A method, system, device and storage medium for testing and analyzing dynamic deformation of automobile doors

Abstract

A method, system, device and storage medium for testing and analyzing the dynamic deformation of automobile doors, belonging to the field of dynamic deformation testing technology for automobile doors, solves the problem that the prior art lacks a dynamic deformation testing method applicable to real vehicles and with unrestricted door measurement positions. A thin-film pressure distribution testing system is used to obtain the contact width and compression load information of automobile door sealing strips under static and dynamic conditions; compression deformation analysis of the sealing strips is performed by simulation methods to obtain the corresponding relationship between the contact width and compression amount, and the corresponding relationship between the compression load and compression amount of the automobile door sealing strips; according to the contact width, compression load, corresponding relationship between the contact width and compression amount, and corresponding relationship between the compression load and compression amount of the actual measured test of the sealing strips, the dynamic deformation amount of the sealing strip corresponding to the door position is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of dynamic deformation testing of vehicle doors, and in particular to a method, system, equipment and storage medium for testing and analyzing the dynamic deformation of vehicle doors. Background Art

[0002] Sealing strips are used to seal moving parts such as car doors in both static and dynamic states. When the car is moving, due to external excitations such as the road surface and wind, deformation will occur between the relatively moving parts. If the deformation is large, it is easy to cause a leak. Therefore, the compression amount of the sealing strip needs to be reasonably designed to control the dynamic sealing.

[0003] Prior art, patent document CN110502788A discloses "a method for obtaining door deformation considering the nonlinear compression characteristics of sealing strips", which obtains the nonlinear compression load-deformation data of the door sealing strip compression process based on finite element analysis, obtains the nonlinear compression load-deformation function relationship of the sealing strip through segmented spline interpolation, obtains the airflow pressure data of the outer surface of the door based on computational fluid dynamics analysis, obtains the position and direction of the deformation required to be solved on the car door and the flexibility matrix of the position and direction of the airflow force action point on the car door based on finite element analysis, and uses numerical analysis methods to iteratively solve the door deformation. This method provides a means of rapid calculation and evaluation for engineering analysis of door deformation, and provides a numerical analysis method and basis for compression evaluation and acoustic optimization of sealing strips. It has the advantages of simple calculation process steps, easy programming, good versatility, and high engineering practical value, but this technical solution is only applicable to the simulation of door deformation in the early stage of automobile development. Patent document CN103940393A discloses "a device for measuring the displacement of a vehicle door during driving", which uses a recording mechanism and a pointer mechanism. The recording mechanism is fixed on the side wall, and the pointer mechanism is fixed on the door. Data is recorded during vehicle operation and analyzed after the vehicle stops, ensuring measurement accuracy and personnel safety. However, this technical solution limits the test position of the door deformation due to the structural limitations of the two mechanisms.

[0004] In summary, the prior art lacks a dynamic deformation testing method that is applicable to a real vehicle and has no restrictions on the measurement position of the vehicle door. Summary of the invention

[0005] The present invention solves the problem that the prior art lacks a dynamic deformation testing method applicable to a real vehicle and with no restrictions on the measurement position of a vehicle door.

[0006] A method for testing and analyzing the dynamic deformation of a vehicle door according to the present invention comprises the following steps:

[0007] Step S1, sticking a pressure sensor on a sealing strip corresponding to a position to be tested on a vehicle door, closing the vehicle door to a locked state, and performing a sealing strip static contact width and compression load test as well as a sealing strip dynamic contact width and compression load test;

[0008] Step S2, intercepting the sealing strip contact width and compression load test position, obtaining the cross section of the sealing strip and the contact structure, establishing a sealing strip finite element simulation model, performing a sealing strip compression deformation simulation test, and obtaining the corresponding relationship between the sealing strip contact width and the compression amount, and the corresponding relationship between the compression load and the compression amount;

[0009] Step S3, obtaining the static compression amount and dynamic compression amount of the sealing strip according to the static contact width, dynamic contact width, contact width and compression amount correspondence of the sealing strip, and then obtaining the dynamic deformation amount X1 of the door;

[0010] Step S4, according to the static compression load, dynamic compression load, compression load and compression amount correspondence of the sealing strip, the static compression amount and dynamic compression amount of the sealing strip are obtained, and then the dynamic deformation amount X2 of the vehicle door is obtained;

[0011] Step S5, processing the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door to obtain the dynamic deformation amount of the vehicle door.

[0012] Furthermore, in one embodiment of the present invention, in the step S1, the pressure sensor measures in real time the electrical signal of the pressure distribution of the sealing strip when the door is in motion, and converts the electrical signal into pressure distribution data through a data processor.

