Sliding door reliability evaluation method, device and equipment and readable storage medium
By constructing simulation models and simulation analysis, the reliability of sliding doors is evaluated, and the problem that the existing technology cannot evaluate the reliability of sliding doors is solved, ensuring the stability and safety of sliding doors in use.
Patent Information
- Application Number
- CN202411167810.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2024-12-17
AI Technical Summary
The prior art cannot effectively evaluate the reliability of sliding doors, resulting in the problem of insufficient reliability in daily use.
By building a simulation model, setting constraints and loads, and conducting simulation analysis, evaluating the reliability of the sliding door in a fully open state, including detecting abnormal indicators and optimizing them to determine the reliability evaluation results of the sliding door.
The evaluation of the reliability of the sliding door is achieved to ensure its stability and safety during use, and avoid the problem of insufficient reliability caused by unreasonable design.
Smart Images
Figure CN119150447A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle design technology, and in particular to a sliding door reliability assessment method, device, equipment and computer-readable storage medium. Background Art
[0002] Because the swing door has a wide horizontal swing during the opening and closing process, it is not convenient for users to open and close the door when getting on and off the vehicle, and it also poses a safety hazard to other vehicles and pedestrians on the road (when temporarily parking on the side of the road, the door will basically occupy half of the lane once it is opened). Sliding doors do not have to worry about operational convenience or "door opening kill", so sliding doors are increasingly used in MPV model designs and are an important component of MPV models.
[0003] However, if the sliding door is not designed properly, it will lead to insufficient reliability in daily use. Therefore, how to evaluate the reliability of sliding doors is extremely important in the vehicle model development stage. However, from the current research status of the automotive industry, research efforts are mainly focused on the reliability evaluation of swing doors and the smoothness evaluation of sliding doors. A method for evaluating the reliability of sliding doors has not yet been found, and it is impossible to evaluate the reliability of sliding doors. Summary of the invention
[0004] The present application provides a sliding door reliability assessment method, device, equipment and computer-readable storage medium, which can solve the technical problem that the reliability of a sliding door cannot be assessed in the prior art.
[0005] In a first aspect, an embodiment of the present application provides a sliding door reliability assessment method, the sliding door reliability assessment method comprising:
[0006] Constructing a simulation model, in which the sliding door assembly is in a fully open state relative to the vehicle body;
[0007] Setting constraints and loads, the loads including a first load and a second load, the first load being the gravity acceleration of the entire simulation model, and the second load being the initial kinetic energy of the sliding door assembly toward the rear of the vehicle;
[0008] Based on the simulation model, constraints and loads, a simulation analysis is performed for the predicted number of times to obtain actual values corresponding to various reliability evaluation indicators;
[0009] The reliability evaluation result of the sliding door is obtained based on the actual values.
[0010] In combination with the first aspect, in one implementation, the step of obtaining a sliding door reliability assessment result based on the actual values includes:
[0011] Check whether each actual value is abnormal;
[0012] If there is an abnormal actual value, the sliding door reliability assessment result is determined to be unreliable;
[0013] If there is no abnormal actual value, it is determined that the sliding door reliability assessment result is reliable.
[0014] In combination with the first aspect, in one embodiment, after the step of determining that the sliding door reliability assessment result is unreliable if there is an abnormal actual value, the method further includes:
[0015] The abnormal parts in the simulation model are optimized to obtain a new simulation model, and the new simulation model is used as the simulation model. The simulation analysis based on the simulation model, constraints and loads for the predicted number of times is returned to obtain the actual values corresponding to the various reliability evaluation indicators. The abnormal parts are the parts involved in the abnormal actual values.
[0016] In combination with the first aspect, in one implementation, the step of optimizing the abnormal parts in the simulation model to obtain a new simulation model includes:
[0017] The materials of abnormal parts in the simulation model are changed to obtain a new simulation model.
[0018] In combination with the first aspect, in one implementation, the reliability evaluation index includes the maximum plastic strain of the door, the maximum plastic strain of the vehicle body, the loading displacement of the door, the residual displacement of the door, and the contact distance of the corresponding parts in the guide rail area.
