Method for calculating contact stiffness between damping ring and gear based on contact simulation

Abstract

The invention discloses a method for calculating the contact rigidity between a damping ring and a gear based on contact simulation, and the method comprises the steps: simplifying the gear into a gear groove in a CAE model, carrying out the contact simulation between the damping ring and the gear groove through the CAE model, and obtaining a contact simulation result; the contact simulation results are screened, screened data corresponding to the damping ring and the gear groove are obtained, and the screened data comprise the contact force and displacement of the degree of freedom in the X direction, the contact force and displacement of the degree of freedom in the Y direction and the contact force and displacement of the degree of freedom in the Z direction; and calculating the contact rigidity between the damping ring and the gear based on the contact force and displacement of the degree of freedom in the X direction, the contact force and displacement of the degree of freedom in the Y direction and the contact force and displacement of the degree of freedom in the Z direction. The calculation accuracy of the contact rigidity between the damping ring and the gear can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of gear transmission, and in particular to a method for calculating contact stiffness between a damping ring and a gear based on contact simulation. Background Art

[0002] The existing methods for calculating the contact stiffness between the damping ring and the gear include: using the Hertz contact theory to calculate the contact stiffness and using the Winkler elastic foundation model to calculate the contact stiffness. Among them, when using the Hertz contact theory to calculate the contact stiffness, two assumptions need to be made: "small contact area" and "ignoring friction on the contact surface", so the large-area contact and friction on the contact interface cannot be considered during the calculation. When using the Winkler elastic foundation model to calculate the contact stiffness, the assumptions of "only the normal spring model exists" and "ignoring the boundary effect" are made, so the tangential contact stiffness on the contact surface and the contact stiffness on the boundary cannot be calculated during the calculation.

[0003] Therefore, the results of calculating the contact stiffness between the damping ring and the gear using the Hertz contact theory and the Winkler elastic foundation model are not accurate enough. Summary of the invention

[0004] The present application aims to propose a method for calculating the contact stiffness between a damping ring and a gear based on contact simulation, which can improve the calculation accuracy of the contact stiffness between the damping ring and the gear.

[0005] In a first aspect, an embodiment of the present application provides a method for calculating the contact stiffness between a damping ring and a gear based on contact simulation, the method comprising:

[0006] Simplifying the gear into a gear groove in the CAE model, performing contact simulation between the damping ring and the gear groove through the CAE model, and obtaining a contact simulation result;

[0007] Screening the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove, respectively, wherein the screened data includes contact force and displacement of the X-direction degree of freedom, contact force and displacement of the Y-direction degree of freedom, and contact force and displacement of the Z-direction degree of freedom;

[0008] The contact stiffness between the damping ring and the gear is calculated based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom.

[0009] Compared with the prior art, the first aspect of the present application has the following beneficial effects:

[0010] This method simplifies the gear into a gear groove in the CAE model, performs contact simulation between the damping ring and the gear groove through the CAE model, and obtains the contact simulation results; the contact simulation results are screened to obtain the screened data corresponding to the damping ring and the gear groove, the screened data includes the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom; based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom, the contact stiffness between the damping ring and the gear is calculated. In this way, by starting from the CAE simulation of the actual model for calculation, it is not only more suitable for the large contact surface of the damping ring and the gear groove, but also the friction force on the contact surface is included in the calculation range, and the contact stiffness on more degrees of freedom is also comprehensively considered, so that the calculation accuracy of the contact stiffness between the damping ring and the gear can be improved.

[0011] In some embodiments, performing contact simulation between the damping ring and the gear groove by using a CAE model to obtain a contact simulation result includes:

[0012] Importing the model of the damping ring and the model of the gear groove into the CAE model;

[0013] Meshing the damping ring and the gear groove to obtain a meshed damping ring and a meshed gear groove;

[0014] The meshed damping ring and the meshed gear groove are assembled, and after assembly, the analysis step, boundary conditions and load for generating contact between the damping ring and the gear groove are set so as to perform contact simulation between the damping ring and the gear groove.

[0015] In some implementations, the screening of the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove, respectively, includes:

[0016] From the contact simulation results, a first result of all nodes on the contact surface corresponding to the damping ring is selected, and a second result of all nodes on the contact surface corresponding to the gear groove is selected;

[0017] Filtering out filtered data corresponding to the damping ring including contact force and displacement from the first result;

[0018] Filter out the filtered data corresponding to the gear groove including contact force and displacement from the second result.

[0019] In some embodiments, the calculating the contact stiffness between the damping ring and the gear based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom includes:

[0020] Obtaining the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring, and obtaining the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the gear groove;

[0021] Based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring, the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated;

[0022] Based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the gear groove, the second contact stiffness of each node on the contact surface corresponding to the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated;

[0023] Calculating the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom according to the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom;

[0024] Calculate the total contact stiffness of the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom according to the second contact stiffness of each node on the contact surface corresponding to the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom;

[0025] The contact stiffness between the damping ring and the gear is calculated according to the total contact stiffness of the damping ring in the X-direction, Y-direction and Z-direction degrees of freedom and the total contact stiffness of the gear slot in the X-direction, Y-direction and Z-direction degrees of freedom.

[0026] In some embodiments, the calculating the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring comprises:

[0027] Calculating the ratio between the contact force and the displacement of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, and obtaining the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom;

[0028] Calculate the ratio between the contact force and the displacement of each node on the contact surface corresponding to the damping ring in the Y-direction degree of freedom, and obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the Y-direction degree of freedom;

[0029] The ratio between the contact force and the displacement of each node on the contact surface corresponding to the damping ring in the Z-direction degree of freedom is calculated to obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the Z-direction degree of freedom.

