Vehicle bracket analysis method, system and storage medium

Abstract

This invention proposes a method, system, and storage medium for analyzing vehicle brackets. The method includes: importing a CAE model and simulation program for the bracket; determining input parameters and multiple analysis items based on the CAE model, wherein the input parameters include mass point parameters and multiple boundary parameters; creating mass points and connection relationships based on the user-input mass point parameters; creating load sets corresponding to the multiple boundary parameters and multiple load steps corresponding to the multiple analysis items, with each load step associated with a portion of the load sets; and creating control cards to perform calculations on the multiple load steps using the simulation program and constraints on the mass points and connection relationships created based on the user-input mass point parameters, to output analysis results corresponding to the multiple analysis items. Therefore, by using the CAE model and simulation program for the bracket, analysis results corresponding to multiple analysis items are automatically output, improving analysis efficiency and bracket performance, and reducing vehicle development costs.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a vehicle bracket analysis method, a vehicle bracket analysis system and a computer-readable storage medium. Background Art

[0002] At present, there are usually various brackets on cars to carry some functional modules. Once these bearing brackets vibrate, crack or even break under the excitation of random road loads, it will affect the user experience at the least, or even cause the functional modules to fail, and even affect the life safety of the car driver and passengers. Therefore, it is necessary to check the structural performance of all bearing brackets on the car to ensure the stability and safety of the brackets and the modules they carry.

[0003] In the related technology, finite element simulation is usually used to ensure the structural performance of the bracket. When using finite element software to perform vibration intensity analysis on automotive bracket-type structural parts, if there are components or modules installed on the structural parts, in order to simplify the simulation model and improve efficiency, the above components or modules need to be created in the form of concentrated mass points (including center of mass coordinates and mass values), and connected to the corresponding installation position with finite element units. The above analysis process needs to be completed step by step by manual operation. At the same time, after the operation is completed, boundary conditions are created in the X, Y, and Z directions respectively, including damping, mode, gravity field, fixed constraints, excitation, sweep frequency points, power spectrum density and other parameters.

[0004] However, the problem with the related technology is that the existing commonly used CAE analysis software, such as Nastran and Patran, has a single solution type, requires three solution setting analyses, and the interface flow of the entire operation process is not clear enough, which is time-consuming and labor-intensive. Another example is HyperWorks software, although the interface is relatively optimized and clear, the parameter setting process is complicated, and it is difficult for simulation engineers to remember all the operation steps and parameter settings. Even if all the operation steps and parameter settings can be recorded in a file, it is very likely that errors will be made during the comparison operation. All of the above shortcomings directly lead to a significant reduction in the work efficiency of finite element simulation, which is extremely unfavorable to product performance development. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, one object of the present invention is to propose a vehicle bracket analysis method that can automatically output analysis results corresponding to multiple analysis items, improve analysis efficiency and bracket performance, and reduce vehicle R&D costs.

[0006] A second object of the present invention is to provide a vehicle bracket analysis system.

[0007] A third object of the present invention is to provide a computer-readable storage medium.

[0008] To achieve the above-mentioned purpose, a vehicle bracket analysis method proposed in an embodiment of the first aspect of the present invention includes the following steps: importing a CAE model of the bracket and a simulation calculation program; determining input parameters and multiple analysis items based on the CAE model of the bracket, wherein the input parameters include mass point parameters and multiple boundary parameters; creating mass points and connection relationships based on the mass point parameters input by a user; respectively creating load sets corresponding to the multiple boundary parameters and multiple load steps corresponding to the multiple analysis items, each load step being associated with a portion of the load sets in the multiple load sets; creating a control card to operate on the multiple load steps through the simulation calculation program and the constraints for creating mass points and connection relationships based on the mass point parameters input by the user, so as to output analysis results corresponding to the multiple analysis items.