[0019] In combination with the first aspect, in one implementation, the sliding door reliability assessment method further includes:
[0020] If the first actual value corresponding to the maximum plastic strain of the vehicle door is greater than the first threshold, determining that the first actual value is abnormal;
[0021] If the second actual value corresponding to the maximum plastic strain of the vehicle body is greater than the second threshold, determining that the second actual value is abnormal;
[0022] If the third actual value corresponding to the door loading displacement is greater than the third threshold, determining that the third actual value is abnormal;
[0023] If the fourth actual value corresponding to the residual displacement of the vehicle door is greater than the fourth threshold, determining that the fourth actual value is abnormal;
[0024] If the fifth actual value corresponding to the contact distance of the parts corresponding to the guide rail area is less than the fifth threshold value, it is determined that the fifth actual value is abnormal.
[0025] In combination with the first aspect, in one implementation, the initial kinetic energy is a preset speed.
[0026] In a second aspect, an embodiment of the present application provides a sliding door reliability assessment device, the sliding door reliability assessment device comprising:
[0027] A construction module, used to construct a simulation model, in which the sliding door assembly is in a fully open state relative to the vehicle body;
[0028] A setting module, used to set constraints and loads, wherein the loads include a first load and a second load, wherein the first load is the gravity acceleration of the entire simulation model, and the second load is the initial kinetic energy of the sliding door assembly toward the rear of the vehicle;
[0029] The simulation module is used to perform simulation analysis of the prediction times based on the simulation model constructed by the construction module and the constraints and loads set by the setting module, obtain the actual values corresponding to the reliability evaluation indicators and output them to the analysis module;
[0030] The analysis module is used to obtain a sliding door reliability evaluation result based on the actual values.
[0031] In a third aspect, an embodiment of the present application provides a sliding door reliability assessment device, the sliding door reliability assessment device comprising a processor, a memory, and a sliding door reliability assessment program stored in the memory and executable by the processor, wherein when the sliding door reliability assessment program is executed by the processor, the steps of the sliding door reliability assessment method described in the first aspect are implemented.
[0032] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a sliding door reliability assessment program is stored, wherein when the sliding door reliability assessment program is executed by a processor, the steps of the sliding door reliability assessment method described in the first aspect are implemented.
[0033] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:
[0034] In the embodiment of the present application, a simulation model is constructed, in which the sliding door assembly is in a fully open state relative to the vehicle body; constraints and loads are set, and the loads include a first load and a second load, the first load is the gravity acceleration of the simulation model as a whole, and the second load is the initial kinetic energy of the sliding door assembly toward the rear of the vehicle; a simulation analysis of the predicted number of times is performed based on the simulation model, constraints, and loads to obtain the actual values corresponding to the various reliability evaluation indicators; and the sliding door reliability evaluation results are obtained based on the actual values. Through the embodiment of the present application, a simulation model is constructed in which the sliding door assembly is in a fully open state relative to the vehicle body, and a simulation analysis is performed in combination with constraints and loads, that is, a real-life simulation of the overload condition of the sliding door in a fully open state is performed, thereby realizing the evaluation of the sliding door reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] Figure 1 This is a flow chart of an embodiment of a sliding door reliability assessment method of the present application;
[0036] Figure 2 It is a schematic diagram of the overload condition of the sliding door in the fully open state;
[0037] Figure 3 A schematic diagram of a flow chart of another embodiment of the sliding door reliability assessment method of the present application;
[0038] Figure 4 This is a schematic diagram of the functional modules of an embodiment of a sliding door reliability assessment device of the present application;
[0039] Figure 5 This is a schematic diagram of the hardware structure of the sliding door reliability assessment device involved in the embodiment of the present application. DETAILED DESCRIPTION
[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0042] In a first aspect, an embodiment of the present application provides a sliding door reliability assessment method.
[0043] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of an embodiment of a sliding door reliability assessment method of the present application. Figure 1 As shown in the figure, the sliding door reliability assessment method includes:
[0044] Step S10, constructing a simulation model, in which the sliding door assembly is in a fully open state relative to the vehicle body;
[0045] In this embodiment, the process of building a simulation model is as follows:
[0046] Step 1.1, collect CAD data of the vehicle body, sliding door, guide wheel, load-bearing wheel, slide rail, limit block, sealing strip, welding point and structural adhesive. Import the collected CAD data into Hypermesh or Ansa software for meshing. Among them, the vehicle body and sliding door data are modeled according to 2D shell elements; the guide wheel, load-bearing wheel, slide rail, limit block, sealing strip and other data are modeled according to 3D solid elements; the welding point is modeled in the form of fastener connection, and the structural adhesive is modeled in the form of adhesives (chexa+TIE contact) connection.