[0030] In some embodiments, calculating the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom according to the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom includes:

[0031]

[0032] Among them, K p_total represents the total contact stiffness of the damping ring contact surface, k pjx represents the first contact stiffness of the jth node on the contact surface of the damping ring in the X-direction degree of freedom, k pjy represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Y direction, k pjz represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Z direction, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k p_total_z It represents the total contact stiffness of the damping ring in the Z-direction degree of freedom.

[0033] In some embodiments, the calculating the contact stiffness between the damping ring and the gear according to the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom and the total contact stiffness of the gear slot in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom comprises:

[0034]

[0035] Among them, K pg Represents the contact stiffness between the damping ring and the gear, K p_total Represents the total contact stiffness of the damping ring contact surface, Kg_total represents the total contact stiffness of the gear groove contact surface, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k g_total_x represents the total contact stiffness of the gear slot in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k g_total_y represents the total contact stiffness of the gear slot in the Y-direction degree of freedom, k g_total_z represents the total contact stiffness of the gear slot in the Z-direction degree of freedom, k p_total_z represents the total contact stiffness of the damping ring in the Z-direction degree of freedom, k x represents the contact stiffness between the damping ring and the gear in the X-direction degree of freedom, k y represents the contact stiffness between the damping ring and the gear in the Y-direction degree of freedom, k z It represents the contact stiffness between the damping ring and the gear in the Z degree of freedom.

[0036] In a second aspect, an embodiment of the present application further provides a system for calculating the contact stiffness between a damping ring and a gear based on contact simulation, the system comprising:

[0037] A contact simulation unit is used to simplify the gear into a gear groove in the CAE model, perform contact simulation between the damping ring and the gear groove through the CAE model, and obtain a contact simulation result;

[0038] A data screening unit, used for screening the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove, respectively, wherein the screened data includes contact force and displacement of the X-direction degree of freedom, contact force and displacement of the Y-direction degree of freedom, and contact force and displacement of the Z-direction degree of freedom;

[0039] The data calculation unit is used to calculate the contact stiffness between the damping ring and the gear based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom.

[0040] In a third aspect, an embodiment of the present application also provides an electronic device, comprising at least one control processor and a memory for communicating with the at least one control processor; the memory stores instructions executable by the at least one control processor, and the instructions are executed by the at least one control processor so that the at least one control processor can execute a method for calculating the contact stiffness between a damping ring and a gear based on contact simulation as described above.

[0041] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute a method for calculating the contact stiffness between a damping ring and a gear based on contact simulation as described above.

[0042] It can be understood that the beneficial effects of the second to fourth aspects compared with the related art are the same as the beneficial effects of the first aspect compared with the related art. Please refer to the relevant description in the first aspect, and no further details will be given here. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0044] Figure 1 It is a flow chart of an embodiment of a method for calculating the contact stiffness between a damping ring and a gear based on contact simulation provided by the present application;

[0045] Figure 2 It is a schematic diagram of the overall process of the best embodiment of the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation provided by the present application;

[0046] Figure 3 It is a schematic diagram of introducing and meshing the damping ring and gear groove components in the best embodiment of the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation provided by the present application;

[0047] Figure 4 It is a schematic diagram of the assembly of the gear groove and the damping ring in the best embodiment of the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation provided by the present application;

[0048] Figure 5 is a schematic diagram of a gear groove contact surface set in a best embodiment of a method for calculating contact stiffness between a damping ring and a gear based on contact simulation provided by the present application;

[0049] Figure 6 is a schematic diagram of a damping ring contact surface set in a best embodiment of a method for calculating contact stiffness between a damping ring and a gear based on contact simulation provided by the present application;

[0050] Figure 7 It is a schematic diagram of setting output parameters in the best embodiment of the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation provided by the present application;

[0051] Figure 8is a structural schematic diagram of an embodiment of a system for calculating contact stiffness between a damping ring and a gear based on contact simulation provided by the present application;

[0052] Fig. 9 It is a schematic diagram of the structure of an embodiment of the electronic device provided by the present application. DETAILED DESCRIPTION

[0053] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0054] In the description of this application, if there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0055] In the description of the present application, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0056] In the description of this application, it should be noted that, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in this application based on the specific content of the technical solution.

[0057] The existing methods for calculating the contact stiffness between the damping ring and the gear include: using the Hertz contact theory to calculate the contact stiffness and using the Winkler elastic foundation model to calculate the contact stiffness. Among them, when using the Hertz contact theory to calculate the contact stiffness, two assumptions need to be made: "small contact area" and "ignoring friction on the contact surface", so the large-area contact and friction on the contact interface cannot be considered during the calculation. When using the Winkler elastic foundation model to calculate the contact stiffness, the assumptions of "only the normal spring model exists" and "ignoring the boundary effect" are made, so the tangential contact stiffness on the contact surface and the contact stiffness on the boundary cannot be calculated during the calculation.

[0058] Therefore, the results of calculating the contact stiffness between the damping ring and the gear using the Hertz contact theory and the Winkler elastic foundation model are not accurate enough.

[0059] In order to solve the above-mentioned problem that the calculation result of the contact stiffness between the damping ring and the gear is not accurate enough, the present application proposes a method for calculating the contact stiffness between the damping ring and the gear based on contact simulation.

