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

Abstract

The application discloses a calculation method of contact stiffness between a damping ring and a gear based on contact simulation, and the method comprises the following steps: simplifying the gear into a gear groove in a 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 result to obtain screened data corresponding to the damping ring and the gear groove respectively, wherein the screened data comprises contact force and displacement in X-direction freedom, contact force and displacement in Y-direction freedom and contact force and displacement in Z-direction freedom; and calculating the contact stiffness between the damping ring and the gear based on the contact force and displacement in X-direction freedom, the contact force and displacement in Y-direction freedom and the contact force and displacement in Z-direction freedom. The application can improve the calculation accuracy of the contact stiffness between the damping ring and the gear.

Description

Technical Field

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

[0002] Existing methods for calculating the contact stiffness between the damping ring and the gear include: using Hertz contact theory and using the Winkler elastic foundation model. The Hertz contact theory requires the assumptions of a small contact area and negligible friction on the contact surface, making it impossible to account for large-area contact and friction on the contact interface. The Winkler elastic foundation model assumes only a normal spring model and negligible boundary effects, making it impossible to calculate the tangential contact stiffness on the contact surface or the contact stiffness at the boundary.

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

[0004] This 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 a CAE model, performing contact simulation between the damping ring and the gear groove using the CAE model, and obtaining a contact simulation result;

[0007] Filtering the contact simulation results to obtain filtered data corresponding to the damping ring and the gear groove, respectively, the filtered data including 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 slot in a CAE model and performs contact simulation between the damping ring and the gear slot using the CAE model to obtain contact simulation results. The contact simulation results are then filtered to obtain filtered data corresponding to the damping ring and gear slot, including the contact force and displacement for the X, Y, and Z degrees of freedom. The contact stiffness between the damping ring and the gear is calculated based on these X, Y, and Z degrees of freedom. This method, based on CAE simulation of the actual model, is not only more suitable for the large contact surface between the damping ring and the gear slot, but also incorporates friction on the contact surface and comprehensively considers contact stiffness across more degrees of freedom. This improves the accuracy of the contact stiffness calculation between the damping ring and the gear.

[0011] In some embodiments, performing contact simulation between the damping ring and the gear groove 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 slot are assembled, and after assembly, analysis steps, boundary conditions, and loads for generating contact between the damping ring and the gear slot are set to perform contact simulation between the damping ring and the gear slot.

[0015] In some embodiments, screening 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] Filtered data corresponding to the gear groove including contact force and displacement is selected from the second result.

[0019] In some embodiments, 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 slot;

[0021] Calculate 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;

[0022] Calculate 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 based on the contact force and displacement of all nodes on the contact surface corresponding to the gear groove;

[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 based on 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 slot in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom based on the second contact stiffness of each node on the contact surface corresponding to the gear slot 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 based on 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, 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 includes:

[0027] calculating a ratio between the contact force and the displacement of each node on the corresponding contact surface of the damping ring in the X direction of freedom, to obtain a first contact stiffness of each node on the corresponding contact surface of the damping ring in the X direction of freedom;

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

[0029] calculating a ratio between the contact force and the displacement of each node on the corresponding contact surface of the damping ring in the Z direction of freedom, to obtain a first contact stiffness of each node on the corresponding contact surface of the damping ring in the Z direction of freedom.

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

[0031]

[0032] wherein 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 damping ring contact surface in the X direction of freedom, k pjy represents the first contact stiffness of the jth node on the damping ring contact surface in the Y direction of freedom, k pjz represents the first contact stiffness of the jth node on the damping ring contact surface in the Z direction of freedom, k p_total_x represents the total contact stiffness of the damping ring in the X direction of freedom, k p_total_y represents the total contact stiffness of the damping ring in the Y direction of freedom, k p_total_z represents the total contact stiffness of the damping ring in the Z direction of freedom.

[0033] 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 of freedom, the Y direction of freedom and the Z direction of freedom, and the total contact stiffness of the gear slot in the X direction of freedom, the Y direction of freedom and the Z direction of freedom, comprising:

[0034]

[0035] wherein 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 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 k represents the contact stiffness between the damping ring and the gear in the X-direction degree of freedom, y k represents the contact stiffness between the damping ring and the gear in the Y-direction degree of freedom, z 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 a 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, configured 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 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 further 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 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 above-mentioned method for calculating the contact stiffness between the damping ring and the gear based on contact simulation.