[0009] According to the vehicle bracket analysis method of the embodiment of the present invention, the CAE model of the bracket and the simulation calculation program are imported, and the input parameters and multiple analysis items are determined according to the CAE model of the bracket, wherein the input parameters include mass point parameters and multiple boundary parameters, and mass points and connection relationships are created according to the mass point parameters input by the user, and load sets corresponding to multiple boundary parameters and multiple load steps corresponding to multiple analysis items are created respectively, and each load step is associated with a part of the load sets in the multiple load sets, and then, a control card is created to create constraints of mass points and connection relationships through the simulation calculation program and the mass point parameters input by the user, and multiple load steps are operated to output analysis results corresponding to multiple analysis items. Thus, through the CAE model of the bracket and the simulation calculation program, the analysis results corresponding to multiple analysis items are automatically output, the analysis efficiency and bracket performance are improved, and the vehicle R&D cost is reduced.

[0010] In addition, the vehicle bracket analysis method according to the above embodiment of the present invention may also have the following additional technical features:

[0011] According to an embodiment of the present invention, the plurality of boundary parameters include part or all of damping, mode, gravity field, fixed constraint, excitation, frequency sweep and power spectrum density.

[0012] According to an embodiment of the present invention, the plurality of analysis items include part or all of modal analysis items, frequency response analysis items and random vibration analysis items.

[0013] According to one embodiment of the present invention, the load set includes load sets in the directions of the X, Y, and Z axes, and the analysis items include load steps in the directions of the X, Y, and Z axes.

[0014] According to one embodiment of the present invention, the multiple load steps are operated to output analysis results corresponding to the multiple analysis items, including: using part of the load sets in the multiple load sets associated with the load step as constraints, and using another part of the load sets in the multiple load sets associated with the load step as analysis methods to analyze the corresponding analysis items.

[0015] To achieve the above-mentioned purpose, a vehicle bracket analysis system proposed in an embodiment of the second aspect of the present invention includes: an import module for importing a CAE model of a bracket and a simulation calculation program; an input module for determining input parameters and multiple analysis items based on the CAE model of the bracket, wherein the input parameters include mass point parameters and multiple boundary parameters; a creation module for creating mass points and connection relationships based on the mass point parameters input by a user, and respectively creating load sets corresponding to the multiple boundary parameters and multiple load steps corresponding to multiple analysis items, each load step being associated with a portion of the load sets in the multiple load sets; an analysis module for creating a control card to operate on the multiple load steps through the simulation calculation program and the constraints for creating mass points and connection relationships based on the mass point parameters input by the user, so as to output analysis results corresponding to the multiple analysis items.

[0016] According to the vehicle bracket analysis system of the embodiment of the present invention, the CAE model and simulation calculation program of the bracket are imported through the import module, and the input parameters and multiple analysis items are determined according to the CAE model of the bracket through the input module, wherein the input parameters include mass point parameters and multiple boundary parameters, and the mass points and connection relationships are created according to the mass point parameters input by the user through the creation module, and load sets corresponding to multiple boundary parameters and multiple load steps corresponding to multiple analysis items are created respectively, and each load step is associated with a part of the load sets in the multiple load sets, and then, the control card is created through the analysis module to create constraints of mass points and connection relationships through the simulation calculation program and the mass point parameters input by the user, and the multiple load steps are operated to output the analysis results corresponding to the multiple analysis items. Therefore, through the CAE model of the bracket and the simulation calculation program, the analysis results corresponding to the multiple analysis items are automatically output, the analysis efficiency and bracket performance are improved, and the vehicle R&D cost is reduced.

[0017] In addition, the vehicle bracket analysis system according to the above embodiment of the present invention may also have the following additional technical features:

[0018] According to one embodiment of the present invention, the multiple boundary parameters include part or all of damping, mode, gravity field, fixed constraint, excitation, frequency sweep and power spectral density; the multiple analysis items include part or all of modal analysis items, frequency response analysis items and random vibration analysis items.

[0019] According to one embodiment of the present invention, the load set includes load sets in the directions of the X, Y, and Z axes, and the analysis items include load steps in the directions of the X, Y, and Z axes.

