CN116382119A - Impact simulation method and device of domain controller and electronic equipment - Google Patents
Impact simulation method and device of domain controller and electronic equipment Download PDFInfo
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Abstract
The invention provides an impact simulation method and device of a domain controller and electronic equipment, wherein the impact simulation method comprises the following steps: in finite element software, preprocessing a domain controller model; simulating a process of applying bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force; in the display solver, impact load is applied to the position of the mounting hole of the preprocessed domain controller model, and the domain controller simulation result under the action of bolt pretightening force is called, so that the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load are simulated and calculated. In the method, when impact load is applied to perform impact simulation calculation, the effect of the bolt pretightening force is considered, so that the problem of stress intensity of each part of the domain controller model in the impact process can be reflected more truly, and the impact simulation precision is improved.
Description
Technical Field
The present invention relates to the field of impact simulation technologies, and in particular, to an impact simulation method and apparatus for a domain controller, and an electronic device.
Background
In conditions such as bumpy road conditions, sudden braking, collision and the like, an automobile is often subjected to impact load from the outside, so that electronic products such as an automobile in-field controller and the like need to consider the reliability of the products after the impact working condition.
At present, most impact check in the industry comes from simulation verification, but the pretension effect generated by the pretension force of the bolt of a product is not considered in the impact simulation process, and is generally simplified into rigid connection or beam unit connection, so that whether the fastener slides in the impact process or not cannot be considered, the influence of the initial stress of the bolt on the result cannot be considered, and the impact simulation device is inconsistent with the stress of an actual domain controller, and has lower simulation precision.
In summary, the existing impact simulation method of the domain controller has the technical problem of low simulation precision.
Disclosure of Invention
In view of the above, the present invention aims to provide a method, an apparatus and an electronic device for impact simulation of a domain controller, so as to alleviate the technical problem of low simulation precision of the existing impact simulation method of the domain controller.
In a first aspect, an embodiment of the present invention provides an impact simulation method for a domain controller, including:
in finite element software, constructing a domain controller model, and preprocessing the domain controller model to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model;
simulating a process of applying bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force;
and in the display solver of the finite element software, copying the preprocessed domain controller model, applying impact load to the mounting hole position of the preprocessed domain controller model, and calling the domain controller simulation result under the action of the bolt pretightening force, so as to simulate and calculate the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
Further, preprocessing the domain controller model, including:
simplifying the domain controller model to obtain a simplified domain controller model;
performing grid division on the domain controller model after the simplification processing to obtain a domain controller model after grid division;
establishing connection relation of all the components of the domain controller model after grid division, and giving material parameters to all the components to obtain the domain controller model after pretreatment.
Further, the simulation result of the domain controller under the action of the bolt pretightening force comprises: and a stress result under the action of the bolt pretightening force and a displacement result under the action of the bolt pretightening force.
Further, the method further comprises:
and determining whether the domain controller model can bear the impact load based on a displacement result and a stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
Further, determining whether the domain controller model can withstand the impact load based on the displacement results and the stress results of the domain controller model under the action of the bolt pretightening force and the impact load comprises:
if the displacement result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than a preset displacement threshold value, determining that the domain controller model cannot bear the action of the impact load, and further adjusting the assembly parameters of the bolts in the corresponding domain controllers;
and if the stress result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than the preset stress threshold value of the corresponding part, determining that the domain controller model cannot bear the action of the impact load.
Further, the assembly parameters include: the number of bolts and the type of bolts.
In a second aspect, an embodiment of the present invention further provides an impact simulation apparatus for a domain controller, including:
the domain controller model is constructed in finite element software, and is preprocessed to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model;
the simulation solving unit is used for simulating the process of applying the bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force;
and the impact simulation unit is used for copying the preprocessed domain controller model in the display solver of the finite element software, applying impact load at the position of the mounting hole of the preprocessed domain controller model, calling the domain controller simulation result under the action of the bolt pretightening force, and further simulating and calculating the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
Further, the construction and pre-processing unit is further configured to:
simplifying the domain controller model to obtain a simplified domain controller model;
performing grid division on the domain controller model after the simplification processing to obtain a domain controller model after grid division;
establishing connection relation of all the components of the domain controller model after grid division, and giving material parameters to all the components to obtain the domain controller model after pretreatment.
In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the method according to any one of the first aspects when the processor executes the computer program.