[0047] Step 1.2, collect the mass and center of mass position information of the counterweight parts (such as door inner panels, speakers, etc.) assembled on the sliding door, generate mass points in sequence, and assemble the mass points to the sliding door through the RBE3 flexible unit.
[0048] Step 1.3, assign corresponding material and thickness information to 2D / 3D units such as car body, sliding door, guide wheel, load-bearing wheel, slide rail, limit block, sealing strip, welding point and structural adhesive through the Bom table issued by the car body department.
[0049] Step 1.4, assemble the various components together, and adjust the sliding door assembly and the vehicle body to a fully open position to obtain a simulation model.
[0050] Among them, different contact settings are performed for each position in the simulation model, as follows:
[0051] a. The body and all sheet metal parts of the sliding door are set to sliding contact type, and the friction coefficient can be set to 0.15;
[0052] b. The hinge stamping part and the limit block are set to a sliding contact type, and the friction coefficient can be set to 0.75;
[0053] c. The roller and the slide rail are set to rolling contact type, and the friction coefficient can be set to 0.05;
[0054] d. The contact type between the car door, sliding door and the sealing strip is set to TIE type.
[0055] Among them, the rotational freedom release setting is performed on the roller rotation mechanism at each position in the simulation model.
[0056] The simulation model constructed in this embodiment fully considers the actual composition of rubber materials such as sealing strips in the internal modeling details and restores them according to the actual state; at the same time, the various contact relationships between the moving mechanisms are fully simulated in real scenes, which strongly supports the high precision of the simulation.
[0057] The above is only a schematic description of building a simulation model. The simulation model can also be built in other ways, and the tools used to build the simulation model are not limited here.
[0058] Step S20, setting constraints and loads, the loads including a first load and a second load, the first load being the gravity acceleration of the entire simulation model, and the second load being the initial kinetic energy of the sliding door assembly toward the rear of the vehicle;
[0059] In this embodiment, in order to simulate the overload condition of the sliding door in the fully open state, the constraints and loads are set as required. Figure 2 , Figure 2 Figure 1 is a schematic diagram of the overload condition of the sliding door in the fully open state. Figure 2 As shown, the constraint is to cut off the body surface ( Figure 2 The first load is the gravity acceleration of the entire simulation model, that is, -1g in the Z direction, where g is the gravity acceleration; the second load is the initial kinetic energy of the sliding door assembly toward the rear of the vehicle, that is, the initial kinetic energy in the X direction. The initial kinetic energy can be a loading force or a velocity.
[0060] Furthermore, in one embodiment, the initial kinetic energy is a preset speed.
[0061] In this embodiment, it is considered that the actual overload condition of the sliding door in the fully open state is generally: when the sliding door is in the fully open state, the passenger applies a force toward the rear of the vehicle with his hand when getting on or off the vehicle, or the body collides with the sliding door, causing the sliding door to be overloaded. This is a dynamic process. If the initial kinetic energy is a loading force, the loading force is a static representation in the simulation analysis and cannot accurately simulate the actual overload condition. Therefore, in this embodiment, the preset speed is used as the initial kinetic energy to more accurately simulate the actual overload condition. Figure 2 As shown, the preset speed V = 3.5 m / s. This is only a schematic illustration of the preset speed, and the preset speed can be set according to actual needs.
[0062] Step S30, performing simulation analysis of the predicted number of times based on the simulation model, constraints and loads to obtain actual values corresponding to various reliability evaluation indicators;
[0063] In this embodiment, the simulation software is run a preset number of times based on the simulation model, constraints and loads, and the simulation software automatically outputs actual values corresponding to various reliability evaluation indicators.
[0064] Among them, the reliability evaluation index is preset according to actual needs.
[0065] Step S40, obtaining a sliding door reliability evaluation result based on the actual values.
[0066] In this embodiment, each actual value is compared with each corresponding normal value range, so as to determine which reliability evaluation indicators are normal and which reliability evaluation indicators are abnormal, thereby obtaining the sliding door reliability evaluation result.