[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 above-mentioned second to fourth aspects compared with the relevant technologies are the same as the beneficial effects of the above-mentioned first aspect compared with the relevant technologies. Please refer to the relevant description in the above-mentioned first aspect and will not be repeated 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 This 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 This 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 This is a schematic diagram of the introduction and meshing of 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 this application;

[0047] Figure 4 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 preferred 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 set of contact surfaces of a damping ring in a preferred 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 This is a schematic diagram of setting output parameters in a preferred embodiment of a method for calculating contact stiffness between a damping ring and a gear based on contact simulation provided by the present application;

[0051] Figure 81 is a schematic structural 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] Figure 9 It is a structural diagram of an embodiment of the electronic device provided by this application. DETAILED DESCRIPTION

[0053] The following describes in detail embodiments of the present application. 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 are not to be construed 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 this application, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0056] In the description of this application, it should be noted that, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technical personnel 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] Existing methods for calculating the contact stiffness between the damping ring and the gear include: using Hertz contact theory and using the Winkler elastic foundation model. The Hertz contact theory requires the assumptions of a small contact area and negligible friction on the contact surface, making it impossible to account for large-area contact and friction on the contact interface. The Winkler elastic foundation model assumes only a normal spring model and negligible boundary effects, making it impossible to calculate the tangential contact stiffness on the contact surface or the contact stiffness at the boundary.

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

[0059] In order to solve the above-mentioned problem that the calculation results of the contact stiffness between the damping ring and the gear are 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 , 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 the following steps:

[0061] Step S100: simplifying the gear into a gear groove in a 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: Filter the contact simulation results to obtain filtered data corresponding to the damping ring and the gear groove, respectively. The filtered 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.

[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 slot in a CAE model, and contact simulation between the damping ring and the gear slot is performed using the CAE model to obtain contact simulation results. The contact simulation results are then filtered to obtain filtered data corresponding to the damping ring and the gear slot, including the contact force and displacement for the X-, Y-, and Z-degrees of freedom. The contact stiffness between the damping ring and the gear is calculated based on the contact force and displacement for the X-, Y-, and Z-degrees of freedom. This calculation, based on CAE simulation of the actual model, is not only more suitable for the large contact surface between the damping ring and the gear slot, but also incorporates friction on the contact surface into the calculation. Furthermore, the contact stiffness for more degrees of freedom is comprehensively considered, thereby improving the accuracy of the contact stiffness calculation between the damping ring and the gear.

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

[0066] The above filtering of the contact simulation results yields filtered data corresponding to the damping ring and gear slot. Since the contact simulation between the damping ring and gear slot performed via the CAE model includes all output parameter results for all nodes after the contact simulation, this embodiment only requires the output parameter results for nodes on the contact surface between the damping ring and gear slot. Therefore, by configuring the output region and output parameters in the CAE model, the desired filtered data corresponding to the damping ring and gear slot 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 terms of the X, Y and Z directions.

[0068] In some embodiments, performing contact simulation between the damping ring and the gear groove using a CAE model to obtain contact simulation results 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 slot are assembled, and after assembly, the analysis steps, boundary conditions, and loads for generating contact between the damping ring and the gear slot are set to perform contact simulation between the damping ring and the gear slot.

[0072] In this embodiment, an analysis step is set to generate 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. It is not only more suitable for the large contact surface between the damping ring and the gear groove, but also includes the friction force on the contact surface in the calculation range, making the contact stiffness calculated later more accurate.

[0073] In some embodiments, 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] Filtering the filtered data corresponding to the damping ring including the contact force and displacement from the first result;

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

[0077] In this embodiment, the contact simulation results are filtered for all nodes on the contact surface corresponding to the damping ring, and for all nodes on the contact surface corresponding to the gear slot. The first result is then filtered for the filtered data corresponding to the damping ring, including contact force and displacement; and the second result is filtered for the filtered data corresponding to the gear slot, including contact force and displacement. This multiple filtering process directly obtains the required data for contact stiffness calculation, improving computational efficiency.

