CN114580074A - Vehicle target area determining method and device and terminal equipment - Google Patents

Vehicle target area determining method and device and terminal equipment Download PDF

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Publication number
CN114580074A
CN114580074A CN202110348312.1A CN202110348312A CN114580074A CN 114580074 A CN114580074 A CN 114580074A CN 202110348312 A CN202110348312 A CN 202110348312A CN 114580074 A CN114580074 A CN 114580074A
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virtual
model
vehicle
collision
vehicle body
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高坡
刘珍海
刘阳
杨领军
孙晴
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Priority to CN202110348312.1A priority Critical patent/CN114580074A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/20—Design reuse, reusability analysis or reusability optimisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The invention is suitable for the technical field of vehicle modeling, and discloses a method, a device and a terminal device for determining a vehicle target area, wherein the method is applied to a vehicle modeling stage and used for protecting the leg of a pedestrian, and comprises the following steps: acquiring CAS data of a vehicle body model and a position of a model parting; dividing the car body modeling into a plurality of virtual sub-modeling according to CAS data and the position of the modeling parting, and respectively setting modeling parameters for each virtual sub-modeling; adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to the preset whole vehicle arrangement scheme and the position of the model parting to obtain a virtual vehicle anti-collision model; and carrying out virtual simulation analysis on the virtual vehicle anti-collision model based on the constructed leg collision working condition, and determining the target area of the current vehicle body shape. The invention can completely discover modeling problems in the vehicle modeling stage, and can not leave the detailed vehicle design stage, thereby improving the implementation rate of the scheme, reducing the optimization cost and shortening the analysis period.

Description

Vehicle target area determining method and device and terminal equipment
Technical Field
The invention belongs to the technical field of vehicle modeling, and particularly relates to a method and a device for determining a vehicle target area and terminal equipment.
Background
The pedestrian leg protection performance is greatly affected by the shape of the vehicle. In the vehicle modeling stage, whether the design of the front end of the vehicle in the modeling stage is beneficial to the leg protection of the pedestrian is generally evaluated empirically, however, the analysis problem is not comprehensive and is greatly influenced by human factors, so that part of the problem is left to the detailed vehicle design stage. When leg performance analysis is carried out in the detailed design stage of the vehicle, the problems left in the modeling stage of the vehicle need to be optimized structurally, but the formulation of the scheme is influenced by both modeling and process, so that the problems of low implementation rate, high optimization cost and long analysis period are caused.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for determining a vehicle target area, and a terminal device, so as to solve the problems of a low implementation rate of a scheme, a high optimization cost, and a long analysis period in a detailed vehicle design stage in the prior art.
A first aspect of an embodiment of the present invention provides a vehicle target area determination method, applied to a vehicle modeling stage, for pedestrian leg protection, the vehicle target area determination method including:
acquiring CAS (Concept A Surface, front-stage outer Surface digital-analog) data of a vehicle body shape and the position of a shape parting;
dividing the vehicle body model into a plurality of virtual sub-models according to CAS data and the positions of model parting, and respectively setting model parameters for each virtual sub-model to obtain the virtual vehicle body model with the set model parameters;
adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to the preset whole vehicle arrangement scheme and the position of the model parting to obtain a virtual vehicle anti-collision model;
and carrying out virtual simulation analysis on the virtual vehicle anti-collision model based on the constructed leg collision working condition, and determining the target area of the current vehicle body shape.
A second aspect of an embodiment of the present invention provides a vehicle target region determination device, applied to a vehicle modeling stage, for pedestrian leg protection, the vehicle target region determination device including:
the acquisition module is used for acquiring CAS data of the vehicle body shape and the position of the shape parting;
the dividing module is used for dividing the vehicle body model into a plurality of virtual sub-models according to the CAS data and the model parting positions, and respectively setting model parameters of each virtual sub-model to obtain the virtual vehicle body model after the model parameters are set;
the anti-collision structure adding module is used for adding a virtual anti-collision structure into the virtual vehicle body model after the model parameters are set according to the preset whole vehicle arrangement scheme and the position of the model parting to obtain a virtual vehicle anti-collision model;
and the simulation analysis module is used for carrying out virtual simulation analysis on the virtual vehicle anti-collision model based on the constructed leg collision working condition and determining the target area of the current vehicle body shape.
A third aspect of embodiments of the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, the processor implementing the steps of the vehicle target area determination method according to any one of the first aspect when executing the computer program.
