CN117034438A - Rigidity calculation method, system, storage medium and equipment for vehicle engine cover - Google Patents
Rigidity calculation method, system, storage medium and equipment for vehicle engine cover Download PDFInfo
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- 238000004364 calculation method Methods 0.000 title abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 81
- 238000004088 simulation Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims description 23
- 238000004590 computer program Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
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- 229910000831 Steel Inorganic materials 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
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- 229920001821 foam rubber Polymers 0.000 description 1
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- 239000013307 optical fiber Substances 0.000 description 1
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- G—PHYSICS
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- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention provides a rigidity calculation method, a system, a storage medium and equipment of a vehicle engine cover, wherein the method comprises the following steps: establishing a vehicle simulation model, performing range constraint on the vehicle simulation model, obtaining a target test area in the vehicle simulation model, wherein the target test area comprises a first rear hood Liang Hedi rear hood girder, selecting a test point on one of the first rear hood Liang Hedi rear hood girders, applying a vertical load to the test point, obtaining vertical load data, forming vertical deformation on the other of the first rear hood Liang Hedi rear hood girders according to the applied vertical load, and obtaining vertical deformation data, so as to calculate rigidity data of the target test area according to the vertical load data and the vertical deformation data. The calculation method can obtain the rigidity data of the back beam of the engine cover, thereby perfecting the test mode of the engine cover and ensuring the integral performance of the engine cover.
Description
Technical Field
The invention relates to the technical field of vehicle part data calculation, in particular to a method, a system, a storage medium and equipment for calculating rigidity of a vehicle engine cover.
Background
The engine cover is used as a part on a vehicle and is usually made of rubber foam and aluminum foil materials, and when engine noise is reduced, heat generated during engine operation can be isolated at the same time.
At present, the evaluation mode of the engine cover mainly tests the bending rigidity, the torsional rigidity and the lateral rigidity of the engine cover, when the engine cover is completely opened, the bending rigidity applies a vertical load on the front end, and the measuring point is consistent with the loading point so as to evaluate the bending rigidity performance of the engine cover; the torsional rigidity is mainly characterized in that a vertical load is applied to a left buffer block at the front end of the engine cover, a right buffer block constrains the Z direction, and the front angle of a point at the left side is measured to evaluate the torsional rigidity performance of the engine cover; the lateral rigidity is that after the engine cover is opened by a certain angle, a lateral load is applied to the left side of the front angle, and a measuring point is arranged at the front angle of the right side, so as to evaluate the lateral rigidity of the engine cover.
However, only part of the performance of the engine cover can be tested in the test mode, the engine cover also comprises an engine cover back beam, the rigidity of the engine cover back beam directly influences the overall performance of the engine cover, and if the rigidity of the engine cover back beam is insufficient, the bending resistance and the sealing capacity of the engine cover can be reduced, so that noise in a vehicle can be generated, and the performance of the whole vehicle is seriously influenced.
Disclosure of Invention
Based on the above, the invention aims to provide a method, a system, a storage medium and equipment for calculating the rigidity of a vehicle engine cover, which are used for solving the problems that in the prior art, the traditional test mode of the engine cover can only test part of the performance of the engine cover, the engine cover also comprises a rear engine cover beam, the rigidity of the rear engine cover beam directly influences the whole performance of the engine cover, and the conventional test mode lacks in calculating the rigidity of the rear engine cover beam.
According to the embodiment of the invention, the method for calculating the rigidity of the vehicle engine cover comprises the following steps:
acquiring a plurality of part parameters in a vehicle, performing finite element analysis according to the plurality of part parameters, and establishing a vehicle simulation model;
performing range constraint on the vehicle simulation model to obtain a target test area in the vehicle simulation model, wherein the target test area comprises a first engine hood back beam and a second engine hood back beam which is arranged opposite to the first engine hood back beam;
and selecting a test point on one of the first hood back beam and the second hood back beam, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on the other one of the first hood back beam and the second hood back beam according to the applied vertical load, and acquiring vertical deformation data, so as to calculate rigidity data of the target test area according to the vertical load data and the vertical deformation data.
In addition, the method for calculating the rigidity of the vehicle hood according to the above embodiment of the present invention may further have the following additional technical features:
further, in the step of calculating the rigidity data of the target test area from the vertical load data and the vertical deformation data, a formula for calculating the rigidity data is:
wherein K is the rigidity data, F is the vertical load data, and D is the vertical deformation data.