[0067] In the embodiment of the present application, a simulation model is constructed, in which the sliding door assembly is in a fully open state relative to the vehicle body; constraints and loads are set, and the loads include a first load and a second load, the first load is the gravity acceleration of the simulation model as a whole, and the second load is the initial kinetic energy of the sliding door assembly toward the rear of the vehicle; a simulation analysis of the predicted number of times is performed based on the simulation model, constraints, and loads to obtain the actual values corresponding to the various reliability evaluation indicators; and the sliding door reliability evaluation results are obtained based on the actual values. Through the embodiment of the present application, a simulation model is constructed in which the sliding door assembly is in a fully open state relative to the vehicle body, and a simulation analysis is performed in combination with constraints and loads, that is, a real-life simulation of the overload condition of the sliding door in a fully open state is performed, thereby realizing the evaluation of the sliding door reliability.
[0068] Furthermore, in one embodiment, step S40 includes:
[0069] Step S401, detecting whether each actual value is abnormal;
[0070] Step S402, if there is an abnormal actual value, determining that the sliding door reliability assessment result is unreliable;
[0071] Step S403: If there is no abnormal actual value, it is determined that the sliding door reliability assessment result is reliable.
[0072] In this embodiment, for each actual value, it is compared with the limit value, and if it exceeds the limit value, it is determined to be an abnormal actual value. When there is an abnormal actual value, it can be determined that the sliding door reliability assessment result is unreliable.
[0073] Further, in one embodiment, referring to Figure 3 , Figure 3 This is a flow chart of another embodiment of the sliding door reliability assessment method of the present application. Figure 3 As shown, after step S402, the following further includes:
[0074] Step S404, optimizing the abnormal parts in the simulation model to obtain a new simulation model;
[0075] The new simulation model is used as the simulation model, and the process returns to step S30 , wherein the abnormal parts are parts involving abnormal actual values.
[0076] In this embodiment, when there are abnormal actual values, the parts involved in the abnormal actual values are optimized to obtain a new simulation model, and then the process returns to step S30 based on the new simulation model until the sliding door reliability assessment result is reliable.
[0077] There are many ways to optimize abnormal parts, such as changing the layout of abnormal parts, increasing the sheet metal thickness of abnormal parts, or changing the material of abnormal parts.
[0078] Further, in one embodiment, the step of optimizing the abnormal parts in the simulation model to obtain a new simulation model includes:
[0079] The materials of abnormal parts in the simulation model are changed to obtain a new simulation model.
[0080] In this embodiment, if the layout position of the abnormal parts is changed, it may cause interference with other parts, resulting in more modification work; if the sheet metal thickness of the abnormal parts is increased, the weight will increase significantly and the cost performance will be low.
[0081] In summary, in this embodiment, the material of the abnormal parts in the simulation model is changed, specifically, the material grade of the abnormal parts is changed in the simulation software, so as to obtain a new simulation model.
[0082] Furthermore, in one embodiment, the reliability evaluation indexes include the maximum plastic strain of the door, the maximum plastic strain of the vehicle body, the loading displacement of the door, the residual displacement of the door, and the contact distance of the corresponding parts in the guide rail area.
[0083] In this embodiment, the specific contents included in the reliability evaluation index can be increased or reduced as needed on the basis of the above.
[0084] Furthermore, in one embodiment, the sliding door reliability assessment method further includes:
[0085] If the first actual value corresponding to the maximum plastic strain of the vehicle door is greater than the first threshold, determining that the first actual value is abnormal;
[0086] If the second actual value corresponding to the maximum plastic strain of the vehicle body is greater than the second threshold, determining that the second actual value is abnormal;
[0087] If the third actual value corresponding to the door loading displacement is greater than the third threshold, determining that the third actual value is abnormal;
[0088] If the fourth actual value corresponding to the residual displacement of the vehicle door is greater than the fourth threshold, determining that the fourth actual value is abnormal;
[0089] If the fifth actual value corresponding to the contact distance of the parts corresponding to the guide rail area is less than the fifth threshold value, it is determined that the fifth actual value is abnormal.
[0090] In this embodiment, it should be noted that the first actual value corresponding to the maximum plastic strain of the door, the second actual value corresponding to the maximum plastic strain of the vehicle body, the third actual value corresponding to the loading displacement of the door, the fourth actual value corresponding to the residual displacement of the door, and the fifth actual value corresponding to the contact distance of the corresponding parts in the guide rail area are all automatically output by the simulation software, which is a function of the simulation software. The first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold are all set according to actual needs.