[0013] Furthermore, in one embodiment of the present invention, in the step S1, the pressure sensor is a thin film sensor with a thickness of 0.1 mm.

[0014] Further, in an embodiment of the present invention, in the step S1, the front side of the pressure sensor faces the direction of the sealing strip.

[0015] Furthermore, in an embodiment of the present invention, in the step S1, the sealing strip is located at the center of the pressure sensor.

[0016] Furthermore, in one embodiment of the present invention, in the step S1, the dynamic contact width and compression load test of the sealing strip is performed under a variety of dynamic working conditions.

[0017] Furthermore, in one embodiment of the present invention, in the step S5, the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door are processed as arithmetic mean values.

[0018] The present invention provides a vehicle door dynamic deformation testing and analysis system, the system comprising the following modules:

[0019] Sealing module: stick the pressure sensor on the sealing strip corresponding to the position to be tested on the door, close the door to the locked state, and perform static contact width and compression load tests on the sealing strip as well as dynamic contact width and compression load tests on the sealing strip;

[0020] The simulation module intercepts the contact width of the sealing strip and the compression load test position, obtains the cross section of the sealing strip and the contact structure, establishes a finite element simulation model of the sealing strip, performs a compression deformation simulation test of the sealing strip, and obtains the corresponding relationship between the contact width of the sealing strip and the compression amount, as well as the corresponding relationship between the compression load and the compression amount;

[0021] The contact module obtains the static compression and dynamic compression of the sealing strip according to the static contact width, dynamic contact width, and the corresponding relationship between the contact width and the compression, and then obtains the dynamic deformation X1 of the door;

[0022] The dynamic module obtains the static compression amount and dynamic compression amount of the sealing strip according to the corresponding relationship between the static compression load, dynamic compression load, compression load and compression amount of the sealing strip, and then obtains the dynamic deformation amount X2 of the door;

[0023] The analysis module processes the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door to obtain the dynamic deformation amount of the vehicle door.

[0024] An electronic device described in the present invention comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0025] Memory, used to store computer programs;

[0026] The processor is used to implement any method step described in the above method when executing the program stored in the memory.

[0027] The present invention provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any method step described in the above method is implemented.

[0028] The present invention solves the problem that the prior art lacks a dynamic deformation test method applicable to real vehicles and with no restrictions on the measurement position of vehicle doors. Specific beneficial effects include:

[0029] The automobile door dynamic deformation testing and analysis method described in the present invention is obtained through actual vehicle testing, has low requirements on the test position, and the testing process using a thin-film sensor has basically no effect on the vehicle state. It has the advantages of high accuracy, strong applicability, convenience, speed, and high engineering use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 It is a flow chart of the method for testing and analyzing the dynamic deformation of a vehicle door described in a specific implementation manner.

[0032] Figure 2 2 is a diagram of the arrangement of pressure sensors according to a specific implementation method.

[0033] Figure 3 It is a compression deformation analysis diagram of the sealing strip described in the specific implementation method.

[0034] Figure 4 4 is a graph showing the corresponding relationship between the contact width and the compression amount described in the specific implementation manner.

[0035] Figure 5 It is a diagram showing the corresponding relationship between the compression load and the compression amount described in the specific implementation manner. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe various embodiments of the present invention in conjunction with the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] A method for testing and analyzing the dynamic deformation of a vehicle door described in this embodiment includes the following steps:

[0038] Step S1, sticking a pressure sensor on a sealing strip corresponding to a position to be tested on a vehicle door, closing the vehicle door to a locked state, and performing a sealing strip static contact width and compression load test as well as a sealing strip dynamic contact width and compression load test;

[0039] Step S2, intercepting the sealing strip contact width and compression load test position, obtaining the cross section of the sealing strip and the contact structure, establishing a sealing strip finite element simulation model, performing a sealing strip compression deformation simulation test, and obtaining the corresponding relationship between the sealing strip contact width and the compression amount, and the corresponding relationship between the compression load and the compression amount;

[0040] Step S3, obtaining the static compression amount and dynamic compression amount of the sealing strip according to the static contact width, dynamic contact width, contact width and compression amount correspondence of the sealing strip, and then obtaining the dynamic deformation amount X1 of the door;

[0041] Step S4, according to the static compression load, dynamic compression load, compression load and compression amount correspondence of the sealing strip, the static compression amount and dynamic compression amount of the sealing strip are obtained, and then the dynamic deformation amount X2 of the vehicle door is obtained;

[0042] Step S5, processing the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door to obtain the dynamic deformation amount of the vehicle door.