In a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium storing machine-executable instructions which, when invoked and executed by a processor, cause the processor to perform the method of any one of the first aspects.
In an embodiment of the present invention, there is provided an impact simulation method for a domain controller, including: in finite element software, constructing a domain controller model, and preprocessing the domain controller model to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model; simulating a process of applying bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force; in a finite element software display solver, copying a preprocessed domain controller model, applying impact load at the position of a mounting hole of the preprocessed domain controller model, and calling a domain controller simulation result under the action of bolt pretightening force, so as to simulate and calculate a displacement result and a stress result of the domain controller model under the action of the bolt pretightening force and the impact load. According to the impact simulation method of the domain controller, the upper shell model, the PCB model and the lower shell model in the domain controller model are connected through the bolt model, so that the impact simulation method is more in line with the actual situation, in addition, the effect of the bolt pretightening force is considered when impact load is applied to perform impact simulation calculation, the problem of stress intensity of each part of the domain controller model in the impact process can be reflected more truly, the impact simulation precision is improved, and the technical problem of low simulation precision of the impact simulation method of the existing domain controller is solved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for impact simulation of a domain controller according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an impact simulation device of a domain controller according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The impact simulation method of the existing domain controller has low simulation precision.
Based on the above, in the impact simulation method of the domain controller, the upper shell model, the PCB model and the lower shell model in the domain controller model are connected through the bolt model, so that the impact simulation method is more in line with the actual situation, in addition, when impact load is applied to perform impact simulation calculation, the effect of the bolt pretightening force is considered, the problem of stress intensity of each part of the domain controller model in the impact process can be reflected more truly, and the impact simulation precision is improved
For the convenience of understanding the present embodiment, a detailed description will be given of an impact simulation method of a domain controller disclosed in the embodiment of the present invention.
Embodiment one:
in accordance with an embodiment of the present invention, there is provided an embodiment of a method of impact simulation of a domain controller, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and that, although a logical sequence is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in a different order than that illustrated herein.
FIG. 1 is a flow chart of a method of impact simulation of a domain controller according to an embodiment of the present invention, as shown in FIG. 1, the method comprising the steps of:
step S102, constructing a domain controller model in finite element software, and preprocessing the domain controller model to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model;
in an embodiment of the present invention, the preprocessing may include: simplifying the processing, meshing, establishing the connection relation of each component and giving the material parameters to each component, and the preprocessing process is described in detail hereinafter and will not be repeated here.
Step S104, simulating a process of applying bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force;
specifically, an implicit analysis step is established. The method specifically comprises the steps of applying bolt pretightening force to a preprocessed domain controller model, setting field output and historical variable output, and outputting a stress result under the action of the bolt pretightening force and a displacement result under the action of the bolt pretightening force, so as to obtain a domain controller simulation result under the action of the bolt pretightening force, wherein the stress result under the action of the bolt pretightening force and the displacement result under the action of the bolt pretightening force can be the stress result and the displacement result of each component under the action of the bolt pretightening force, such as the stress result and the displacement result of an upper shell under the action of the bolt pretightening force, the stress result and the displacement result of a PCB under the action of the bolt pretightening force, and the stress result and the displacement result of a lower shell under the action of the bolt pretightening force.
And S106, copying the preprocessed domain controller model in a display solver of finite element software, applying impact load at the position of a mounting hole of the preprocessed domain controller model, and calling a domain controller simulation result under the action of bolt pretightening force, so as to simulate and calculate a displacement result and a stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
Specifically, in a display solver of finite element software, the domain controller model after preprocessing is copied, and a display dynamic analysis step is established. The method specifically comprises the steps of establishing an impact working condition analysis step, namely applying impact load at the position of a mounting hole of a preprocessed domain controller model, setting an initial prestress field, namely calling a domain controller simulation result under the action of bolt pretightening force, and loading a stress result and a displacement result under the action of the bolt pretightening force into an impact simulation analysis state.
In an embodiment of the present invention, there is provided an impact simulation method for a domain controller, including: in finite element software, constructing a domain controller model, and preprocessing the domain controller model to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model; simulating a process of applying bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force; in a finite element software display solver, copying a preprocessed domain controller model, applying impact load at the position of a mounting hole of the preprocessed domain controller model, and calling a domain controller simulation result under the action of bolt pretightening force, so as to simulate and calculate a displacement result and a stress result of the domain controller model under the action of the bolt pretightening force and the impact load. According to the impact simulation method of the domain controller, the upper shell model, the PCB model and the lower shell model in the domain controller model are connected through the bolt model, so that the impact simulation method is more in line with the actual situation, in addition, the effect of the bolt pretightening force is considered when impact load is applied to perform impact simulation calculation, the problem of stress intensity of each part of the domain controller model in the impact process can be reflected more truly, the impact simulation precision is improved, and the technical problem of low simulation precision of the impact simulation method of the existing domain controller is solved.