[0020] According to one embodiment of the present invention, the analysis module is used to use part of the load sets among the multiple load sets associated with the load step as constraints, and use another part of the load sets among the multiple load sets associated with the load step as analysis methods to analyze corresponding analysis items.

[0021] To achieve the above-mentioned purpose, a computer-readable storage medium is proposed in a third aspect of an embodiment of the present invention, on which a vehicle bracket analysis program is stored. When the vehicle bracket analysis program is executed by a processor, the above-mentioned vehicle bracket analysis method is implemented.

[0022] According to the computer-readable storage medium of the embodiment of the present invention, a bracket analysis program of the vehicle is stored, so that the analysis results corresponding to multiple analysis items are automatically output through the CAE model of the bracket and the simulation calculation program, thereby improving the analysis efficiency and bracket performance and reducing the vehicle R&D cost.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a process of analyzing a vehicle bracket according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a process flow of a vehicle bracket analysis method according to a specific embodiment of the present invention;

[0026] Figure 3 A schematic diagram of a process flow of a vehicle bracket analysis method according to a specific embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a process flow of a vehicle bracket analysis method according to a specific embodiment of the present invention;

[0028] Figure 5 FIG. 4 is a block diagram of a vehicle bracket analysis system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following describes a vehicle bracket analysis method, system, and storage medium according to embodiments of the present invention with reference to the accompanying drawings.

[0031] Figure 1 1 is a flow chart of a method for analyzing a support of a vehicle according to an embodiment of the present invention.

[0032] like Figure 1 As shown, the vehicle bracket analysis method includes the following steps:

[0033] S101, import the CAE model of the bracket and the simulation calculation program.

[0034] Optionally, the user may import the CAE model and simulation calculation program of the bracket that needs to be subjected to random vibration analysis through CAE analysis pre-processing software.

[0035] It should be noted that the simulation calculation program can be assembled in advance using Tcl / Tk language to facilitate the CAE analysis pre-processing software to run the simulation calculation program.

[0036] S102, determining input parameters and a plurality of analysis items according to the CAE model of the bracket, wherein the input parameters include mass point parameters and a plurality of boundary parameters.

[0037] Specifically, according to an embodiment of the present invention, the plurality of boundary parameters may include part or all of damping, mode, gravity field, fixed constraint, excitation, frequency sweep and power spectrum density.

[0038] It should be understood that in the embodiment of the present invention, the critical damping is set to 0.03 to create the damping parameters, wherein the damping parameters can be set accordingly according to different bracket types; all modal values ​​in the frequency range of 0-200 Hz are calculated to create the modal parameters; the acceleration is set to 9800 mm / s in the frequency range of 5-200 Hz 2 , to create gravity field parameters; select constraint loading points, apply 6 degrees of freedom constraints at the bracket installation point to create fixed constraint parameters; apply unit loads in the X direction to the aforementioned constraint loading points to create excitation parameters; use a frequency range of 5-200Hz, a sweep point interval of 0.39Hz, a total of 50 segments to create sweep parameters, and use the modal results obtained by modal analysis as the center, and grab 5 points with the modal value multiplied by 0.03 as the interval; use frequency Hz as the horizontal coordinate, and the power spectrum density value g 2 / Hz is the vertical axis to create the power spectral density parameters.

[0039] More specifically, according to an embodiment of the present invention, the plurality of analysis items may include part or all of modal analysis items, frequency response analysis items, and random vibration analysis items.

[0040] That is to say, in an embodiment of the present invention, the CAE model of the bracket can be analyzed accordingly according to the modal analysis items, frequency response analysis items and random vibration analysis items to output analysis results corresponding to the modal analysis items, frequency response analysis items and random vibration analysis items.

[0041] S103, creating mass points and connection relationships according to mass point parameters input by the user.

[0042] It should be understood that, in the embodiment of the present invention, the mass point parameters input by the user may include the coordinates of the center of mass point, the mass point mass and the installation point position.