[0043] In this embodiment, in the step S1, the pressure sensor measures the electrical signal of the pressure distribution of the sealing strip when the door is in motion in real time, and converts the electrical signal into pressure distribution data through the data processor.

[0044] In this embodiment, in the step S1, the pressure sensor is a thin film sensor with a thickness of 0.1 mm.

[0045] In this embodiment, in the step S1, the front side of the pressure sensor faces the sealing strip.

[0046] In this implementation manner, in the step S1, the sealing strip is located at the center of the pressure sensor.

[0047] In this embodiment, in step S1, the dynamic contact width and compression load test of the sealing strip is performed under a variety of dynamic working conditions.

[0048] In this embodiment, in the step S5, the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door are processed as arithmetic mean values.

[0049] The present embodiment provides a vehicle door dynamic deformation testing and analysis system, the system comprising the following modules:

[0050] Sealing module: stick the pressure sensor on the sealing strip corresponding to the position to be tested on the door, close the door to the locked state, and perform static contact width and compression load tests on the sealing strip as well as dynamic contact width and compression load tests on the sealing strip;

[0051] The simulation module intercepts the contact width of the sealing strip and the compression load test position, obtains the cross section of the sealing strip and the contact structure, establishes a finite element simulation model of the sealing strip, performs a compression deformation simulation test of the sealing strip, and obtains the corresponding relationship between the contact width of the sealing strip and the compression amount, as well as the corresponding relationship between the compression load and the compression amount;

[0052] The contact module obtains the static compression and dynamic compression of the sealing strip according to the static contact width, dynamic contact width, and the corresponding relationship between the contact width and the compression, and then obtains the dynamic deformation X1 of the door;

[0053] The dynamic module obtains the static compression amount and dynamic compression amount of the sealing strip according to the corresponding relationship between the static compression load, dynamic compression load, compression load and compression amount of the sealing strip, and then obtains the dynamic deformation amount X2 of the door;

[0054] The analysis module processes the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door to obtain the dynamic deformation amount of the vehicle door.

[0055] An electronic device described in this embodiment includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0056] Memory, used to store computer programs;

[0057] The processor is used to implement any method step described in the above implementation mode when executing the program stored in the memory.

[0058] The present embodiment describes a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of the above embodiments are implemented.

[0059] This embodiment is based on a vehicle door dynamic deformation test and analysis method according to the present invention, combined with Figure 1 To better understand this implementation, a practical implementation is provided:

[0060] Principle of the method:

[0061] ① Use a thin film pressure distribution test system to obtain the contact width and compression load information of the automobile door sealing strip under static and dynamic conditions.

[0062] ② The compression deformation analysis of the sealing strip is carried out through simulation method to obtain the corresponding relationship between the contact width and compression amount of the automobile door sealing strip, and the corresponding relationship between the compression load and compression amount.

[0063] ③ According to the contact width, compression load, corresponding relationship between contact width and compression amount, and corresponding relationship between compression load and compression amount of the actual test of the sealing strip, the dynamic deformation of the sealing strip corresponding to the door position is obtained.

[0064] Detailed method:

[0065] (1) Figure 2 As shown, the pressure distribution test system includes a pressure sensor and a data processor. The pressure sensor can measure the electrical signal of the pressure distribution of the sealing strip in real time when the door is in motion, and convert the electrical signal into pressure distribution data through the data processor. The pressure sensor is a thin film sensor with a thickness of 0.1 mm. The influence on the state of the sealing strip during the test can be ignored.

[0066] (2) Figure 3 As shown, perform the static contact width and compression load test of the sealing strip. Use tape to stick the pressure sensor on the sealing strip corresponding to the test position of the door, so that the front of the pressure sensor faces the direction of the sealing strip, ensure that the sealing strip is located at the center of the pressure sensor, and then close the door to the fully locked state. Measure the static contact width and compression load of the sealing strip.

[0067] (3) Conduct dynamic contact width and compression load tests on the sealing strip. According to test requirements, tests can be conducted under various dynamic conditions such as wind tunnels and road driving to measure the dynamic contact width and compression load of the sealing strip.

[0068] (4) Simulation of compression deformation of sealing strips: The contact width of the sealing strips and the compression load test positions are intercepted to obtain the cross-section of the sealing strips and related contact structures. A finite element simulation model of the sealing strips is established in combination with material parameters and boundary conditions (the establishment of the specific simulation model is a prior art and will not be described here). The compression deformation simulation of the sealing strips is performed to obtain the corresponding relationship between the contact width of the sealing strips and the compression amount, and the corresponding relationship between the compression load and the compression amount.