[0060] Reference Figure 1 The embodiment of the present application provides a method for calculating the contact stiffness between a damping ring and a gear based on contact simulation, the method comprising the following steps:

[0061] Step S100, simplifying the gear into a gear groove in the CAE model, performing contact simulation between the damping ring and the gear groove through the CAE model, and obtaining a contact simulation result;

[0062] Step S200, screening the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove, respectively, the screened data including the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom;

[0063] Step S300: Calculate the contact stiffness between the damping ring and the gear based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom.

[0064] In this embodiment, the gear is simplified into a gear groove in the CAE model, and the contact simulation between the damping ring and the gear groove is performed through the CAE model to obtain the contact simulation result; the contact simulation result is screened to obtain the screened data corresponding to the damping ring and the gear groove, and the screened data includes the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom; based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom, the contact stiffness between the damping ring and the gear is calculated. In this way, by starting from the CAE simulation of the actual model for calculation, it is not only more suitable for the large contact surface of the damping ring and the gear groove, but also the friction force on the contact surface is included in the calculation range, and the contact stiffness on more degrees of freedom is also comprehensively considered, so that the calculation accuracy of the contact stiffness between the damping ring and the gear can be improved.

[0065] The above CAE model may refer to Computer Aided Engineering (CAE) in engineering design, which is a technology that uses computer software for engineering analysis and design. CAE includes a series of simulation and analysis tools. The CAE model is an approximate numerical analysis method that uses computers to solve problems such as the analysis and calculation of mechanical properties such as structural strength, stiffness, buckling stability, dynamic response, heat conduction, three-dimensional multi-body contact, and elastic-plasticity of complex engineering and product structures, as well as the optimization design of structural performance.

[0066] The above-mentioned contact simulation results are screened to obtain the screened data corresponding to the damping ring and the gear groove. After the contact simulation between the damping ring and the gear groove is performed through the CAE model, the contact simulation results will include all the output parameter results on all the nodes after the contact simulation, but this embodiment only needs the output parameter results of the nodes on the contact surface of the damping ring and the gear groove. Therefore, by setting the output area and output parameter in the CAE model, the desired screened data corresponding to the damping ring and the gear groove can be obtained.

[0067] The above degrees of freedom are an important concept in finite element analysis. They are used to describe the directions in which nodes in a system or structure can move independently. The degrees of freedom are usually described in three directions: X, Y and Z.

[0068] In some embodiments, performing contact simulation between the damping ring and the gear groove through a CAE model to obtain a contact simulation result includes:

[0069] Import the damping ring model and gear groove model into the CAE model;

[0070] Meshing the damping ring and the gear groove to obtain a meshed damping ring and a meshed gear groove;

[0071] The meshed damping ring and the meshed gear groove are assembled, and after assembly, the analysis step, boundary conditions and loads for generating contact between the damping ring and the gear groove are set so as to perform contact simulation between the damping ring and the gear groove.

[0072] In this embodiment, by setting the analysis step for generating contact between the damping ring and the gear groove, this setting is to output the output parameters set in each analysis step after the calculation is completed. The purpose of setting the boundary conditions is to make the damping ring and the gear groove have contact behavior in all directions. The purpose of setting the load is to generate contact between the damping ring and the gear groove by applying force. This embodiment performs calculations based on CAE simulation of the actual model, which is not only more suitable for the large contact surface of the damping ring and the gear groove, but also includes the friction force on the contact surface into the calculation range, so that the contact stiffness calculated later is more accurate.

[0073] In some implementations, the contact simulation results are screened to obtain screened data corresponding to the damping ring and the gear groove, respectively, including:

[0074] From the contact simulation results, a first result of all nodes on the contact surface corresponding to the damping ring is selected, and a second result of all nodes on the contact surface corresponding to the gear groove is selected;

[0075] Filter out the filtered data corresponding to the damping ring including the contact force and the displacement from the first result;

[0076] Filtered data corresponding to the gear groove including contact force and displacement are filtered out from the second result.

[0077] In this embodiment, the first result of all nodes on the contact surface corresponding to the damping ring is screened out from the contact simulation results, and the second result of all nodes on the contact surface corresponding to the gear slot is screened out; the screened data corresponding to the damping ring including the contact force and displacement is screened out from the first result; and the screened data corresponding to the gear slot including the contact force and displacement is screened out from the second result. In this way, the required data is directly obtained through multiple screening to calculate the contact stiffness, thereby improving the calculation efficiency.

[0078] The above nodes may be finite element nodes, that is, each vertex that makes up an element is called a node, and each individual component in the mesh is called an element.

[0079] In some embodiments, the contact stiffness between the damping ring and the gear is calculated based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom, including:

[0080] Obtain the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring, and obtain the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the gear groove;

[0081] Based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring, the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated;

[0082] Based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the gear groove, the second contact stiffness of each node on the contact surface corresponding to the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated;

[0083] According to the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom, the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom is calculated;

[0084] According to the second contact stiffness of each node on the contact surface corresponding to the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom, the total contact stiffness of the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom is calculated;

[0085] The contact stiffness between the damping ring and the gear is calculated according to the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom and the total contact stiffness of the gear slot in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom.

[0086] In this embodiment, since the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom are obtained, the contact stiffness is calculated by the contact force and displacement of the degrees of freedom in each direction. This embodiment can improve the calculation accuracy of the contact stiffness between the damping ring and the gear by comprehensively considering the contact stiffness on more degrees of freedom and the contact stiffness on the boundary.

[0087] In some embodiments, based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring, the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated, including:

[0088] Calculate the ratio between the contact force and displacement of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, and obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom;

[0089] Calculate the ratio between the contact force and displacement of each node on the contact surface corresponding to the damping ring in the Y-direction degree of freedom, and obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the Y-direction degree of freedom;

[0090] The ratio between the contact force and the displacement of each node on the contact surface corresponding to the damping ring in the Z direction of freedom is calculated to obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the Z direction of freedom.