[0078] The above nodes can 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, 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:

[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 slot;

[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 are 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 are calculated;

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

[0085] According to the total contact stiffness of the damping ring in the X direction freedom, the Y direction freedom and the Z direction freedom and the total contact stiffness of the gear groove in the X direction freedom, the Y direction freedom and the Z direction freedom, the contact stiffness between the damping ring and the gear is calculated.

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

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

[0088] The ratio between the contact force and displacement of each node on the corresponding contact surface of the damping ring in the X direction freedom is calculated to obtain the first contact stiffness of each node on the corresponding contact surface of the damping ring in the X direction freedom;

[0089] The ratio between the contact force and displacement of each node on the corresponding contact surface of the damping ring in the Y direction freedom is calculated to obtain the first contact stiffness of each node on the corresponding contact surface of the damping ring in the Y direction freedom;

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

[0091] In the embodiment, the contact stiffness in each direction freedom is calculated to lay a good data foundation for later calculation of contact stiffness, so that the later calculated contact stiffness is more accurate.

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

[0093]

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

[0095] In some embodiments, the contact stiffness between the damping ring and the gear is calculated based on 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, including:

[0096]

[0097] Among them, K pg Indicates 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 k represents the total contact stiffness of the gear groove in the X-direction degree of freedom, p_total_y k represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, g_total_y k represents the total contact stiffness of the gear groove in the Y-direction degree of freedom, g_total_z k represents the total contact stiffness of the gear groove in the Z-direction degree of freedom, p_total_z k represents the total contact stiffness of the damping ring in the Z-direction degree of freedom, x k represents the contact stiffness between the damping ring and the gear in the X-direction degree of freedom, y k represents the contact stiffness between the damping ring and the gear in the Y-direction degree of freedom, z 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 gear transmission systems, excitation forces caused by internal and external factors such as time-varying mesh stiffness, meshing shock, gear manufacturing and installation errors, excitation speed, and load torque variations can all induce gear vibration. Gear vibration and vibration noise can reduce gear life and transmission efficiency, leading researchers to explore various methods to reduce gear vibration noise. Currently, a variety of vibration and noise reduction technologies are being used to reduce the vibration noise of gear transmission systems. These include active and passive vibration reduction methods. Active methods include piezoelectric actuators and magnetic bearings, while passive 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 quality of 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 impact 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 in contact. Specifically, it quantifies the relationship between force and displacement at the contact interface between two objects. When the surfaces of two objects come into contact under the action of an external force, the contact stiffness describes the amount of force required to produce a certain displacement at the contact interface. Contact stiffness is a crucial parameter in the construction of dynamic models. It is an essential parameter for predicting the response characteristics of a system under vibration, shock, or cyclic loads. Therefore, it directly affects the dynamic response, stability, and overall performance of the dynamic system, and thus affects 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 mechanics theory used to analyze the contact problem between two contacting objects, such as stress distribution and deformation. This theory is particularly suitable for analyzing the elastic contact of curved surfaces within 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 opposing force to the deformation that occurs during contact. However, there are some limitations when using Hertz contact theory to calculate the contact stiffness between a damper ring and a gear slot:

[0105] (1) Hertz contact theory assumes that the deformation caused by contact is small elastic deformation, which means that if significant plastic deformation or material enters the yield state occurs in the contact area, Hertz theory will no longer be applicable, but there is large deformation between the damper ring and the gear slot 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 not realistic between the damper ring and the gear slot, as friction can significantly dampen the contact area and pressure distribution between the damper ring and the gear slot.

[0107] (3) Hertz contact theory assumes that the contact area is very small relative to the overall structure size, but the contact surface between the damper ring and the gear slot is the outer surface of the entire damper ring, so Hertz contact theory does not match the contact state of the damper ring and the gear slot.

[0108] II. Using Winkler elastic foundation model to calculate contact stiffness.