Further, in the step of performing range constraint on the vehicle simulation model to obtain a target test area in the vehicle simulation model, the range constraint includes taking an a-pillar hood hinge in the vehicle simulation model as a preset starting point, and extending along the middle of a vehicle body from the preset starting point to obtain a front end area of the vehicle body;
limiting the degrees of freedom of the underbody and roof in the front end region of the vehicle body to form a first constraint;
limiting the degrees of freedom of the front ends of the vehicle body and the vehicle frame in the vehicle body front end region to form a second constraint;
limiting the degree of freedom of the front end weatherstrip in the front end region of the vehicle body to form a third constraint;
and acquiring the target test area in the vehicle simulation model according to the first constraint, the second constraint and the third constraint.
Further, in the step of acquiring a plurality of part parameters in the vehicle, the plurality of part parameters includes:
the engine cover assembly parameters, the vehicle body assembly parameters, the connection assembly parameters of the engine cover and the vehicle body, the material brand parameters, the welding spot position parameters, the rubber buffer block parameters between the engine cover and the vehicle body, and the sealing strip rigidity parameters;
wherein the material grade parameters comprise a bonnet material grade parameter and a vehicle body material grade parameter.
Further, discretizing grid division is performed according to the engine cover assembly parameters and the vehicle body assembly parameters, and middle planes are respectively extracted from the engine cover and the vehicle body, grid division is performed by selecting plane grid units on the middle planes, and simulation connection is performed on the engine cover and the vehicle body according to the engine cover material grade parameters, the vehicle body material grade parameters and the welding spot position parameters, and the rubber buffer block parameters between the engine cover and the vehicle body and the sealing strip rigidity parameters so as to establish the vehicle simulation model according to the engine cover and the vehicle body.
Further, the first bonnet back beam is an inner plate back beam of the bonnet, and the first bonnet back beam is an outer plate back beam of the bonnet;
and selecting a test point on the first engine hood back beam, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on the second engine hood back beam according to the applied vertical load, and acquiring vertical deformation data, so as to calculate the rigidity data of the target test area according to the vertical load data and the vertical deformation data.
Further, in the step of forming vertical deformation on the second hood back according to the applied vertical load and acquiring vertical deformation data, the vertical deformation data is the maximum vertical deformation data of the test point;
and calculating the rigidity data of the target test area according to the vertical load data and the maximum vertical deformation data.
A vehicle hood computing system according to an embodiment of the invention, the system comprising:
the model building module is used for carrying out finite element analysis on the vehicle and building a vehicle simulation model;
the model constraint module is used for performing range constraint on the vehicle simulation model to obtain a target test area in the vehicle simulation model, wherein the target test area comprises a first engine hood back beam and a second engine hood back beam which is arranged opposite to the first engine hood back beam;
the computing module is used for selecting a test point on one of the first engine hood back beam and the second engine hood back beam, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on the other one of the first engine hood back beam and the second engine hood back beam according to the applied vertical load, and acquiring vertical deformation data, so as to compute the rigidity data of the target test area according to the vertical load data and the vertical deformation data.
The present invention also proposes a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described vehicle hood stiffness calculation method.
The invention also provides a computing device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the method for computing the stiffness of the vehicle bonnet as described above.
Compared with the prior art: according to the method, the range constraint is carried out on the basis of an established vehicle simulation model, so that a target test area is obtained, the target test area comprises a first rear engine hood beam and a second rear engine hood beam which is arranged opposite to the first rear engine hood beam, a test point is selected on one of the rear engine hood beams of the first rear engine hood Liang Hedi, vertical load is applied to the test point, vertical load data are obtained, vertical deformation is formed on the other one of the rear engine hood beams of the first rear engine hood Liang Hedi, vertical deformation data are obtained, and the rigidity data of a target test area are calculated according to the vertical load data and the vertical deformation data.
Drawings
FIG. 1 is a flow chart of a method of calculating stiffness of a vehicle hood in an embodiment of the present invention;
FIG. 2 is a schematic illustration of a vehicle simulation model of the present invention;
FIG. 3 is a schematic view of the range constraints of the vehicle simulation model of the present invention;
FIG. 4 is a schematic diagram of a test point according to the present invention;
FIG. 5 is a schematic illustration of a vertical variation of the present invention;
FIG. 6 is a schematic diagram of a vehicle hood computing system in accordance with an embodiment of the invention;
FIG. 7 is a schematic diagram of a computing device in an embodiment of the invention.