[0091] In this embodiment, by calculating the contact stiffness of the degrees of freedom in each direction, a good data foundation is laid for the subsequent calculation of the contact stiffness, so that the contact stiffness calculated later is more accurate.

[0092] In some embodiments, according to the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom, the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated, including:

[0093]

[0094] Among them, K p_total represents the total contact stiffness of the damping ring contact surface, k pjx represents the first contact stiffness of the jth node on the contact surface of the damping ring in the X-direction degree of freedom, k pjy represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Y direction, k pjz represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Z direction, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k p_total_z It represents the total contact stiffness of the damping ring in the Z degree of freedom.

[0095] In some embodiments, the contact stiffness between the damping ring and the gear is calculated according to the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom and the total contact stiffness of the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom, including:

[0096]

[0097] Among them, K pg Represents the contact stiffness between the damping ring and the gear, K p_total Represents the total contact stiffness of the damping ring contact surface, K g_total represents the total contact stiffness of the gear groove contact surface, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k g_total_x represents the total contact stiffness of the gear groove in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k g_total_y represents the total contact stiffness of the gear groove in the Y-direction degree of freedom, k g_total_z represents the total contact stiffness of the gear groove in the Z-direction degree of freedom, k p_total_z represents the total contact stiffness of the damping ring in the Z-direction degree of freedom, k x represents the contact stiffness between the damping ring and the gear in the X-direction degree of freedom, k y represents the contact stiffness between the damping ring and the gear in the Y-direction degree of freedom, k z It represents the contact stiffness between the damping ring and the gear in the Z degree of freedom.

[0098] To facilitate understanding by those skilled in the art, a set of best embodiments is provided below:

[0099] In the gear transmission system, the excitation force caused by internal and external factors such as the time-varying meshing stiffness of the gear, meshing impact, gear manufacturing and installation errors, excitation speed and load torque changes will excite the gear vibration. Gear vibration and vibration noise will reduce the service life and transmission efficiency of the gear, so researchers have tried various methods to reduce the vibration noise of the gear. Currently, a variety of vibration reduction and noise reduction technologies have been used to reduce the vibration noise of the gear transmission system, including active vibration reduction and passive vibration reduction methods. Active vibration reduction methods include piezoelectric actuators and magnetic bearings, and passive vibration reduction methods include damping rings, gear shaping, and gear parameter optimization.

[0100] Among the various vibration and noise reduction measures of the gear system, the damping ring has the characteristics of simple structure, obvious vibration reduction effect and good economy. Through the relative friction movement on the contact interface between the damping ring and the gear, the vibration energy of the gear is dissipated, and the vibration amplitude and stress are reduced. In order to explore the vibration reduction effect of the damping ring, a dynamic model of the overall system of the damping ring and the gear is often constructed, and the response results of the dynamic model are used to evaluate the vibration reduction effect of the damping ring. When constructing the system-level dynamic model of the two, there are two very important parameters to describe the coupling relationship between the damping ring and the gear, namely contact stiffness and friction torque. Among them, the contact stiffness has a greater influence on the vibration reduction effect of the damping ring. At the same time, because the calculation of friction torque has formed a relatively mature system in the industry, this embodiment focuses on the calculation of contact stiffness.

[0101] Contact stiffness is a parameter used in mechanical engineering and materials science to describe the interaction characteristics between two objects when they are in contact. Specifically, it quantifies the relationship between force and displacement at the contact interface of two objects. When the surfaces of two objects are in contact under the action of an external force, the contact stiffness describes how much force needs to be applied to produce a certain displacement at the contact interface. Contact stiffness is a crucial parameter in the process of building a dynamic model. It is a necessary parameter for predicting the response characteristics of the system under vibration, impact or periodic loads. Therefore, it directly affects the dynamic response, stability and overall performance of the dynamic system, and thus is related to the accuracy and reliability of the dynamic model.

[0102] Currently, there are the following methods to calculate the contact stiffness between the damping ring and the gear (i.e., the gear groove):

[0103] 1. Use Hertz contact theory to calculate contact stiffness.

[0104] Hertz contact theory is a classical mechanical theory used to analyze contact problems between two contacting objects, such as stress distribution and deformation. The theory is particularly suitable for analyzing elastic contact of curved surfaces in a relatively small contact area. Hertz contact theory is used in many engineering applications to calculate contact stiffness, which refers to the ratio of the reaction force generated by deformation during contact to the amount of deformation. However, when using Hertz contact theory to calculate the contact stiffness between the damping ring and the gear groove, there are the following defects:

[0105] (1) Hertz contact theory assumes that the deformation caused by contact is a small elastic deformation, which means that if significant plastic deformation occurs in the contact area or the material enters a yield state, Hertz theory will no longer apply. However, the contact between the damping ring and the gear groove has large deformation at the initial stage of installation.

[0106] (2) Hertz contact theory usually assumes that there is no friction between the contact surfaces. This assumption is unrealistic between the damping ring and the gear groove, as friction will significantly affect the contact characteristics such as the contact area and pressure distribution between the damping ring and the gear groove.

[0107] (3) The Hertz contact theory assumes that the contact area is very small relative to the overall structural size. However, the contact surface between the damping ring and the gear groove is the outer surface of the entire damping ring. Therefore, the Hertz contact theory is inconsistent with the contact state between the damping ring and the gear groove.

[0108] 2. Use the Winkler elastic foundation model to calculate the contact stiffness.