[0091] In a second aspect, an embodiment of the present application also provides a sliding door reliability assessment device.
[0092] In one embodiment, referring to Figure 4 , Figure 4 This is a schematic diagram of the functional modules of an embodiment of the sliding door reliability assessment device of the present application. Figure 4 As shown, the sliding door reliability assessment device comprises:
[0093] A construction module 10 is used to construct a simulation model, in which the sliding door assembly is in a fully open state relative to the vehicle body;
[0094] A setting module 20, for setting constraints and loads, wherein the loads include a first load and a second load, wherein the first load is the gravity acceleration of the entire simulation model, and the second load is the initial kinetic energy of the sliding door assembly toward the rear of the vehicle;
[0095] The simulation module 30 is used to perform simulation analysis of the number of predictions based on the simulation model constructed by the construction module 10 and the constraints and loads set by the setting module 20, obtain the actual values corresponding to the reliability evaluation indicators and output them to the analysis module 40;
[0096] The analysis module 40 is used to obtain a sliding door reliability evaluation result based on the actual values.
[0097] Furthermore, in one embodiment, the analysis module 40 is used to:
[0098] Check whether each actual value is abnormal;
[0099] If there is an abnormal actual value, the sliding door reliability assessment result is determined to be unreliable;
[0100] If there is no abnormal actual value, it is determined that the sliding door reliability assessment result is reliable.
[0101] Furthermore, in one embodiment, the sliding door reliability assessment device further includes an optimization module for:
[0102] The abnormal parts in the simulation model are optimized to obtain a new simulation model, the new simulation model is used as the simulation model, and the simulation module 30 is notified to perform simulation analysis based on the simulation model, constraints and loads to predict the number of times, and the steps of obtaining the actual values corresponding to the various reliability evaluation indicators are performed. The abnormal parts are the parts involved in the abnormal actual values.
[0103] Furthermore, in one embodiment, the optimization module is used to:
[0104] The materials of abnormal parts in the simulation model are changed to obtain a new simulation model.
[0105] Furthermore, in one embodiment, the reliability evaluation indexes include the maximum plastic strain of the door, the maximum plastic strain of the vehicle body, the loading displacement of the door, the residual displacement of the door, and the contact distance of the corresponding parts in the guide rail area.
[0106] Furthermore, in one embodiment, the analysis module 40 is used to:
[0107] If the first actual value corresponding to the maximum plastic strain of the vehicle door is greater than the first threshold, determining that the first actual value is abnormal;
[0108] If the second actual value corresponding to the maximum plastic strain of the vehicle body is greater than the second threshold, determining that the second actual value is abnormal;
[0109] If the third actual value corresponding to the door loading displacement is greater than the third threshold, determining that the third actual value is abnormal;
[0110] If the fourth actual value corresponding to the residual displacement of the vehicle door is greater than the fourth threshold, determining that the fourth actual value is abnormal;
[0111] If the fifth actual value corresponding to the contact distance of the parts corresponding to the guide rail area is less than the fifth threshold value, it is determined that the fifth actual value is abnormal.
[0112] Among them, the functional implementation of each module in the above-mentioned sliding door reliability assessment device corresponds to each step in the above-mentioned sliding door reliability assessment method embodiment, and its functions and implementation processes are no longer repeated here one by one.
[0113] In a third aspect, an embodiment of the present application provides a sliding door reliability assessment device, which may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.
[0114] Reference Figure 5 , Figure 5Schematic diagram of the hardware structure of the sliding door reliability assessment device involved in the embodiment of the present application. In the embodiment of the present application, the sliding door reliability assessment device may include a processor, a memory, a communication interface and a communication bus.
[0115] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.
[0116] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the sliding door reliability assessment device, and the interface used to realize the interconnection of the sliding door reliability assessment device with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, an optical fiber interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.
[0117] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.
[0118] The processor may be a general-purpose processor, and the general-purpose processor may call the sliding door reliability assessment program stored in the memory and execute the sliding door reliability assessment method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the sliding door reliability assessment program is called may refer to the various embodiments of the sliding door reliability assessment method of the present application, and will not be described in detail here.
[0119] Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.
[0120] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.
[0121] The computer-readable storage medium of the present application stores a sliding door reliability assessment program, wherein when the sliding door reliability assessment program is executed by a processor, the steps of the sliding door reliability assessment method as described above are implemented.