The following detailed description will further illustrate the invention with reference to the above-described drawings.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
First embodiment
Referring to fig. 1, a method for calculating rigidity of a vehicle hood according to a first embodiment of the present invention may be implemented by software and/or hardware, and the method specifically includes steps S01-S03.
Step S01, acquiring a plurality of part parameters in a vehicle, carrying out finite element analysis according to the plurality of part parameters, and establishing a vehicle simulation model;
in some alternative embodiments, the plurality of part parameters includes, but is not limited to, a hood assembly parameter, a body assembly parameter, a hood-to-body connection assembly parameter, a material brand parameter, a weld location parameter, a rubber bumper between the hood and the body parameter, a bead stiffness parameter;
the material grade parameters include a bonnet material grade parameter and a car body material grade parameter, the material grade is also called as a steel product grade, and a method for representing the name, the purpose, the characteristic and the process of the steel product by combining Chinese phonetic letters, chemical element symbols and Arabic numerals is generally adopted.
In some practical cases, the method can process in Hypermesh software according to a plurality of acquired part parameters, specifically, discretized mesh division is performed according to engine cover assembly parameters and vehicle body assembly parameters, middle surfaces are respectively extracted on an engine cover and a vehicle body, mesh division is performed on the middle surfaces by selecting surface mesh units, meanwhile, material properties and part thickness are given, and through a spot unit and a CBEAM unit in the Hypermesh software, the engine cover and the vehicle body are subjected to simulated connection according to engine cover material grade parameters, vehicle body material grade parameters and welding spot position parameters, rubber buffer block parameters and sealing strip rigidity parameters between the engine cover and the vehicle body, so that a vehicle simulation model can be established, and the method is shown in fig. 2.
Step S02, range constraint is carried out on the vehicle simulation model, and a target test area in the vehicle simulation model is obtained, wherein the target test area comprises a first engine hood back beam and a second engine hood back beam which is arranged opposite to the first engine hood back beam.
After the vehicle simulation model is built, performing range constraint on the vehicle simulation model, wherein the range constraint comprises the steps of taking an A-pillar engine hood hinge in the vehicle simulation model as a preset starting point, and extending the preset starting point along the middle of the vehicle body to obtain a front end region of the vehicle body;
limiting the degrees of freedom of the underbody and roof in the front end region of the vehicle body to form a first constraint;
limiting the degrees of freedom of the front ends of the vehicle body and the vehicle frame in the front end region of the vehicle body to form a second constraint;
limiting the degree of freedom of the front end weatherstrip in the vehicle body front end region to form a third constraint;
and acquiring a target test area in the vehicle simulation model according to the first constraint, the second constraint and the third constraint.
For the sake of understanding how the present disclosure may be used to constrain a vehicle simulation model, please refer to fig. 3, which illustrates a front end region of a vehicle body, that is, a front end of the vehicle body, from a front to a rear at least 300mm from an a-pillar hood hinge of the vehicle simulation model;
referring to fig. 4, the degrees of freedom 123456 (3 translational and 3 rotational directions) of the cut ends of the cut body floor and roof are limited to form a first constraint;
restricting the degree of freedom 123456 (3 translational directions and 3 rotational directions) of the first row of connection points (the head direction) between the vehicle body and the vehicle frame in the front end region of the vehicle body so as to form a second constraint;
limiting the front-end weatherstrip body-side degrees of freedom 123456 (3 translational and 3 rotational directions) to form a second constraint;
while at the exact center of the hood back rail (y=0), a target test area of 25 x 25mm was created.
That is, the target test area is an area for testing the hood back rail, and includes a first hood back rail and a second hood back rail disposed opposite the first hood back rail.
Step S03, selecting a test point on one of the two rear hood beams of the first rear hood Liang Hedi, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on the other one of the two rear hood beams of the first rear hood Liang Hedi according to the applied vertical load, and acquiring vertical deformation data, so as to calculate rigidity data of a target test area according to the vertical load data and the vertical deformation data.
In some alternative embodiments, the first hood back rail is an inner panel back rail of the hood, the first hood back rail is an outer panel back rail of the hood;
the method comprises the steps of selecting a test point on a first engine cover rear beam, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on a second engine cover rear beam according to the applied vertical load, acquiring vertical deformation data, calculating rigidity data of a target test area according to the vertical load data and the vertical deformation data, wherein the vertical deformation data can be maximum vertical deformation data of the test point, and calculating rigidity data of the target test area according to the vertical load data and the maximum vertical deformation data.
Wherein, the formula for calculating the rigidity data is:
wherein K is rigidity data, F is vertical load data, and D is vertical deformation data.