[0043] S104, respectively creating load sets corresponding to the plurality of boundary parameters and a plurality of load steps corresponding to the plurality of analysis items, each load step being associated with a portion of the plurality of load sets.

[0044] For example, corresponding to the damping parameters, a damping load set is created and named damp to store the damping parameters; corresponding to the modal parameters, a modal load set is created and named EIGRL; corresponding to the gravity field parameters, a gravity field load set is created and named field to store the gravity field parameters; corresponding to the fixed constraint parameters, a constraint load set is created and named spc to store the fixed constraint parameters; corresponding to the excitation parameters, an excitation load set is created and named spcd_x to store the excitation parameters; corresponding to the sweep frequency parameters, a sweep frequency load set is created and named freq to store the sweep frequency parameters and corresponding to the power spectrum density parameters, a power spectrum density load set is created and named tabrnd1_x to store the power spectrum density load set, and, corresponding to the modal analysis item, a modal analysis load step named mode is created to perform modal analysis; corresponding to the frequency response analysis item, a frequency response load step named freq_x is created to perform frequency response analysis, and corresponding to the random vibration analysis item, a random vibration analysis load step named randps_x is created to perform random vibration analysis.

[0045] S105, creating a control card to create constraints on mass points and connection relationships through a simulation calculation program and according to mass point parameters input by a user, and performing operations on multiple load steps to output analysis results corresponding to multiple analysis items.

[0046] Therefore, the bracket analysis method for a vehicle in an embodiment of the present invention creates constraints on mass points and connection relationships through a simulation calculation program and based on mass point parameters input by a user, and performs operations on multiple load steps to output analysis results corresponding to multiple analysis items, thereby achieving automatic analysis and result output corresponding to multiple analysis items, improving analysis efficiency and bracket performance, and reducing vehicle R&D costs.

[0047] Further, according to an embodiment of the present invention, the load set may include load sets in the X, Y, and Z axis directions, and the analysis item may include load steps in the X, Y, and Z axis directions.

[0048] It can be understood that, in the embodiment of the present invention, modal analysis, frequency response analysis and random vibration analysis in the X, Y and Z axis directions can be implemented.

[0049] Further, according to one embodiment of the present invention, multiple load steps are calculated to output analysis results corresponding to multiple analysis items, including: using part of the load sets in the multiple load sets associated with the load step as constraints, and using another part of the load sets in the multiple load sets associated with the load step as analysis methods to analyze the corresponding analysis items.

[0050] The following is combined with Figure 2-4 The vehicle support analysis method of the present invention is further described with reference to a specific embodiment, and the specific steps are as follows:

[0051] S1, open the CAE analysis pre-processing software and import the CAE model of the bracket.

[0052] S2, import the simulation calculation program into the CAE analysis pre-processing software.

[0053] S3, prompts the user to input mass point parameters (center of mass coordinates, mass, installation point position), constraint loading point position and power spectrum density parameters.

[0054] S4, create a component and name it mass.

[0055] S5, reading the mass point parameters prompted by the user to input in step S3, and creating a mass point unit (including the coordinates of the center of mass and the mass), and placing it in the component named mass created above.

[0056] S6, create a component and name it RBE2.

[0057] S7, create an rb2 unit with the mass point as the master node and the installation point as the slave node, and place it in the component named RBE2 created above.

[0058] It should be noted that when establishing a connection between the concentrated mass point and the installation point, the rb2 unit can be used for connection, wherein the rb2 unit is a one-dimensional unit used to connect the model.

[0059] S8, looping steps S5 and S7 to create the required quality points and connection information.

[0060] S9, create a load set and name it spc.

[0061] S10, select the constraint loading point according to the position of the constraint loading point in step S3, apply a 6-degree-of-freedom constraint to the bracket mounting point (ie, the mounting point is completely fixed), and place this constraint in the load set named spc as mentioned above.

[0062] S11, create a load set and name it EIGRL (the mode of the calculation model).