The above-mentioned contents briefly introduce the impact simulation method of the domain controller of the present invention, and the detailed description will be made below with respect to the specific contents.
In an alternative embodiment of the present invention, the domain controller model is preprocessed, which specifically includes the following steps:
(1) Simplifying the domain controller model to obtain a simplified domain controller model;
specifically, in the simplified processing process, the micro chamfer feature of the geometric model part is eliminated.
(2) Performing grid division on the domain controller model after the simplification processing to obtain a domain controller model after grid division;
specifically, when grid division is performed, the regulation part is divided into hexahedral grids (hexahedral units are adopted by bolt unit types), the obvious position of the geometric feature is divided into second-order tetrahedral grids (simulation precision is guaranteed), and meanwhile, the minimum unit size of all units (namely, all parts, such as an upper shell, a PCB (printed circuit board) and a lower shell) is controlled, so that the dynamic simulation analysis efficiency is guaranteed (the smaller the minimum unit size is, the slower the simulation analysis speed is).
(3) And establishing connection relations of all the components of the domain controller model after grid division, and giving material parameters to all the components to obtain the domain controller model after pretreatment.
Specifically, according to the actual connection relation of each component of the domain controller, the connection relation of each component of the domain controller model after grid division is established. The upper shell and the lower shell are connected with the PCB through bolts, friction contact is established among the PCB, the upper shell and the lower shell and the nuts in simulation, the threaded parts of the bolts are simplified to be in binding contact with the lower shell, friction coefficients among all parts are set, and global universal contact is established.
Further, material parameters, such as elastic modulus, poisson's ratio, density, and material stretch curve data, are given to each component, specifically, to each component of the domain controller model.
In an alternative embodiment of the present invention, the simulation result of the domain controller under the action of the bolt pretightening force includes: and a stress result under the action of the bolt pretightening force and a displacement result under the action of the bolt pretightening force.
In an alternative embodiment of the invention, the method further comprises:
and determining whether the domain controller model can bear the impact load based on the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
Specifically, the simulation result of the impact working condition is evaluated based on the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the action of the impact load, and specifically, the simulation result is as follows:
(1) If the displacement result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than a preset displacement threshold value, determining that the domain controller model cannot bear the action of the impact load, and further adjusting the assembly parameters of the bolts in the corresponding domain controller;
specifically, a determination is made as to the deformation (i.e., displacement) result during the impact of the domain controller. The animation of the whole impact process of the domain controller is observed to see whether the bolt-tightening part (PCB board, water-cooled board, etc.) slides. In theory, sliding is not allowed, if sliding occurs, a chip and other fasteners on a PCB (printed circuit board) possibly collide with other components to damage the components such as the chips, so that the fact that the pre-tightening effect of the bolts is insufficient can be judged, the number of the bolts is increased, or the number of the bolts is increased (namely, the assembly parameters of the bolts in the corresponding domain controllers are adjusted), certain help is brought to bolt type selection, and when the bolts are simplified through rigid connection, the state cannot be considered, and the strength (namely, stress), deformation and the like deviate from the actual situation.
(2) If the stress result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than the preset stress threshold value of the corresponding part, determining that the domain controller model cannot bear the action of the impact load.
Specifically, the strength result in the impact process of the domain controller is judged. When the bolt pretightening force of the domain controller is considered in the impact process, the stress state of the nearby reinforcing ribs is more real, and the requirement that the strength (namely the stress result) of each part cannot exceed the ultimate strength (namely the preset stress threshold) of the material of the part is met.
In the impact simulation method of the domain controller, the influence of the pretightening force of the bolt is considered, whether the fastener can slip in the impact process is checked, the strength problem of the component in the impact process can be reflected more truly, and the simulation precision is improved.
Embodiment two:
the embodiment of the invention also provides an impact simulation device of the domain controller, which is mainly used for executing the impact simulation method of the domain controller provided in the first embodiment of the invention, and the impact simulation device of the domain controller provided in the embodiment of the invention is specifically introduced below.