For the sake of understanding, please refer to fig. 4, which shows that a test point is selected from the first hood rear beam in the target test area, and a vertical load is applied to the test point, wherein the vertical load applies a force of 300N in a direction of Z-direction, and it should be noted that 300N is vertical load data (node 1 in the figure is the test point);
meanwhile, deformation is generated on the rear beam of the second engine cover, and vertical deformation data of the deformation are recorded, wherein in a practical situation, as shown in fig. 5, Y=0 is 10mm away from the rear edge of the engine cover, and the maximum deformation value in the Z direction is shown in a node 2.
And calculating the vertical load data and the vertical deformation data to obtain the rigidity data of the back beam of the engine cover.
In summary, in the method for calculating the rigidity of the vehicle hood according to the foregoing embodiment of the present invention, by providing a method for calculating the rigidity of the vehicle hood, and using range constraint based on an established vehicle simulation model, a target test area is obtained, where the target test area includes a first hood back beam and a second hood back beam disposed opposite to the first hood back beam, and by selecting a test point on one of the first hood back Liang Hedi and the second hood back beam, a vertical load is applied to the test point, and vertical load data is obtained, so that vertical deformation is formed on the other of the first hood back Liang Hedi and the second hood back beam, and vertical deformation data is obtained, and rigidity data of a target test area is calculated according to the vertical load data and the vertical deformation data.
Second embodiment
In another aspect, referring to fig. 6, a vehicle hood computing system according to a second embodiment of the present invention is shown, the vehicle hood computing system includes:
the data acquisition module 11 is used for carrying out finite element analysis on the vehicle and establishing a vehicle simulation model;
the model constraint module 12 is used for performing range constraint on the vehicle simulation model to obtain a target test area in the vehicle simulation model, wherein the target test area comprises a first engine hood back beam and a second engine hood back beam which is arranged opposite to the first engine hood back beam;
the calculating module 13 is configured to select a test point on one of the two rear hood beams of the first rear hood Liang Hedi, apply a vertical load to the test point, obtain vertical load data, form vertical deformation on the other one of the two rear hood beams of the first rear hood Liang Hedi according to the applied vertical load, and obtain vertical deformation data, so as to calculate rigidity data of the target test area according to the vertical load data and the vertical deformation data.
Wherein, the formula for calculating the rigidity data is:
wherein K is rigidity data, F is vertical load data, and D is vertical deformation data.
The functions or operation steps implemented when the above modules and units are executed are substantially the same as those in the above method embodiments, and are not described herein again.
Third embodiment
In another aspect, referring to fig. 7, a computing device according to a third embodiment of the present invention includes a memory 20, a processor 10, and a computer program 30 stored on the memory and capable of running on the processor, where the processor 10 implements a method for calculating stiffness of a vehicle hood according to the above-mentioned method when executing the computer program 30.
The computing device may be a computer, a computing device, etc., and the processor 10 may be a central processing unit (CentralProcessingUnit, CPU), a controller, a microcontroller, a microprocessor, or other data processing chip in some embodiments, for executing program code or processing data stored in the memory 20, such as executing an access restriction program, etc.
The memory 20 includes at least one type of readable storage medium including flash memory, a hard disk, a multimedia card, a card memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. Memory 20 may be an internal storage unit of a computing device, such as a hard disk of the computing device, in some embodiments. The memory 20 may also be external storage of the computing device in other embodiments, such as a plug-in hard disk provided on the computing device, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), or the like. Further, the memory 20 may also include both internal storage units and external storage of the computing device. The memory 20 may be used not only to store application software installed on a computing device and various types of data, but also to temporarily store data that has been output or is to be output.
It should be noted that the structure shown in fig. 3 is not limiting of the computing device, and in other embodiments, the computing device may include fewer or more components than shown, or may combine certain components, or may have a different arrangement of components.
The embodiment of the invention also proposes a computer-readable storage medium on which a computer program is stored which, when executed by a processor, implements a method for calculating the stiffness of a vehicle hood as described above.
Those of skill in the art will appreciate that the logic or steps represented in the flow diagrams or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable storage medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, including a processor system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium upon which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A method of calculating stiffness of a vehicle hood, the method comprising:
acquiring a plurality of part parameters in a vehicle, performing finite element analysis according to the plurality of part parameters, and establishing a vehicle simulation model;
performing range constraint on the vehicle simulation model to obtain a target test area in the vehicle simulation model, wherein the target test area comprises a first engine hood back beam and a second engine hood back beam which is arranged opposite to the first engine hood back beam;
and selecting a test point on one of the first hood back beam and the second hood back beam, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on the other one of the first hood back beam and the second hood back beam according to the applied vertical load, and acquiring vertical deformation data, so as to calculate rigidity data of the target test area according to the vertical load data and the vertical deformation data.