[0063] S12, create a modal load set, calculate all modal values ​​in the frequency range of 0-200 Hz, and place this modal control in the load set named EIGRL mentioned above.

[0064] S13, create a modal analysis load step named mode, with the aforementioned spc load set as the constraint and the aforementioned EIGRL load set as the analysis method.

[0065] It can be understood that the modal analysis load step is used to perform modal analysis on the CAE model of the bracket.

[0066] S14, create a load set and name it damp.

[0067] S15, create damping parameters: critical damping is 0.03, and place it in the previous load set named damp.

[0068] S16, create a frequency sweep load set and name it freq.

[0069] S17, create sweep frequency parameters: range 5-200 Hz, sweep frequency point interval 0.39 Hz, 50 segments in total, center on the modal result obtained at the modal point in step S13, take 5 points nearby with the modal value multiplied by 0.03 as the interval, and put the above information in the aforementioned frequency load set.

[0070] S18, create a gravity field load set and name it field.

[0071] S19, create gravity field parameters: set acceleration to 9800mm / s in the range of 5-200Hz 2 , and place this parameter in the field load set.

[0072] S20, create an excitation load set and name it spcd_x.

[0073] S21, create excitation parameters: apply a unit load in the X direction to the spc constraint point and place it in the spcd_x load set.

[0074] S22, create a frequency response load set and name it rload_x.

[0075] S23, create and associate the aforementioned field load set and spcd_x load set, and put it in the rload_x load set, that is, apply 9800mm / s along the X direction at the installation point 2 acceleration.

[0076] S24), create a frequency response load step named freq_x, use the aforementioned spc load set as the constraint, the aforementioned EIGRL load set as the analysis method, the aforementioned rload as the load excitation, the aforementioned freq as the frequency sweep requirement, and the aforementioned damp as the damping.

[0077] It can be appreciated that the frequency response load step is used to perform a frequency response analysis on the CAE model of the bracket.

[0078] S25, loop steps S20-S24 twice, and establish load sets (including spcd_y, spcd_z, rload_y and rload_z) and load steps (including freq_y and freq_z) in the Y and Z directions in turn.

[0079] S26, create a power spectral density loading set and name it tabrnd1_x.

[0080] S27, create the power spectrum density parameters in the X direction, with the frequency Hz as the horizontal coordinate and the power spectrum density value g2 / Hz as the vertical coordinate. The first point is (5, 0.013), the second point is (10, 0.03), the third point is (20, 0.03), and the fourth point is (200, 0.00025), where the power spectrum density parameters are selected by the user in step S3.

[0081] S28, create a random analysis load set and name it randps_x.

[0082] S29, associate the aforementioned tabrnd1_x load set with the freq_x load set, and form a random analysis load step, which is placed in the randps_x load set.

[0083] S30, looping steps S26-S29 twice, and establishing the power spectrum density load set and the random analysis load set in the Y and Z directions in turn.

[0084] It should be noted that the last digit x in tabrnd1_x and randps_x in the above naming will be replaced by y and z, that is, the load sets tabrnd1_y, tabrnd1_z, randps_y, and randps_z are created.

[0085] S31, create random analysis control cards.

[0086] S32, automatically establishing a random analysis load step in the X direction in the aforementioned control card, and calling the aforementioned randps load set.

[0087] It should be noted that the random analysis load step is used to perform random vibration analysis on the CAE model of the bracket.

[0088] S33, repeat step S32 twice, and establish random analysis load steps in the Y and Z directions in sequence.

[0089] S34, create an output card, which specifies that Mises stress is output in the results.

[0090] S35, submit the operation.