[0109] Winkler model is a classical elastic foundation model used to analyze the behavior of soil and mechanical structure foundations. Winkler model is widely used in mechanical and civil engineering to help understand and predict the deformation and response of related structures. Winkler model simplifies the contact component into a series of independent springs that do not interact with each other in 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 the calculation of contact pressure and wear simulation of contact problems. However, there are some limitations when using the Winkler elastic foundation model to calculate the contact stiffness between the damper ring and the gear slot:

[0110] (1) Independent spring assumption: 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, which limits the ability of the gear slot model in terms of lateral effects and shear stress transmission, and also leads to inaccuracy in the 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, but 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 in calculating contact stiffness using Hertz contact theory and Winkler elastic foundation model 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 groove is composed of a series of independent springs, ignoring the tangential continuity of the wheel groove. In addition, it is assumed that the contact between the damping ring and the gear groove 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 groove 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 various 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 achieves accurate solution of the contact stiffness between the damping ring installed on the gear and the gear groove, solving 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 various 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 ultimately 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 modified in the CAE simulation model according to the actual needs of the user and is not specifically limited in this embodiment.

[0124] (4) Boundary condition settings. Here, the contact properties of the gear groove and the damping ring in the normal and tangent directions of the contact surface are set. This setting is intended to ensure that the damping ring and the gear groove have contact behavior in all directions. The boundary condition settings can be modified in the CAE simulation model based on actual user needs and are not specifically limited in this embodiment.

[0125] (5) Load setting. The purpose of this setting is to create contact between the damping ring and the gear groove by applying force. The load setting can be modified in the CAE simulation model according to the user's actual needs and is not specifically limited in this embodiment.

[0126] The CAE simulation model is running. After setting the above parameters, the calculation of the contact model of the damping ring and the gear groove 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 any processing, then all the output parameter results on all nodes of the model will be obtained. In this way, it will be difficult to correctly filter 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 be set separately for the contact surface of the damping ring and the gear groove. 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 result stored in each node is the result 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 7The specific parameters in the figure are explained as follows: CNORMF refers to 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; CNORMF2 refers to the contact force of the node in the Y-direction; and CNORMF3 refers to the contact force of the node in the Z-direction. U refers to the displacement of the node, where U1 refers to the displacement of the node in the X-direction, U2 refers to the displacement of the node in the Y-direction, and U3 refers to the displacement of the node in the Z-direction.

[0131] 3. The post-processing part is 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 are 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, that is, 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 node and each direction degree of freedom, the contact stiffness of each node and each direction degree of freedom on the contact surface of the damping ring and the gear can be obtained as follows:

[0142]

[0143]

[0144] In the above formula, K i represents the set of contact stiffness of all nodes and all direction degrees of freedom on the contact surface of component i, k ijk represents the displacement and contact force of the k direction degree of freedom at node j on component i, wherein subscript i=(p, g), p represents the damping ring, and 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 contact surface of the damping ring, and m represents the total number of nodes on the contact surface of the gear; subscript k=(x, y, z), wherein 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] After the contact stiffness matrix K g K p of each node and each direction degree of freedom on the contact surface of the damping ring and the gear is solved, the total contact stiffness of the damping ring and the gear can be solved as follows:

[0146]

[0147]

[0148] In the above formula, K p_total represents the total contact stiffness of the contact surface of the damping ring, k pjx represents the first contact stiffness of the X direction degree of freedom of the jth node on the contact surface of the damping ring, k pjy represents the first contact stiffness of the Y direction degree of freedom of the jth node on the contact surface of the damping ring, k pjz represents the first contact stiffness of the Z direction degree of freedom of the jth node on the contact surface of the damping ring, k p_total_x represents the total contact stiffness of the X direction degree of freedom of the damping ring, k p_total_y represents the total contact stiffness of the Y direction degree of freedom of the damping ring, k p_total_z represents the total contact stiffness of the Z direction degree of freedom of the damping ring, 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 X direction degree of freedom of the gear groove, k g_total_y represents the total contact stiffness of the Y direction degree of freedom of the gear groove, k g_total_zk represents the total contact stiffness of the gear groove in the Z-direction degree of freedom, gjx k represents the first contact stiffness of the jth node on the gear groove contact surface in the X-direction degree of freedom, gjy k represents the first contact stiffness of the jth node on the gear groove contact surface in the Y direction degree of freedom, 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 gear is obtained by solving p_total and K g_total Then, K p_total With K g_total The sum of the two is the total contact stiffness between the damping ring and the gear:

[0150]

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

[0153] Differences from existing technologies:

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

[0155] 2. Compared with the Winkler elastic foundation model: The Winkler model only has a normal spring model and ignores boundary effects. 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 includes 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 contact simulation results;

[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, 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 Figure 9 , an embodiment of the present application further provides an electronic device, the electronic device comprising:

[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 car 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 as a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is configured to execute relevant programs to implement the technical solutions provided by the embodiments of the present disclosure.