2. The rigidity calculating method of vehicle hood according to claim 1, wherein in the step of calculating rigidity data of the target test area from the vertical load data and the vertical deformation data, a formula for calculating the rigidity data is:
wherein K is the rigidity data, F is the vertical load data, and D is the vertical deformation data.
3. The vehicle hood rigidity calculating method according to claim 1, characterized in that, in the step of obtaining the target test area in the vehicle simulation model by performing a range constraint on the vehicle simulation model, the range constraint includes extending from a-pillar hood hinges in the vehicle simulation model along a middle portion of a vehicle body with the preset starting point as a preset starting point to obtain a vehicle body front end area;
limiting the degrees of freedom of the underbody and roof in the front end region of the vehicle body to form a first constraint;
limiting the degrees of freedom of the front ends of the vehicle body and the vehicle frame in the vehicle body front end region to form a second constraint;
limiting the degree of freedom of the front end weatherstrip in the front end region of the vehicle body to form a third constraint;
and acquiring the target test area in the vehicle simulation model according to the first constraint, the second constraint and the third constraint.
4. The vehicle hood rigidity calculating method according to claim 1, wherein in the step of acquiring a plurality of part parameters in the vehicle, the plurality of part parameters include:
the engine cover assembly parameters, the vehicle body assembly parameters, the connection assembly parameters of the engine cover and the vehicle body, the material brand parameters, the welding spot position parameters, the rubber buffer block parameters between the engine cover and the vehicle body, and the sealing strip rigidity parameters;
wherein the material grade parameters comprise a bonnet material grade parameter and a vehicle body material grade parameter.
5. The method for calculating the rigidity of a vehicle hood according to claim 4, characterized in that discretized meshing is performed according to the hood assembly parameter and the vehicle body assembly parameter, a middle plane is extracted on the hood and the vehicle body respectively, meshing is performed on the middle plane by selecting a plane mesh unit, and a simulated connection is performed on the hood and the vehicle body according to the hood material grade parameter, the vehicle body material grade parameter and the welding spot position parameter, and a rubber buffer block parameter between the hood and the vehicle body and the sealing strip rigidity parameter are performed so as to establish the vehicle simulation model according to the hood and the vehicle body.
6. The vehicle hood rigidity calculating method according to claim 1, wherein the first hood back is an inner panel back of a hood, and the first hood back is an outer panel back of a hood;
and selecting a test point on the first engine hood back beam, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on the second engine hood back beam according to the applied vertical load, and acquiring vertical deformation data, so as to calculate the rigidity data of the target test area according to the vertical load data and the vertical deformation data.
7. The vehicle hood rigidity calculating method according to claim 6, wherein in the step of forming a vertical deformation on the second hood back according to the applied vertical load and acquiring vertical deformation data, the vertical deformation data is maximum vertical deformation data of the test point;
and calculating the rigidity data of the target test area according to the vertical load data and the maximum vertical deformation data.
8. A vehicle hood computing system, the system comprising:
the model building module is used for carrying out finite element analysis on the vehicle and building a vehicle simulation model;
the model constraint module is used for performing range constraint on the vehicle simulation model to obtain a target test area in the vehicle simulation model, wherein the target test area comprises a first engine hood back beam and a second engine hood back beam which is arranged opposite to the first engine hood back beam;
the computing module is used for selecting a test point on one of the first engine hood back beam and the second engine hood back beam, applying a vertical load to the test point, acquiring vertical load data, forming vertical deformation on the other one of the first engine hood back beam and the second engine hood back beam according to the applied vertical load, and acquiring vertical deformation data, so as to compute the rigidity data of the target test area according to the vertical load data and the vertical deformation data.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the rigidity calculating method of a vehicle hood according to any one of claims 1 to 7.
10. A computing device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the method of computing stiffness of a vehicle hood according to any one of claims 1-7 when the program is executed by the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310765542.7A CN117034438A (en) | 2023-06-27 | 2023-06-27 | Rigidity calculation method, system, storage medium and equipment for vehicle engine cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310765542.7A CN117034438A (en) | 2023-06-27 | 2023-06-27 | Rigidity calculation method, system, storage medium and equipment for vehicle engine cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117034438A true CN117034438A (en) | 2023-11-10 |
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