[0091] In summary, according to the vehicle bracket analysis method of the embodiment of the present invention, the CAE model of the bracket and the simulation calculation program are imported, and the input parameters and multiple analysis items are determined according to the CAE model of the bracket, wherein the input parameters include mass point parameters and multiple boundary parameters, and mass points and connection relationships are created according to the mass point parameters input by the user, and load sets corresponding to multiple boundary parameters and multiple load steps corresponding to multiple analysis items are created respectively, and each load step is associated with a part of the load sets in the multiple load sets, and then, a control card is created to create constraints of mass points and connection relationships through the simulation calculation program and the mass point parameters input by the user, and multiple load steps are operated to output analysis results corresponding to multiple analysis items. Therefore, through the CAE model of the bracket and the simulation calculation program, the analysis results corresponding to multiple analysis items are automatically output, the analysis efficiency and bracket performance are improved, and the vehicle R&D cost is reduced.

[0092] Figure 5 FIG. 4 is a block diagram of a vehicle bracket analysis system according to an embodiment of the present invention.

[0093] like Figure 5 As shown, the vehicle bracket analysis system 100 includes: an import module 10 , an input module 20 , a creation module 30 and an analysis module 40 .

[0094] Among them, the import module 10 is used to import the CAE model of the bracket and the simulation calculation program; the input module 20 is used to determine the input parameters and multiple analysis items according to the CAE model of the bracket, wherein the input parameters include mass point parameters and multiple boundary parameters; the creation module 30 is used to create mass points and connection relationships according to the mass point parameters input by the user, and respectively create load sets corresponding to multiple boundary parameters and multiple load steps corresponding to multiple analysis items, each load step is associated with a part of the load sets in the multiple load sets; the analysis module 40 is used to create a control card to create constraints on mass points and connection relationships through a simulation calculation program and according to the mass point parameters input by the user, and perform operations on multiple load steps to output analysis results corresponding to multiple analysis items.

[0095] Further, according to one embodiment of the present invention, the multiple boundary parameters include part or all of damping, mode, gravity field, fixed constraint, excitation, frequency sweep and power spectral density; the multiple analysis items include part or all of modal analysis items, frequency response analysis items and random vibration analysis items.

[0096] Further, according to an embodiment of the present invention, the load set includes load sets in the directions of the X, Y, and Z axes, and the analysis items include load steps in the directions of the X, Y, and Z axes.

[0097] Further, according to an embodiment of the present invention, the analysis module 40 is used to use part of the load sets in the multiple load sets associated with the load step as constraints, and use another part of the load sets in the multiple load sets associated with the load step as analysis methods to analyze corresponding analysis items.

[0098] It should be noted that the vehicle bracket analysis system proposed in the embodiment of the present invention corresponds to the specific implementation of the bracket analysis method in the aforementioned embodiment of the present invention, and will not be described in detail here.

[0099] In summary, according to the vehicle bracket analysis system of the embodiment of the present invention, the CAE model of the bracket and the simulation calculation program are imported through the import module, and the input parameters and multiple analysis items are determined according to the CAE model of the bracket through the input module, wherein the input parameters include mass point parameters and multiple boundary parameters, and the mass points and connection relationships are created according to the mass point parameters input by the user through the creation module, and load sets corresponding to multiple boundary parameters and multiple load steps corresponding to multiple analysis items are created respectively, and each load step is associated with a part of the load sets in the multiple load sets, and then, the control card is created through the analysis module to create constraints of mass points and connection relationships through the simulation calculation program and the mass point parameters input by the user, and the multiple load steps are operated to output the analysis results corresponding to the multiple analysis items. Therefore, through the CAE model of the bracket and the simulation calculation program, the analysis results corresponding to the multiple analysis items are automatically output, the analysis efficiency and bracket performance are improved, and the vehicle R&D cost is reduced.

[0100] Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium corresponding to the aforementioned vehicle bracket analysis method 100 .

[0101] Specifically, the computer-readable storage medium proposed in the embodiment of the present invention stores a vehicle bracket analysis program, and when the vehicle bracket analysis program is executed by a processor, a specific embodiment corresponding to the aforementioned vehicle bracket analysis method 100 can be implemented.

[0102] According to the computer-readable storage medium of the embodiment of the present invention, the aforementioned vehicle bracket analysis method is adopted, which can automatically output analysis results corresponding to multiple analysis items, improve analysis efficiency and bracket performance, and reduce vehicle R&D costs.