[0109] The Winkler Model is a classic elastic foundation model used to analyze the behavior of geotechnical and mechanical structure foundations. The Winkler Model is widely used in mechanical engineering and civil engineering to help understand and predict the deformation and response of related structures. The Winkler Model simplifies the contact parts into a series of independent springs that do not affect each other along the depth direction. In this model, each point in the contact body can be represented by an independent spring, and there is no lateral interaction between them. Specifically, the Winkler elastic foundation model can be well applied to contact pressure calculation and wear simulation of contact problems. However, when using the Winkler elastic foundation model to calculate the contact stiffness between the damping ring and the gear groove, there are the following defects:

[0110] (1) Independent spring assumption: The Winkler model assumes that the gear slot is composed of a series of independent springs, without considering the continuity and interaction of the gear slot. This limits the ability of the gear slot model in terms of lateral effects and shear stress transmission, and also leads to inaccurate calculation results.

[0111] (2) Linear elastic assumption: The Winkler model assumes that the behavior between the damping ring and the gear groove is linear, but in reality the contact between the damping ring and the gear groove usually exhibits significant nonlinearity and hysteresis effects rather than complete linear elasticity.

[0112] (3) Boundary effect: The Winkler model ignores the contact boundary effect. However, stress concentration often occurs in the edge contact area between the damping ring and the gear groove, which is contrary to the boundary effect assumption of the Winkler model.

[0113] Based on the above theory, the problems of using Hertz contact theory to calculate contact stiffness and using Winkler elastic foundation model to calculate contact stiffness are as follows:

[0114] (1) When Hertz contact theory is used to calculate the contact stiffness between the damping ring and the gear, it is often found that the calculated results at higher speeds are quite different from the actual experimental results. This is because the application of Hertz contact theory requires the assumption that the deformation between the damping ring and the gear is a small elastic deformation, there is no friction between the contact surfaces, and the contact surface is very small relative to the overall structural size. This is inconsistent with the actual contact state between the damping ring and the gear groove.

[0115] (2) When using the Winkler elastic foundation model to calculate the contact stiffness between the damping ring and the gear, it is often found that the tangential component of the calculated contact stiffness has a large error, and the calculated results are quite different from the actual experimental results. This is because the Winkler model needs to assume that the gear slot is composed of a series of independent springs, ignoring the tangential continuity of the wheel slot. In addition, it is assumed that the contact between the damping ring and the gear slot is completely linear elastic and ignores the more important edge contact phenomenon in the contact between the two. Therefore, the accuracy of the Winkler model in calculating the contact stiffness between the damping ring and the gear slot is not high.

[0116] Based on the above-mentioned problems in calculating the contact stiffness using the Hertz contact theory and the Winkler elastic foundation model, the method of this embodiment is based on the idea of ​​large contact area adaptability of the Winkler model and small contact area solution of the Hertz contact theory. The CAE simulation model is used to calculate the contact stiffness between all simulation nodes on the entire contact surface between the damping ring and the gear groove (using nodes to divide the large contact area can be understood as discretizing the large contact area into small contact areas), and the contact stiffness between the damping ring and the gear groove is solved by the sum of the contact stiffness in all degrees of freedom directions on all nodes.

[0117] Compared with the Hertz contact theory, the method of this embodiment is not only more suitable for the large contact surface of the damping ring and the gear groove (the Hertz contact theory is only suitable for small contact areas), but also includes the friction force on the contact surface into the calculation range (the Hertz contact theory ignores the friction force). Therefore, the stiffness calculated by the method of this embodiment is more accurate than that calculated by the Hertz contact theory; compared with the Winkler elastic basic model, the method of this embodiment considers the contact stiffness on more degrees of freedom (the Winkler model only has a normal spring model), and considers the contact stiffness on the boundary (the Winkler model ignores the boundary effect). Therefore, the contact stiffness calculated by this method is more accurate than that calculated by the Winkler elastic basic model.

[0118] This embodiment realizes the accurate solution of the contact stiffness between the damping ring installed on the gear and the gear groove, and solves the problem that the Hertz contact theory currently used to solve the contact stiffness between the two ignores friction and is not suitable for large-area contact, and the problem that the Winkler elastic basis model ignores the tangential stiffness of the contact surface and the contact stiffness on the boundary.

[0119] Since the method of this embodiment combines the large contact area adaptability of the Winkler model and the idea of ​​solving the small contact area of ​​the Hertz contact theory, CAE is used to simulate the state of the damping ring and the gear after installation, and then the contact stiffness between all finite element simulation nodes on the entire contact surface between the damping ring and the gear groove is calculated (the large contact area is divided by nodes, which can be understood as discretizing the large contact area into small contact areas). The contact stiffness between the damping ring and the gear groove is solved by the sum of the contact stiffness in all degrees of freedom directions on all nodes, so the accuracy of the contact stiffness calculation is finally improved. The specific implementation of the method of this embodiment can be roughly divided into three parts, such as Figure 2 As shown in the figure, it includes three parts: pre-processing (establishment of CAE simulation model), data export and post-processing. Specifically:

[0120] 1. The pre-processing part mainly completes the simulation process between the damping ring and the gear. For the convenience of explanation, the gear is simplified into a slot in this embodiment. This simplification does not affect the scheme of the method in this embodiment. The purpose of the pre-processing CAE model is to obtain the simulation result of the contact between the damping ring and the gear slot. The specific process of the pre-processing CAE part includes:

[0121] (1) Import the gear groove and damping ring model and divide the mesh. For the convenience of explanation, the gear model is simplified to a groove. Figure 3 , Figure 3 a in the figure represents the import and meshing of gear groove components. Figure 3 b in the figure represents the import and meshing of the damping ring component.