FIG. 2 is a schematic diagram of an impact simulation apparatus of a domain controller according to an embodiment of the present invention, as shown in FIG. 2, the apparatus mainly includes: a build and pre-processing unit 10, an analog solving unit 20, and an impact simulation unit 30, wherein:
the domain controller model is constructed in finite element software, and is preprocessed to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model;
the simulation solving unit is used for simulating the process of applying the bolt pretightening force to the preprocessed domain controller model by adopting the implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force;
the impact simulation unit is used for copying the preprocessed domain controller model in the display solver of the finite element software, applying impact load at the position of the mounting hole of the preprocessed domain controller model, and calling the simulation result of the domain controller under the action of the bolt pretightening force so as to simulate and calculate the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
In an embodiment of the present invention, there is provided an impact simulation apparatus of a domain controller, including: in finite element software, constructing a domain controller model, and preprocessing the domain controller model to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model; simulating a process of applying bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force; in a finite element software display solver, copying a preprocessed domain controller model, applying impact load at the position of a mounting hole of the preprocessed domain controller model, and calling a domain controller simulation result under the action of bolt pretightening force, so as to simulate and calculate a displacement result and a stress result of the domain controller model under the action of the bolt pretightening force and the impact load. According to the impact simulation device of the domain controller, the upper shell model, the PCB model and the lower shell model in the domain controller model are connected through the bolt model, so that the impact simulation device is more in line with the actual situation, in addition, the effect of the bolt pretightening force is considered when impact load is applied to perform impact simulation calculation, the problem of stress intensity of each part of the domain controller model in the impact process can be reflected more truly, the impact simulation precision is improved, and the technical problem of low simulation precision of the impact simulation method of the existing domain controller is solved.
Optionally, the building and preprocessing unit is further configured to: simplifying the domain controller model to obtain a simplified domain controller model; performing grid division on the domain controller model after the simplification processing to obtain a domain controller model after grid division; and establishing connection relations of all the components of the domain controller model after grid division, and giving material parameters to all the components to obtain the domain controller model after pretreatment.
Optionally, the simulation result of the domain controller under the action of the bolt pretightening force comprises: and a stress result under the action of the bolt pretightening force and a displacement result under the action of the bolt pretightening force.
Optionally, the device is further configured to: and determining whether the domain controller model can bear the impact load based on the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
Optionally, the device is further configured to: if the displacement result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than a preset displacement threshold value, determining that the domain controller model cannot bear the action of the impact load, and further adjusting the assembly parameters of the bolts in the corresponding domain controller; if the stress result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than the preset stress threshold value of the corresponding part, determining that the domain controller model cannot bear the action of the impact load.
Optionally, the assembly parameters include: the number of bolts and the type of bolts.
The device provided by the embodiment of the present invention has the same implementation principle and technical effects as those of the foregoing method embodiment, and for the sake of brevity, reference may be made to the corresponding content in the foregoing method embodiment where the device embodiment is not mentioned.
As shown in fig. 3, an electronic device 600 provided in an embodiment of the present application includes: a processor 601, a memory 602 and a bus, said memory 602 storing machine readable instructions executable by said processor 601, said processor 601 communicating with said memory 602 via the bus when the electronic device is running, said processor 601 executing said machine readable instructions to perform the steps of the impact simulation method as described above for the domain controller.
Specifically, the above-described memory 602 and processor 601 can be general-purpose memories and processors, and are not particularly limited herein, and the above-described impact simulation method of the domain controller can be executed when the processor 601 runs a computer program stored in the memory 602.
The processor 601 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 601 or instructions in the form of software. The processor 601 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but may also be a digital signal processor (Digital Signal Processing, DSP for short), application specific integrated circuit (Application Specific Integrated Circuit, ASIC for short), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA for short), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 602, and the processor 601 reads information in the memory 602 and performs the steps of the above method in combination with its hardware.
Corresponding to the above-mentioned impact simulation method of the domain controller, the embodiments of the present application further provide a computer-readable storage medium storing machine-executable instructions, which when invoked and executed by a processor, cause the processor to execute the steps of the impact simulation method of the above-mentioned domain controller.