A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium storing a computer program that, when executed by one or more processors, implements the steps of the vehicle target area determination method according to any one of the first aspects.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: according to the embodiment of the invention, the performance analysis of the pedestrian leg protection part is carried out in the vehicle modeling stage, and specifically, the CAS data of the vehicle body modeling and the position of the modeling parting are obtained; dividing the vehicle body model into a plurality of virtual sub-models according to CAS data and the positions of the model parting seams, and respectively setting model parameters for each virtual sub-model to obtain the virtual vehicle body model with the set model parameters; adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to the preset whole vehicle arrangement scheme and the position of the model parting to obtain a virtual vehicle anti-collision model; based on the leg collision operating mode of putting up, carry out virtual simulation analysis to virtual vehicle anticollision model, confirm the target zone of current automobile body molding promptly, confirm that current automobile body molding is unfavorable for pedestrian's shank protection's region, can be with the whole discoveries of molding problem in the vehicle molding stage, can not leave over the detailed design stage of vehicle to can improve the scheme implementation rate, reduce optimization cost and shorten analysis cycle.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic flow chart illustrating an implementation of a method for determining a target area of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic view of a virtual front end configuration of a vehicle body provided in accordance with an embodiment of the present invention;
fig. 3 is a schematic view of a virtual collision avoidance structure according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the location of a node provided by an embodiment of the present invention;
fig. 5 is a schematic block diagram of a vehicle target area determination apparatus provided by an embodiment of the present invention;
fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 is a schematic flow chart of an implementation of a method for determining a target area of a vehicle according to an embodiment of the present invention, and for convenience of description, only a part related to the embodiment of the present invention is shown. The execution main body of the embodiment of the invention can be terminal equipment.
The vehicle target area determining method is applied to a vehicle modeling stage and used for protecting the legs of pedestrians. As shown in fig. 1, the method may include the steps of:
s101: CAS data of the vehicle body model and the position of the model parting are obtained.
Wherein the CAS data is external CAS data, i.e., CAS data of an external body figure. The position of the molding slit may be a predetermined position of the slit of each of the sub-moldings.
S102: according to the CAS data and the positions of the modeling parting seams, the vehicle body modeling is divided into a plurality of virtual sub-models, modeling parameters are set for each virtual sub-model respectively, and the virtual vehicle body modeling after the modeling parameters are set is obtained.
In an embodiment of the present invention, the dividing the body model into a plurality of virtual sub-models according to the CAS data and the positions of the model joints includes:
obtaining a virtual vehicle body model according to the CAS data;
carrying out gridding processing on the virtual vehicle body model, and intercepting the virtual vehicle body model at a preset position to obtain a virtual vehicle body front end model;
and dividing the front end model of the virtual vehicle body according to the position of the model parting to obtain a plurality of virtual sub-models.
In one embodiment of the present invention, referring to fig. 2, the plurality of virtual sub-figures includes virtual figures corresponding to a hood 201, a fender 202, a front combination light 203, a front bumper 204, and a lower grill 205, respectively.
In an embodiment of the present invention, the above setting the molding parameters for each virtual sub-molding respectively includes:
the material and thickness of each virtual sub-figure is set.
Wherein the preset position 206 may be a fender intermediate position, as shown in fig. 2.
Specifically, the gridding process can be performed in finite element software, and the grid size is 5 mm. In order to save the calculation time, the calculation time can be saved by intercepting the middle position of the fender, and only the data of the front end model of the vehicle body, namely only the front end model of the virtual vehicle body, is reserved. And partitioning according to the modeling characteristics, and particularly dividing the front end model of the virtual vehicle body into virtual models respectively corresponding to a hood, a fender, a front combination lamp, a front bumper and a lower grille according to the modeling parting positions.
The material and thickness of each virtual sub-model can be set through preprocessing software Oasys. Specifically, the thickness of the outer plate of the hood can be set to be 2mm, and the shell of the front combination lamp can be deflected by about 100mm to form a closed structure to simulate the shell of the headlamp.
S103: and adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to the preset whole vehicle arrangement scheme and the position of the model parting to obtain a virtual vehicle anti-collision model.
In one embodiment of the present invention, referring to fig. 3, a virtual impact structure includes a virtual grille mount 207 and a virtual front impact beam assembly 208;
the S103 may include:
determining the arrangement position of the virtual grid mounting plate and the arrangement position of the virtual front anti-collision beam assembly according to a preset whole vehicle arrangement scheme and the position of the modeling parting;
adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to the arrangement position of the virtual grid mounting plate and the arrangement position of the virtual front anti-collision beam assembly, and establishing boundary conditions and all degrees of freedom of constraint nodes to obtain a virtual vehicle anti-collision model.