[0122] (2) Assign component properties to both the gear groove and the damping ring and assemble them, see Figure 4 .

[0123] (3) Setting the analysis step for generating contact between the gear groove and the damping ring. This setting is to output the output parameters set in each analysis step after the calculation is completed. The setting of these parameters can be changed in the CAE simulation model according to the actual needs of the user, and this embodiment does not impose specific restrictions.

[0124] (4) Boundary condition setting: At this time, it can be seen that the contact properties of the gear groove and the damping ring in the normal and tangent directions of the contact surface are set. The purpose of this setting is to make the damping ring and the gear groove have contact behavior in all directions. The setting of boundary conditions can be changed in the CAE simulation model according to the actual needs of the user, and this embodiment does not make any specific restrictions.

[0125] (5) Load setting. The purpose of this setting is to make contact between the damping ring and the gear groove by applying force. The load setting can be changed in the CAE simulation model according to the actual needs of the user, and this embodiment does not make any specific restrictions.

[0126] The CAE simulation model is running. After the above parameters are set, the calculation of the damping ring and gear groove contact model can be completed in the CAE model.

[0127] 2. The purpose of the data export part is to output the required parameters on the required nodes in the required area of ​​the calculation results. If the calculation results of the entire model are directly output without processing, then all output parameter results on all nodes of the model will be obtained. It will be difficult to correctly screen out the required parameters. Therefore, this embodiment requires relevant operations in the data export part to output the required parameters.

[0128] (1) Set the output area. At this time, this embodiment only needs all the node results on the contact surface of the damping ring and the gear groove, so the contact surface needs to set the contact surface set of the damping ring and the gear groove respectively. The subsequent output objects are two sets, that is, only the node results on the contact surface can be output, see Figure 5 and Figure 6 .

[0129] (2) Set the output parameters. In fact, the results stored in each node are the results of multiple parameters, so it is necessary not only to filter out the area to be output (i.e., the contact surface set), but also to filter out the parameters to be output (i.e., including contact force and displacement).

[0130] Reference Figure 7, the explanation of the specific parameters in the figure is: CNORMF means the contact force (i.e. contact force) of all nodes on the contact surface, where CNORMF1 refers to the contact force of the node in the X-direction degree of freedom; CNORMF2 refers to the contact force of the node in the Y-direction degree of freedom; CNORMF3 refers to the contact force of the node in the Z-direction degree of freedom. U means the displacement of the node, U1 refers to the displacement of the node in the X-direction degree of freedom, U2 refers to the displacement of the node in the Y-direction degree of freedom, and U3 refers to the displacement of the node in the Z-direction degree of freedom.

[0131] 3. The post-processing part is a method to finally calculate the contact stiffness between the damping ring and the gear groove based on the data derived in step 2. The specific technical solution is as follows:

[0132] The data derived from the CAE model can be processed to obtain four matrices, CNORMF and U, on the contact surface set of the damping ring and the gear groove. The four matrices are as follows:

[0133]

[0134]

[0135]

[0136]

[0137] In the above formula, U i represents the displacement of all nodes on the contact surface, F i Represents the contact force set of all nodes on the contact surface, u ijk represents the displacement of the k-direction degree of freedom at node j on component i, f ijk Represents the contact force on the k-direction degree of freedom at node j on component i, where subscript i = (p, g), p represents the damping ring, g represents the gear, i.e., the gear groove, subscript j = (1, 2, 3, ..., n or m), j represents the node number, where n represents the total number of nodes on the damping ring contact surface, and m represents the total number of nodes on the gear contact surface; subscript k = (x, y, z), where x represents the X-direction degree of freedom, y represents the Y-direction degree of freedom, and z represents the Z-direction degree of freedom.

[0138] Each node has a contact stiffness in each of the three directions of freedom. The calculation formula for the contact stiffness corresponding to each direction of freedom of each node is as follows:

[0139]

[0140] Among them, K is the contact stiffness of the node in a certain direction, F is the force on the node in that direction (i.e., contact force), and U is the displacement of the node in that direction.

[0141] According to the contact stiffness calculation formula corresponding to each degree of freedom in each direction of each node, the contact stiffness of each node in each direction of the contact surface of the damping ring and the contact surface of the gear can be obtained as follows:

[0142]

[0143]

[0144] In the above formula, K i represents the contact stiffness set of all nodes in all directions of freedom on the contact surface of component i, k ijk It represents the displacement and contact force in the k-direction degree of freedom at node j on component i, where subscript i = (p, g), p represents the damping ring, g represents the gear; subscript j = (1, 2, 3, ..., n or m), j represents the node number, n represents the total number of nodes on the damping ring contact surface, and m represents the total number of nodes on the gear contact surface; subscript k = (x, y, z), where x represents the X-direction degree of freedom, y represents the Y-direction degree of freedom, and z represents the Z-direction degree of freedom.

[0145] The contact stiffness matrix K of each node on the contact surface between the damping ring and the gear in each degree of freedom direction is obtained by solving g K p After that, the total contact stiffness of the damping ring and the gear can be solved:

[0146]

[0147]

[0148] In the above formula, K p_total represents the total contact stiffness of the damping ring contact surface, k pjx represents the first contact stiffness of the jth node on the contact surface of the damping ring in the X-direction degree of freedom, k pjy represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Y direction, k pjz represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Z direction, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k p_total_z The total contact stiffness of the damping ring in the Z-direction degree of freedom, K g_total represents the total contact stiffness of the gear groove contact surface, k g_total_x represents the total contact stiffness of the gear groove in the X-direction degree of freedom, k g_total_y represents the total contact stiffness of the gear groove in the Y-direction degree of freedom, k g_total_zrepresents the total contact stiffness of the gear groove in the Z-direction degree of freedom, k gjx represents the first contact stiffness of the jth node on the gear groove contact surface in the X-direction degree of freedom, k gjy represents the first contact stiffness of the jth node on the gear groove contact surface in the Y direction, k gjz It represents the first contact stiffness of the jth node on the gear groove contact surface in the Z direction degree of freedom.