[0069] (5) Figure 4 As shown, according to the corresponding relationship between the static contact width, dynamic contact width, contact width and compression of the sealing strip, the static compression and dynamic compression of the sealing strip are obtained, and then the dynamic deformation X1 of the door is obtained. Figure 5 As shown, according to the corresponding relationship between the static compression load, dynamic compression load, compression load and compression amount of the sealing strip, the static compression amount and dynamic compression amount of the sealing strip are obtained, and then the dynamic deformation amount X2 of the door is obtained. The arithmetic average of the dynamic deformation amount X1 and the dynamic deformation amount X2 is the dynamic deformation amount of the door.

[0070] The above is a detailed introduction to the automobile door dynamic deformation testing and analysis method, system, equipment and storage medium proposed in the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for testing and analyzing the dynamic deformation of a vehicle door, characterized in that: The following steps are involved: Step S1, sticking a pressure sensor on a sealing strip corresponding to a position to be tested on a vehicle door, closing the vehicle door to a locked state, and performing a sealing strip static contact width and compression load test as well as a sealing strip dynamic contact width and compression load test; Step S2, intercepting the sealing strip contact width and compression load test position, obtaining the cross section of the sealing strip and the contact structure, establishing a sealing strip finite element simulation model, performing a sealing strip compression deformation simulation test, and obtaining the corresponding relationship between the sealing strip contact width and the compression amount, and the corresponding relationship between the compression load and the compression amount; Step S3, obtaining the static compression amount and dynamic compression amount of the sealing strip according to the static contact width, dynamic contact width, contact width and compression amount correspondence of the sealing strip, and then obtaining the dynamic deformation amount X1 of the door; Step S4, according to the static compression load, dynamic compression load, compression load and compression amount correspondence of the sealing strip, the static compression amount and dynamic compression amount of the sealing strip are obtained, and then the dynamic deformation amount X2 of the vehicle door is obtained; Step S5, processing the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door to obtain the dynamic deformation amount of the vehicle door.

2. A method for testing and analyzing the dynamic deformation of a vehicle door according to claim 1, characterized in that: In the step S1, the pressure sensor measures the electrical signal of the pressure distribution of the sealing strip when the door is in motion in real time, and converts the electrical signal into pressure distribution data through the data processor.

3. The method for testing and analyzing the dynamic deformation of a vehicle door according to claim 1, characterized in that: In the step S1, the pressure sensor is a thin film sensor with a thickness of 0.1 mm.

4. The method for testing and analyzing the dynamic deformation of a vehicle door according to claim 1, characterized in that: In the step S1, the front side of the pressure sensor faces the sealing strip.

5. The method for testing and analyzing the dynamic deformation of a vehicle door according to claim 1, characterized in that: In the step S1, the sealing strip is located at the center of the pressure sensor.

6. The method for testing and analyzing the dynamic deformation of a vehicle door according to claim 1, characterized in that: In the step S1, the dynamic contact width and compression load test of the sealing strip is performed under a variety of dynamic working conditions.

7. The method for testing and analyzing the dynamic deformation of a vehicle door according to claim 1, characterized in that: In the step S5, the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door are processed into an arithmetic mean value.

8. A vehicle door dynamic deformation testing and analysis system, characterized in that: The system includes the following modules: Sealing module: stick the pressure sensor on the sealing strip corresponding to the position to be tested on the door, close the door to the locked state, and perform static contact width and compression load tests on the sealing strip as well as dynamic contact width and compression load tests on the sealing strip; The simulation module intercepts the contact width of the sealing strip and the compression load test position, obtains the cross section of the sealing strip and the contact structure, establishes a finite element simulation model of the sealing strip, performs a compression deformation simulation test of the sealing strip, and obtains the corresponding relationship between the contact width of the sealing strip and the compression amount, as well as the corresponding relationship between the compression load and the compression amount; The contact module obtains the static compression and dynamic compression of the sealing strip according to the static contact width, dynamic contact width, and the corresponding relationship between the contact width and the compression, and then obtains the dynamic deformation X1 of the door; The dynamic module obtains the static compression amount and dynamic compression amount of the sealing strip according to the corresponding relationship between the static compression load, dynamic compression load, compression load and compression amount of the sealing strip, and then obtains the dynamic deformation amount X2 of the door; The analysis module processes the dynamic deformation amount X1 of the vehicle door and the dynamic deformation amount X2 of the vehicle door to obtain the dynamic deformation amount of the vehicle door.

9. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, for implementing the method steps described in any one of claims 1 to 7 when executing a program stored in a memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 1 to 7 are implemented.

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