In one embodiment of the invention, referring to FIG. 4, the locations of the nodes include a rear hood section 209, a front combination light rear shell 210, a grille mounting plate rear section 211, a bumper beam energy absorption box rear section 212, and a front fender rear section 213.
Specifically, an internal structure is added according to the whole vehicle arrangement scheme, and the internal structure mainly comprises a grid mounting plate and a front anti-collision beam assembly and is used for simulating vertical rigidity. The arrangement position of the front anti-collision beam assembly can be determined by the total arrangement of a whole vehicle arrangement scheme, and the position of the grid mounting plate is determined according to the position of the modeling parting and the design and planning of designers. Wherein, the structure of grid mounting panel and preceding crashproof roof beam assembly can adopt the relevant structure of the same motorcycle type.
The virtual vehicle body model and the virtual anti-collision structure after the model parameters are set can be combined in the pre-processing software, boundary conditions are established, all degrees of freedom of nodes are restrained, and the state of the whole vehicle during test is simulated. The positions of the constraint nodes are a rear section of the hood, a rear shell of the front combination lamp, a rear section of the grille installation plate, a rear section of the anti-collision beam energy absorption box, a rear section of the front protective lower guard plate and the like.
S104: and carrying out virtual simulation analysis on the virtual vehicle anti-collision model based on the constructed leg collision working condition, and determining the target area of the current vehicle body shape.
Based on the steps, the model at the front end of the whole vehicle is built by using the CAS, the leg collision working condition can be built according to the leg performance test rule, and virtual simulation analysis is carried out by using dyna software. And identifying the target area of the current vehicle body shape according to the analyzed result and the simulation animation. The target area of the current vehicle body model refers to an area which is not beneficial to protecting legs of pedestrians in the current vehicle body model, for example, the target area can be a middle anti-collision beam and an outer CAS, and a specific problem can be whether the space from the middle anti-collision beam to the outer CAS is enough; the target area can be the X-direction position of the front end of the hood or the seam dividing position, and the specific problem can be whether the X-direction position of the front end of the hood or the seam dividing position is reasonable or not; the target area may be an X-direction position of the lower support, and the specific problem may be whether the X-direction position of the lower support is reasonable or not.
After S104, the body shape modification may be performed according to the target area of the current body shape, and based on the modified body shape, S101 to S104 are repeatedly performed until the target area does not exist for the current body shape, that is, all the problems that the current body shape is not favorable for pedestrian leg protection are solved.
For example, the vehicle target area determination method may be performed in MADYMO software, and simulation analysis may be performed by using a coupling method, which has the same principle.
Through tests, the results of the leg performance analysis performed by the vehicle target region determining method provided by the embodiment of the invention in the vehicle modeling stage are basically consistent with the results of the leg performance analysis performed by the finite element model in the vehicle detailed design stage in the prior art, so that the vehicle target region determining method provided by the embodiment of the invention can perform problem identification in the early modeling stage.
As can be seen from the above description, by performing performance analysis on the leg portions of pedestrian protection in the vehicle modeling stage, the embodiments of the present invention can solve the problems that in the prior art, analysis problems are incomplete in the vehicle modeling stage and are greatly influenced by human factors, so that some problems are left in the vehicle detailed design stage, but in the vehicle detailed design stage, the problems are caused by two aspects of modeling and process, so that the implementation rate of the solution is low, the optimization cost is high, and the analysis period is long; in the embodiment of the invention, the virtual analysis starts to intervene in the external CAS, so that the influence of external CAS data on the performance of the leg can be effectively recognized, the modeling problem is completely discovered and solved in the vehicle modeling stage, the vehicle detailed design stage is not left, and only the structural scheme verification is carried out in the vehicle detailed design stage, thereby improving the scheme implementation rate, reducing the optimization cost and shortening the analysis period.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Corresponding to the vehicle target area determining method, an embodiment of the invention also provides a vehicle target area determining device, which has the same beneficial effects as the vehicle target area determining method. Fig. 5 is a schematic block diagram of a vehicle target area determination device according to an embodiment of the present invention, and for convenience of explanation, only the portions related to the embodiment of the present invention are shown.
In the embodiment of the invention, the vehicle target region determining apparatus 30 is applied to the vehicle modeling stage for pedestrian leg protection; the vehicle target zone determination apparatus 30 may include an acquisition module 301, a division module 302, a collision avoidance structure addition module 303, and a simulation analysis module 304.