[0149] The overall contact stiffness K of the damping ring and the gear is obtained by solving p_total and K g_total Then, K p_total With K g_total The sum is the total contact stiffness between the damping ring and the gear:

[0150]

[0151] In the above formula, K pg Represents the contact stiffness between the damping ring and the gear, K p_total Represents the total contact stiffness of the damping ring contact surface, K g_total represents the total contact stiffness of the gear groove contact surface, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k g_total_x represents the total contact stiffness of the gear groove in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k g_total_y represents the total contact stiffness of the gear groove in the Y-direction degree of freedom, k g_total_z represents the total contact stiffness of the gear groove in the Z-direction degree of freedom, k p_total_z represents the total contact stiffness of the damping ring in the Z-direction degree of freedom, k x represents the contact stiffness between the damping ring and the gear in the X-direction degree of freedom, k y represents the contact stiffness between the damping ring and the gear in the Y-direction degree of freedom, k z It represents the contact stiffness between the damping ring and the gear in the Z degree of freedom.

[0152] After the above process, the contact stiffness K between the damping ring and the gear can be solved. pg .

[0153] Differences from the prior art:

[0154] 1. Compared with Hertz contact theory: Hertz contact theory is only suitable for small contact areas in calculation, and also ignores friction. This method is calculated based on CAE simulation of the actual model. It is not only more suitable for the large contact surface of the damping ring and the gear groove, but also includes the friction on the contact surface into the calculation range. Therefore, the stiffness calculated by this method is more accurate than that by Hertz contact theory.

[0155] 2. Compared with the Winkler elastic foundation model: The Winkler model only has a normal spring model and ignores the boundary effect. This method considers the contact stiffness on more degrees of freedom and the contact stiffness on the boundary. Therefore, the contact stiffness calculated by this method is more accurate than that calculated by the Winkler elastic foundation model.

[0156] Reference Figure 8 The embodiment of the present application further provides a system for calculating the contact stiffness between a damping ring and a gear based on contact simulation, the system comprising a contact simulation unit 100, a data screening unit 200 and a data calculation unit 300, wherein:

[0157] The contact simulation unit 100 is used to simplify the gear into a gear groove in the CAE model, perform contact simulation between the damping ring and the gear groove through the CAE model, and obtain a contact simulation result;

[0158] A data screening unit 200 is used to screen the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove, respectively, wherein the screened data includes the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom;

[0159] The data calculation unit 300 is used to calculate the contact stiffness between the damping ring and the gear based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom.

[0160] It should be noted that since the system for calculating the contact stiffness between the damping ring and the gear based on contact simulation in this embodiment and the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation mentioned above are based on the same inventive concept, the corresponding contents in the method embodiment are also applicable to the system embodiment and will not be described in detail here.

[0161] Reference Fig. 9 The present application also provides an electronic device, which includes:

[0162] at least one memory;

[0163] at least one processor;

[0164] at least one program;

[0165] The programs are stored in the memory, and the processor executes at least one program to implement the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation according to the present disclosure.

[0166] The electronic device may be any intelligent terminal including a mobile phone, a tablet computer, a personal digital assistant (PDA), a vehicle-mounted computer, etc.

[0167] The electronic device according to the embodiment of the present application is described in detail below.

[0168] The processor 1600 may be implemented by a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present disclosure;

[0169] The memory 1700 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1700 can store an operating system and other application programs. When the technical solution provided in the embodiments of this specification is implemented by software or firmware, the relevant program code is stored in the memory 1700, and the processor 1600 calls and executes the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation in the embodiment of the present disclosure.

[0170] Input / output interface 1800, used to implement information input and output;

[0171] The communication interface 1900 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WIFI, Bluetooth, etc.);

[0172] Bus 2000 , which transmits information between various components of the device (e.g., processor 1600 , memory 1700 , input / output interface 1800 , and communication interface 1900 );

[0173] The processor 1600 , the memory 1700 , the input / output interface 1800 , and the communication interface 1900 are connected to each other in communication within the device via the bus 2000 .

[0174] The embodiment of the present disclosure also provides a storage medium, which is a computer-readable storage medium, and the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the above-mentioned method for calculating the contact stiffness between the damping ring and the gear based on contact simulation.

[0175] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0176] The embodiments described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0177] Those skilled in the art will appreciate that the technical solutions shown in the figures do not limit the embodiments of the present disclosure and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0178] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0179] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0180] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0181] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0182] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0183] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0184] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0185] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable an electronic device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store programs. The above is a detailed description of the embodiments of the present application in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in the relevant technical field, various changes can be made without departing from the purpose of the present application.

Claims

1. A method for calculating the contact stiffness between a damping ring and a gear based on contact simulation, characterized in that: The method comprises: Simplifying the gear into a gear groove in the CAE model, performing contact simulation between the damping ring and the gear groove through the CAE model, and obtaining a contact simulation result; Screening the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove, respectively, wherein the screened data includes contact force and displacement of the X-direction degree of freedom, contact force and displacement of the Y-direction degree of freedom, and contact force and displacement of the Z-direction degree of freedom; The contact stiffness between the damping ring and the gear is calculated based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom.