[0169] 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). Memory 1700 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in memory 1700 and is called by processor 1600 to execute the method for calculating the contact stiffness between the damping ring and the gear based on contact simulation in the embodiments of this disclosure.

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

[0171] Communication interface 1900, used to implement communication interaction between this device and other devices, which can be achieved through wired means (such as USB, network cable, etc.) or wireless means (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] An embodiment of the present disclosure also provides a storage medium, which is a computer-readable storage medium and stores computer-executable instructions. 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 arranged 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 understand that the technical solutions shown in the drawings do not constitute a limitation on the embodiments of the present disclosure, and may include more or fewer steps than shown in the drawings, or a combination of certain steps, or different steps.

[0178] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0179] Those skilled in the art will appreciate that all or some of the steps in the methods, systems, and functional modules / units in the devices disclosed above may be implemented as software, firmware, hardware, or appropriate combinations 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 sequential order. 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 variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes 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 this 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 previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items 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 this 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 merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, 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] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0184] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or 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 for enabling an electronic device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes various media that can store programs, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk. The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field 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 a CAE model, performing contact simulation between the damping ring and the gear groove using the CAE model, and obtaining a contact simulation result; Filtering the contact simulation results to obtain filtered data corresponding to the damping ring and the gear groove, respectively, the filtered data including 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; 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 slot; Calculate 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; Calculate 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 based on the contact force and displacement of all nodes on the contact surface corresponding to the gear groove; 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 based on 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 slot in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom based on the second contact stiffness of each node on the contact surface corresponding to the gear slot 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 based on 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.

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 using the CAE model to obtain the following contact simulation results: 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 slot are assembled, and after assembly, analysis steps, boundary conditions, and loads for generating contact between the damping ring and the gear slot are set to perform contact simulation between the damping ring and the gear slot.

3. 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 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; Filtered data corresponding to the gear groove including contact force and displacement is selected 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 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 includes: 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 to obtain the first contact stiffness of each node on the contact surface corresponding to the damping ring in the X-direction degree of freedom; Calculating 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 to 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 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.

5. 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: 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: in, represents the total contact stiffness of the damping ring contact surface, Indicates the contact surface of the damping ring The first contact stiffness of the node in the X-direction degree of freedom, Indicates the contact surface of the damping ring The first contact stiffness of each node in the Y-direction degree of freedom, Indicates the contact surface of the damping ring The first contact stiffness of the node in the Z direction of freedom, represents the total contact stiffness of the damping ring in the X-direction degree of freedom, represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, represents the total contact stiffness of 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 1, characterized in that: 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 includes: in, represents the contact stiffness between the damping ring and the gear, represents the total contact stiffness of the damping ring contact surface, represents the total contact stiffness of the gear groove contact surface, represents the total contact stiffness of the damping ring in the X-direction degree of freedom, represents the total contact stiffness of the gear slot in the X-direction degree of freedom, represents the total contact stiffness of the damping ring in the Y-direction degree of freedom, represents the total contact stiffness of the gear slot in the Y-direction degree of freedom, represents the total contact stiffness of the gear groove in the Z-direction degree of freedom, represents the total contact stiffness of the damping ring in the Z-direction degree of freedom, represents the contact stiffness between the damping ring and the gear in the X-direction degree of freedom, represents the contact stiffness between the damping ring and the gear in the Y-direction degree of freedom, Represents the contact stiffness between the damping ring and the gear in the Z degree of freedom.

7. A system for calculating the 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 a 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, configured 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 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; A 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, including: 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 slot; Calculate 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; Calculate 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 based on the contact force and displacement of all nodes on the contact surface corresponding to the gear groove; 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 based on 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 slot in the X-direction degree of freedom, the Y-direction degree of freedom, and the Z-direction degree of freedom based on the second contact stiffness of each node on the contact surface corresponding to the gear slot 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 based on 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.

8. 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 to enable the at least one control processor to 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 6.

9. 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 the damping ring and the gear based on contact simulation according to any one of claims 1 to 6.

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