[0122] Among them, the method implemented when the sliding door reliability assessment program is executed can refer to the various embodiments of the sliding door reliability assessment method of the present application, and will not be repeated here.
[0123] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.
[0124] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings 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 limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.
[0125] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.
[0126] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.
[0127] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.
[0128] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.
[0129] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A sliding door reliability assessment method, characterized in that: The sliding door reliability assessment method comprises: Constructing a simulation model, in which the sliding door assembly is in a fully open state relative to the vehicle body; Setting constraints and loads, the loads including a first load and a second load, the first load being the gravity acceleration of the entire simulation model, and the second load being the initial kinetic energy of the sliding door assembly toward the rear of the vehicle; Based on the simulation model, constraints and loads, a simulation analysis is performed for the predicted number of times to obtain actual values corresponding to various reliability evaluation indicators; The reliability evaluation result of the sliding door is obtained based on the actual values.
2. The sliding door reliability assessment method according to claim 1, characterized in that: The step of obtaining the sliding door reliability evaluation result based on the actual values comprises: Check whether each actual value is abnormal; If there is an abnormal actual value, the sliding door reliability assessment result is determined to be unreliable; If there is no abnormal actual value, it is determined that the sliding door reliability assessment result is reliable.
3. The sliding door reliability assessment method according to claim 2, characterized in that: After the step of determining that the sliding door reliability evaluation result is unreliable if there is an abnormal actual value, the method further includes: The abnormal parts in the simulation model are optimized to obtain a new simulation model, and the new simulation model is used as the simulation model. The simulation analysis based on the simulation model, constraints and loads for the predicted number of times is returned to obtain the actual values corresponding to the various reliability evaluation indicators. The abnormal parts are the parts involved in the abnormal actual values.
4. The sliding door reliability assessment method according to claim 3, characterized in that: The step of optimizing the abnormal parts in the simulation model to obtain a new simulation model comprises: The materials of abnormal parts in the simulation model are changed to obtain a new simulation model.
5. The sliding door reliability assessment method according to claim 2, characterized in that: The reliability evaluation indexes include the maximum plastic strain of the door, the maximum plastic strain of the vehicle body, the loading displacement of the door, the residual displacement of the door and the contact distance of the corresponding parts in the guide rail area.
6. The sliding door reliability assessment method according to claim 5, characterized in that: The sliding door reliability assessment method further includes: If the first actual value corresponding to the maximum plastic strain of the vehicle door is greater than the first threshold, determining that the first actual value is abnormal; If the second actual value corresponding to the maximum plastic strain of the vehicle body is greater than the second threshold, determining that the second actual value is abnormal; If the third actual value corresponding to the door loading displacement is greater than the third threshold, determining that the third actual value is abnormal; If the fourth actual value corresponding to the residual displacement of the vehicle door is greater than the fourth threshold, determining that the fourth actual value is abnormal; If the fifth actual value corresponding to the contact distance of the parts corresponding to the guide rail area is less than the fifth threshold value, it is determined that the fifth actual value is abnormal.
7. The sliding door reliability assessment method according to any one of claims 1 to 6, characterized in that: The initial kinetic energy is a preset speed.
8. A sliding door reliability assessment device, characterized in that: The sliding door reliability assessment device comprises: A construction module, used to construct a simulation model, in which the sliding door assembly is in a fully open state relative to the vehicle body; A setting module, used to set constraints and loads, wherein the loads include a first load and a second load, wherein the first load is the gravity acceleration of the entire simulation model, and the second load is the initial kinetic energy of the sliding door assembly toward the rear of the vehicle; The simulation module is used to perform simulation analysis of the prediction times based on the simulation model constructed by the construction module and the constraints and loads set by the setting module, obtain the actual values corresponding to the reliability evaluation indicators and output them to the analysis module; The analysis module is used to obtain a sliding door reliability evaluation result based on the actual values.
9. A sliding door reliability assessment device, characterized in that: The sliding door reliability assessment device includes a processor, a memory, and a sliding door reliability assessment program stored in the memory and executable by the processor, wherein when the sliding door reliability assessment program is executed by the processor, the steps of the sliding door reliability assessment method as described in any one of claims 1 to 7 are implemented.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a sliding door reliability assessment program, wherein when the sliding door reliability assessment program is executed by a processor, the steps of the sliding door reliability assessment method according to any one of claims 1 to 7 are implemented.