The impact simulation device of the domain controller provided by the embodiment of the application can be specific hardware on equipment or software or firmware installed on the equipment. The device provided in the embodiments of the present application has the same implementation principle and technical effects as those of the foregoing method embodiments, and for a brief description, reference may be made to corresponding matters in the foregoing method embodiments where the device embodiment section is not mentioned. It will be clear to those skilled in the art that, for convenience and brevity, the specific operation of the system, apparatus and unit described above may refer to the corresponding process in the above method embodiment, which is not described in detail herein.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
As another example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments provided in the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the vehicle marking method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It should be noted that: like reference numerals and letters in the following figures denote like items, and thus once an item is defined in one figure, no further definition or explanation of it is required in the following figures, and furthermore, the terms "first," "second," "third," etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application. Are intended to be encompassed within the scope of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of impact simulation of a domain controller, comprising:
in finite element software, constructing a domain controller model, and preprocessing the domain controller model to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model;
simulating a process of applying bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force;
and in the display solver of the finite element software, copying the preprocessed domain controller model, applying impact load to the mounting hole position of the preprocessed domain controller model, and calling the domain controller simulation result under the action of the bolt pretightening force, so as to simulate and calculate the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
2. The impact simulation method according to claim 1, wherein preprocessing the domain controller model includes:
simplifying the domain controller model to obtain a simplified domain controller model;
performing grid division on the domain controller model after the simplification processing to obtain a domain controller model after grid division;
establishing connection relation of all the components of the domain controller model after grid division, and giving material parameters to all the components to obtain the domain controller model after pretreatment.
3. The impact simulation method according to claim 1, wherein the simulation result of the domain controller under the action of the bolt pretightening force comprises: and a stress result under the action of the bolt pretightening force and a displacement result under the action of the bolt pretightening force.
4. The impact simulation method according to claim 1, wherein the method further comprises:
and determining whether the domain controller model can bear the impact load based on a displacement result and a stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
5. The impact simulation method of claim 4, wherein determining whether the domain controller model is capable of withstanding the impact load based on displacement results and stress results of the domain controller model under the bolt pretension and the impact load comprises:
if the displacement result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than a preset displacement threshold value, determining that the domain controller model cannot bear the action of the impact load, and further adjusting the assembly parameters of the bolts in the corresponding domain controllers;
and if the stress result of the domain controller model under the action of the bolt pretightening force and the action of the impact load is larger than the preset stress threshold value of the corresponding part, determining that the domain controller model cannot bear the action of the impact load.
6. The impact simulation method of claim 5, wherein the assembly parameters include: the number of bolts and the type of bolts.
7. An impact simulation apparatus of a domain controller, comprising:
the domain controller model is constructed in finite element software, and is preprocessed to obtain a preprocessed domain controller model, wherein the domain controller model comprises: the PCB comprises an upper shell model, a PCB model, a lower shell model and a bolt model, wherein the upper shell model, the PCB model and the lower shell model are connected through the bolt model;
the simulation solving unit is used for simulating the process of applying the bolt pretightening force to the preprocessed domain controller model by adopting an implicit solver to obtain a domain controller simulation result under the action of the bolt pretightening force;
and the impact simulation unit is used for copying the preprocessed domain controller model in the display solver of the finite element software, applying impact load at the position of the mounting hole of the preprocessed domain controller model, calling the domain controller simulation result under the action of the bolt pretightening force, and further simulating and calculating the displacement result and the stress result of the domain controller model under the action of the bolt pretightening force and the impact load.
8. The apparatus of claim 7, wherein the build and preprocess unit is further to:
simplifying the domain controller model to obtain a simplified domain controller model;
performing grid division on the domain controller model after the simplification processing to obtain a domain controller model after grid division;
establishing connection relation of all the components of the domain controller model after grid division, and giving material parameters to all the components to obtain the domain controller model after pretreatment.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of the preceding claims 1 to 6 when the computer program is executed.
10. A computer readable storage medium storing machine executable instructions which, when invoked and executed by a processor, cause the processor to perform the method of any one of the preceding claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310405402.9A CN116382119A (en) | 2023-04-14 | 2023-04-14 | Impact simulation method and device of domain controller and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310405402.9A CN116382119A (en) | 2023-04-14 | 2023-04-14 | Impact simulation method and device of domain controller and electronic equipment |
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| CN116382119A true CN116382119A (en) | 2023-07-04 |
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| CN202310405402.9A Pending CN116382119A (en) | 2023-04-14 | 2023-04-14 | Impact simulation method and device of domain controller and electronic equipment |
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| Country | Link |
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| CN (1) | CN116382119A (en) |
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