2. The method for calculating the contact stiffness between the damping ring and the gear based on contact simulation according to claim 1, characterized in that: The contact simulation between the damping ring and the gear groove is performed by using a CAE model to obtain a contact simulation result, including: Importing the model of the damping ring and the model of the gear groove into the CAE model; Meshing the damping ring and the gear groove to obtain a meshed damping ring and a meshed gear groove; The meshed damping ring and the meshed gear groove are assembled, and after assembly, the analysis step, boundary conditions and load for generating contact between the damping ring and the gear groove are set so as to perform contact simulation between the damping ring and the gear groove.

3. The method for calculating the contact stiffness between the damping ring and the gear based on contact simulation according to claim 1 is characterized in that: The step of screening the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove includes: From the contact simulation results, a first result of all nodes on the contact surface corresponding to the damping ring is selected, and a second result of all nodes on the contact surface corresponding to the gear groove is selected; Filtering out filtered data corresponding to the damping ring including contact force and displacement from the first result; Filter out the filtered data corresponding to the gear groove including contact force and displacement from the second result.

4. The method for calculating the contact stiffness between the damping ring and the gear based on contact simulation according to claim 1, characterized in that: The calculating the contact stiffness between the damping ring and the gear based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom includes: Obtaining the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring, and obtaining the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the gear groove; Based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring, the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated; Based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the gear groove, the second contact stiffness of each node on the contact surface corresponding to the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom is calculated; Calculating the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom according to the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom; Calculate the total contact stiffness of the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom according to the second contact stiffness of each node on the contact surface corresponding to the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom; The contact stiffness between the damping ring and the gear is calculated according to the total contact stiffness of the damping ring in the X-direction, Y-direction and Z-direction degrees of freedom and the total contact stiffness of the gear slot in the X-direction, Y-direction and Z-direction degrees of freedom.

5. The method for calculating the contact stiffness between the damping ring and the gear based on contact simulation according to claim 4, characterized in that: The step of calculating the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom of all nodes on the contact surface corresponding to the damping ring comprises: Calculating the ratio between the contact force and the displacement of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, and obtaining the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom; Calculate the ratio between the contact force and the displacement of each node on the contact surface corresponding to the damping ring in the Y-direction degree of freedom, and obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the Y-direction degree of freedom; The ratio between the contact force and the displacement of each node on the contact surface corresponding to the damping ring in the Z-direction degree of freedom is calculated to obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the Z-direction degree of freedom.

6. The method for calculating the contact stiffness between the damping ring and the gear based on contact simulation according to claim 4, characterized in that: The calculating the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom according to the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom comprises: Among them, K p_total represents the total contact stiffness of the damping ring contact surface, k pjx represents the first contact stiffness of the jth node on the contact surface of the damping ring in the X-direction degree of freedom, k pjy represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Y direction, k pjz represents the first contact stiffness of the jth node on the contact surface of the damping ring in the Z direction, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k p_total_z It represents the total contact stiffness of the damping ring in the Z-direction degree of freedom.

7. The method for calculating the contact stiffness between the damping ring and the gear based on contact simulation according to claim 4, characterized in that: The calculating the contact stiffness between the damping ring and the gear according to the total contact stiffness of the damping ring in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom and the total contact stiffness of the gear groove in the X-direction degree of freedom, the Y-direction degree of freedom and the Z-direction degree of freedom comprises: Among them, K pg Represents the contact stiffness between the damping ring and the gear, K p_total Represents the total contact stiffness of the damping ring contact surface, K g_total represents the total contact stiffness of the gear groove contact surface, k p_total_x represents the total contact stiffness of the damping ring in the X-direction degree of freedom, k g_total_x represents the total contact stiffness of the gear slot in the X-direction degree of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, k g_total_y represents the total contact stiffness of the gear slot in the Y-direction degree of freedom, k g_total_z represents the total contact stiffness of the gear slot in the Z-direction degree of freedom, k p_total_z represents the total contact stiffness of the damping ring in the Z-direction degree of freedom, k x represents the contact stiffness between the damping ring and the gear in the X-direction degree of freedom, k y represents the contact stiffness between the damping ring and the gear in the Y-direction degree of freedom, k z It represents the contact stiffness between the damping ring and the gear in the Z degree of freedom.

8. A calculation system for contact stiffness between a damping ring and a gear based on contact simulation, characterized in that: The system comprises: A contact simulation unit is used to simplify the gear into a gear groove in the CAE model, perform contact simulation between the damping ring and the gear groove through the CAE model, and obtain a contact simulation result; A data screening unit, used for screening the contact simulation results to obtain screened data corresponding to the damping ring and the gear groove, respectively, wherein the screened data includes contact force and displacement of the X-direction degree of freedom, contact force and displacement of the Y-direction degree of freedom, and contact force and displacement of the Z-direction degree of freedom; The data calculation unit is used to calculate the contact stiffness between the damping ring and the gear based on the contact force and displacement of the X-direction degree of freedom, the contact force and displacement of the Y-direction degree of freedom, and the contact force and displacement of the Z-direction degree of freedom.

9. An electronic device, characterized in that: It includes at least one control processor and a memory for communicating with the at least one control processor; the memory stores instructions that can be executed by the at least one control processor, and the instructions are executed by the at least one control processor so that the at least one control processor can execute the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the method for calculating the contact stiffness between a damping ring and a gear based on contact simulation as described in any one of claims 1 to 7.

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