The acquisition module 301 is used for acquiring CAS data of a vehicle body model and a position of a model parting;
the dividing module 302 is used for dividing the vehicle body model into a plurality of virtual sub-models according to the CAS data and the positions of the model parting seams, and setting model parameters of each virtual sub-model respectively to obtain the virtual vehicle body model after the model parameters are set;
the anti-collision structure adding module 303 is used for adding a virtual anti-collision structure into the virtual vehicle body model after the model parameters are set according to the preset whole vehicle arrangement scheme and the position of the model parting to obtain a virtual vehicle anti-collision model;
and the simulation analysis module 304 is configured to perform virtual simulation analysis on the virtual vehicle collision avoidance model based on the built leg collision condition, and determine a target area of the current vehicle body shape.
In an embodiment of the present invention, the dividing module 302 may further be configured to:
the material and thickness of each virtual sub-figure is set.
Optionally, the dividing module 302 may be further configured to:
obtaining a virtual vehicle body model according to the CAS data;
carrying out gridding processing on the virtual vehicle body model, and intercepting the virtual vehicle body model at a preset position to obtain a virtual vehicle body front end model;
and dividing the front end model of the virtual vehicle body according to the position of the model parting to obtain a plurality of virtual sub-models.
In one embodiment of the present invention, the plurality of virtual sub-moldings include virtual moldings corresponding to a hood, a fender, a front combination lamp, a front bumper and a lower grill, respectively.
In one embodiment of the invention, a virtual impact structure includes a virtual grille mounting plate and a virtual front impact beam assembly;
the collision avoidance structure addition module 303 may also be configured to:
determining the arrangement position of the virtual grid mounting plate and the arrangement position of the virtual front anti-collision beam assembly according to a preset whole vehicle arrangement scheme and the position of the modeling parting;
adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to the arrangement position of the virtual grid mounting plate and the arrangement position of the virtual front anti-collision beam assembly, and establishing boundary conditions and all degrees of freedom of constraint nodes to obtain a virtual vehicle anti-collision model.
In one embodiment of the invention, the positions of the nodes comprise a rear hood section, a rear combination front lamp shell, a rear grille mounting plate section, a rear bumper beam energy absorption box section and a rear protective front plate section.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function allocation may be performed by different functional units and modules according to needs, that is, the internal structure of the vehicle target area determination apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the above-mentioned apparatus may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 6, the terminal device 40 of this embodiment includes: one or more processors 401, a memory 402, and a computer program 403 stored in the memory 402 and executable on the processors 401. The processor 401, when executing the computer program 403, implements the steps in the various vehicle target region determination method embodiments described above, such as steps S101 to S104 shown in fig. 1. Alternatively, the processor 401, when executing the computer program 403, implements the functions of the modules/units in the above-described vehicle target region determination apparatus embodiment, such as the functions of the modules 301 to 304 shown in fig. 5.
Illustratively, the computer program 403 may be partitioned into one or more modules/units that are stored in the memory 402 and executed by the processor 401 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program 403 in the terminal device 40. For example, the computer program 403 may be divided into an acquisition module, a division module, a collision avoidance structure adding module, and a simulation analysis module, and the specific functions of each module are as follows:
the acquisition module is used for acquiring CAS data of the vehicle body shape and the position of the shape parting;
the dividing module is used for dividing the vehicle body model into a plurality of virtual sub-models according to the CAS data and the positions of the model parting seams, and setting model parameters of each virtual sub-model respectively to obtain the virtual vehicle body model after the model parameters are set;
the anti-collision structure adding module is used for adding a virtual anti-collision structure into the virtual vehicle body model after the model parameters are set according to the preset whole vehicle arrangement scheme and the position of the model parting to obtain a virtual vehicle anti-collision model;
and the simulation analysis module is used for carrying out virtual simulation analysis on the virtual vehicle anti-collision model based on the constructed leg collision working condition and determining the target area of the current vehicle body shape.
Other modules or units can refer to the description of the embodiment shown in fig. 5, and are not described again here.
The terminal device 40 may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal device 40 includes, but is not limited to, a processor 401 and a memory 402. Those skilled in the art will appreciate that fig. 6 is only one example of a terminal device 40, and does not constitute a limitation to the terminal device 40, and may include more or less components than those shown, or combine some components, or different components, for example, the terminal device 40 may further include an input device, an output device, a network access device, a bus, etc.