[0103] Since the computer-readable storage medium introduced in the embodiment of the present invention is a computer-readable storage medium used to implement the vehicle bracket analysis method of the above embodiment of the present invention, based on the computer-readable storage medium introduced in the above embodiment of the present invention, the person skilled in the art can understand the specific structure and deformation of the computer-readable storage medium, so it is not repeated here. All computer-readable storage media used in the vehicle bracket analysis method of the embodiment of the present invention belong to the scope of protection of the present invention.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0105] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0106] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0107] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0108] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0109] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0110] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0111] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0112] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0113] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0114] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0115] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A vehicle bracket analysis method, characterized in that: The following steps are involved: Import the CAE model of the bracket and the simulation calculation program; Determining input parameters and a plurality of analysis items according to the CAE model of the bracket, wherein the input parameters include mass point parameters and a plurality of boundary parameters; Create mass points and connection relationships based on mass point parameters input by the user; Creating load sets corresponding to the plurality of boundary parameters and a plurality of load steps corresponding to the plurality of analysis items respectively, wherein each load step is associated with a portion of the load sets in the plurality of load sets; Creating a control card to operate the plurality of load steps through the simulation calculation program and the constraints of mass points and connection relationships created according to the mass point parameters input by the user, so as to output analysis results corresponding to the plurality of analysis items; The performing operation on the plurality of load steps to output analysis results corresponding to the plurality of analysis items includes: A part of the load sets in the multiple load sets associated with the load step is used as a constraint, and another part of the load sets in the multiple load sets associated with the load step is used as an analysis method to analyze the corresponding analysis items.

2. The vehicle support analysis method according to claim 1, characterized in that: The plurality of boundary parameters include part or all of damping, mode, gravity field, fixed constraint, excitation, frequency sweep and power spectral density.

3. The vehicle support analysis method according to claim 2, characterized in that: The multiple analysis items include part or all of modal analysis items, frequency response analysis items and random vibration analysis items.

4. The vehicle support analysis method according to any one of claims 1 to 3, characterized in that: The load set includes load sets in the X-axis, Y-axis, and Z-axis directions, and the analysis items include load steps in the X-axis direction, load steps in the Y-axis direction, and load steps in the Z-axis direction.

5. A vehicle support analysis system, characterized in that: include: Import module, used to import the CAE model of the bracket and the simulation calculation program; An input module, used to determine input parameters and a plurality of analysis items according to the CAE model of the bracket, wherein the input parameters include mass point parameters and a plurality of boundary parameters; A creation module, used to create mass points and connection relationships according to mass point parameters input by a user, and to respectively create load sets corresponding to the multiple boundary parameters and multiple load steps corresponding to the multiple analysis items, each load step being associated with a part of the load sets in the multiple load sets; An analysis module, used to create a control card, to create constraints of mass points and connection relationships through the simulation calculation program and the mass point parameters input by the user, to operate on the multiple load steps, and to output analysis results corresponding to the multiple analysis items; The analysis module is used to use part of the load sets in the multiple load sets associated with the load step as constraints, and use another part of the load sets in the multiple load sets associated with the load step as analysis methods to analyze corresponding analysis items.

6. The vehicle support analysis system according to claim 5, characterized in that: The plurality of boundary parameters include part or all of damping, mode, gravity field, fixed constraint, excitation, frequency sweep and power spectral density; The multiple analysis items include part or all of modal analysis items, frequency response analysis items and random vibration analysis items.

7. The vehicle support analysis system according to claim 5 or 6, characterized in that: The load set includes load sets in the X-axis, Y-axis, and Z-axis directions, and the analysis items include load steps in the X-axis direction, load steps in the Y-axis direction, and load steps in the Z-axis direction.

8. A computer-readable storage medium having a vehicle bracket analysis program stored thereon, wherein the vehicle bracket analysis program, when executed by a processor, implements the vehicle bracket analysis method according to any one of claims 1 to 4.

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