The Processor 401 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 402 may be an internal storage unit of the terminal device 40, such as a hard disk or a memory of the terminal device 40. The memory 402 may also be an external storage device of the terminal device 40, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the terminal device 40. Further, the memory 402 may also include both an internal storage unit of the terminal device 40 and an external storage device. The memory 402 is used for storing the computer program 403 and other programs and data required by the terminal device 40. The memory 402 may also be used to temporarily store data that has been output or is to be output.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed vehicle target area determining apparatus and method may be implemented in other ways. For example, the above-described embodiments of the vehicle target area determination apparatus are merely illustrative, and for example, the division of the modules or units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. A vehicle target area determination method, applied to a vehicle styling phase for pedestrian leg protection, comprising:
acquiring CAS data of a vehicle body model and a position of a model parting;
dividing the vehicle body model into a plurality of virtual sub-models according to the CAS data and the positions of the model parting seams, and respectively setting model parameters for each virtual sub-model to obtain the virtual vehicle body model with the set model parameters;
adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to a preset whole vehicle arrangement scheme and the positions of the model parting seams to obtain a virtual vehicle anti-collision model;
and carrying out virtual simulation analysis on the virtual vehicle anti-collision model based on the constructed leg collision working condition, and determining a target area of the current vehicle body shape.
2. The vehicle target area determination method according to claim 1, wherein the individually performing modeling parameter setting for each virtual sub-modeling includes:
the material and thickness of each virtual sub-figure is set.
3. The vehicle target area determination method according to claim 1, wherein the dividing of the body figure into a plurality of virtual sub-figures according to the CAS data and the position of the figure split includes:
obtaining a virtual vehicle body model according to the CAS data;
carrying out gridding processing on the virtual vehicle body model, and intercepting the virtual vehicle body model at a preset position to obtain a virtual vehicle body front end model;
and dividing the front end model of the virtual vehicle body according to the positions of the model parting seams to obtain a plurality of virtual sub-models.
4. The vehicle target area determining method of claim 3, wherein the plurality of virtual sub-configurations include virtual configurations corresponding to a hood, a fender, a headlight, a front bumper, and a lower grille, respectively.
5. The vehicle target area determination method according to any one of claims 1 to 4, wherein the virtual collision avoidance structure includes a virtual grille mounting plate and a virtual front collision avoidance beam assembly;
according to predetermineeing whole car arrangement scheme with the position of molding parting virtual anti-collision structure is added to virtual automobile body molding inside behind the molding parameter setting, obtains virtual vehicle collision avoidance model, includes:
determining the arrangement position of the virtual grid mounting plate and the arrangement position of the virtual front anti-collision beam assembly according to a preset whole vehicle arrangement scheme and the position of the modeling parting;
and adding a virtual anti-collision structure in the virtual vehicle body model after the model parameters are set according to the arrangement position of the virtual grid mounting plate and the arrangement position of the virtual front anti-collision beam assembly, and establishing boundary conditions and all degrees of freedom of constraint nodes to obtain a virtual vehicle anti-collision model.
6. The vehicle target area determination method according to claim 5, wherein the positions of the nodes include a hood rear section, a front combination lamp rear shell, a grille mounting plate rear section, a bumper beam rear section, and a front fender rear section.
7. A vehicle target area determination device, applied to a vehicle styling phase for pedestrian leg protection, comprising:
the acquisition module is used for acquiring CAS data of the vehicle body shape and the position of the shape parting;
the dividing module is used for dividing the vehicle body model into a plurality of virtual sub-models according to the CAS data and the positions of the model parting seams, and setting model parameters of each virtual sub-model respectively to obtain the virtual vehicle body model after the model parameters are set;
the anti-collision structure adding module is used for adding a virtual anti-collision structure into the virtual vehicle body model after the model parameters are set according to a preset whole vehicle arrangement scheme and the positions of the model parting joints to obtain a virtual vehicle anti-collision model;
and the simulation analysis module is used for carrying out virtual simulation analysis on the virtual vehicle anti-collision model based on the constructed leg collision working condition and determining the target area of the current vehicle body shape.
8. The vehicle target area determination apparatus of claim 7, wherein the partitioning module is further configured to:
the material and thickness of each virtual sub-figure is set.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the vehicle target area determination method according to any one of claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by one or more processors, implements the steps of the vehicle target area determination method according to any one of claims 1 to 6.
CN202110348312.1A 2021-03-31 2021-03-31 Vehicle target area determining method and device and terminal equipment Pending CN114580074A (en)

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Application Number Priority Date Filing Date Title
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Country Link
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