CN114491784A - Body-in-white model modeling method and system - Google Patents
Body-in-white model modeling method and system Download PDFInfo
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Abstract
The invention provides a body-in-white model modeling method, which comprises the steps of constructing parameterized conceptual body module data without assembly information and parameterized assembly data with assembly information according to a CAE finite element model; constructing a conceptual automobile body modular data and an assembly data storage structure tree to respectively and correspondingly store conceptual automobile body module data and assembly data; extracting data from the two structure trees according to a concept automobile body design plan, assembling to obtain a white automobile body model, and performing parameter adjustment on the white automobile body model; and when the white automobile body model after parameter adjustment meets the design plan requirements, automatically generating a CAE simulation model and obtaining a final white automobile body model after the simulation performance is verified to be qualified. By implementing the method, the problems of the existing implicit parametric white body modeling method can be solved, the repeated modeling work is reduced to the maximum extent, the development speed and efficiency of the white body concept design stage are improved, and the complete parametric design and forward development effects are realized.
Description
Technical Field
The invention relates to the field of automobile body structure design, in particular to a body-in-white model modeling method and system.
Background
At present, a modeling method adopted by a whole vehicle enterprise in a vehicle body concept design stage is to create a detailed CAD vehicle body model first and then convert the CAD model into a CAE simulation analysis model for performance analysis and verification, but the modeling period of the method is long, and a geometric model and the CAE simulation analysis model need to be repeatedly changed when a design scheme is changed, so that the method not only has large manpower input and long scheme calculation time, but also is limited by design experience and methods, and a designer needs to achieve an expected optimization effect through repeated trial and error, so that the design has blindness and uncertainty.
In order to overcome the problems of the conventional modeling method, an implicit parameterized body-in-white modeling method based on SFE-CONCEPT software is introduced into a vehicle body CONCEPT design stage by a whole vehicle enterprise, and although the method has the advantages of full-parameterized driving and automatic generation of finite element grids, the problem of low repeated utilization rate of parameterized models still exists, and the effects of forward development of parameterized model borrowing, parameter change and optimization and scheme verification cannot be achieved.
Therefore, aiming at the problem of the implicit parameterization body-in-white modeling method of the SFE-CONCEPT software, a body-in-white model modeling method is needed, so that repetitive modeling work can be reduced to the maximum extent, the development speed and efficiency of the body-in-white conceptual design stage are improved, and complete parameterization design and forward development effects are realized.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a body-in-white model modeling method and system, which can overcome the problems of the existing implicit parameterized body-in-white modeling method, reduce repeated modeling work to the maximum extent, improve the development speed and efficiency of the body-in-white conceptual design stage, and realize complete parameterized design and forward development effect.
In order to solve the technical problem, an embodiment of the present invention provides a body-in-white model modeling method, including the following steps:
constructing parameterized conceptual car body module data and assembly data according to the CAE finite element model; each concept car body module data is named according to a preset hierarchical naming mode; each assembly data corresponds to an assembly area pre-divided by the body-in-white and contains assembly information;
constructing a concept car body module data storage structure tree corresponding to the preset hierarchical naming mode to store each concept car body module data, and constructing an assembly data storage structure tree corresponding to an assembly region structure pre-divided by the body-in-white to store each assembly data;
respectively extracting corresponding concept car body module data and assembly data from the concept car body module data storage structure tree and the assembly data storage structure tree according to a preset concept car body design plan to obtain a white car body model, and performing parameter adjustment on the concept car body module data or/and the assembly data in the white car body model according to a data modification instruction input by a user to obtain a parameter-adjusted white car body model;
and when the white body model after parameter adjustment meets the requirements of the preset concept body design plan, automatically generating a CAE simulation model by the white body model after parameter adjustment, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
Wherein the method further comprises the steps of:
when the white body model after the parameter adjustment does not meet the requirement of the preset concept body design plan, newly building concept body module data except the concept body module data contained in the white body model after the parameter adjustment according to the preset concept body design plan, assembling the newly built concept body module data into the white body model after the parameter adjustment to obtain a complete white body model, further enabling the complete white body model to automatically generate a CAE simulation model, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
Wherein the method further comprises the steps of:
and constructing a corresponding data retrieval call BOM information table according to each concept body module data stored in the concept body module data storage structure tree and each assembly data stored in the assembly data storage structure tree.
The BOM information table for data retrieval calling comprises the following characteristic items:
the system comprises a vehicle model code, a corresponding hierarchy and a name of module data, a module schematic diagram, a module main section pattern, a module main section position and quantity schematic diagram, a module lap joint pattern, a common section pattern between a module and surrounding modules, a module main structure, a database module calling requirement, whether a system description is stored, parameterized module creating and updating date, a module creating person and a responsible person, a module state and module finite element attributes.
The hierarchical naming mode adopts a standard format of level 1/level 2/level 3/level 4/level 5/level 6/serial number in sequence and does not contain assembly information; wherein, level 1 corresponds to left and right half car, level 2 corresponds to upper and lower automobile body, level 3 corresponds to the assembly, level 4 corresponds to the module, level 5 corresponds to the submodule piece, level 6 corresponds to preceding well back/reinforcing plate/bolt.
The assembly area of the body-in-white is divided into a top cover assembly, a front side wall assembly, a rear side wall assembly, a front cabin assembly, a front floor assembly and a rear floor assembly.
The performance verification of the CAE simulation model comprises bending stiffness performance verification, collision safety performance verification, NVH performance verification and strength performance verification.
The embodiment of the invention also provides a body-in-white model modeling system, which comprises a parameterized module data construction unit, a storage structure tree construction and storage unit, an initial model construction and adjustment unit and a first simulation output body-in-white model unit; wherein the content of the first and second substances,
the parameterized module data construction unit is used for constructing parameterized conceptual car body module data and assembly data according to the CAE finite element model; each concept car body module data is named according to a preset hierarchical naming mode and does not contain assembly information; each assembly data corresponds to an assembly area pre-divided by the body-in-white and contains assembly information;
the storage structure tree construction and storage unit is used for constructing a concept car body module data storage structure tree corresponding to the preset hierarchical naming mode so as to store each concept car body module data, and constructing an assembly data storage structure tree corresponding to an assembly area structure pre-divided by the white car body so as to store each assembly data;
the initial model building and adjusting unit is used for respectively extracting corresponding concept car body module data and assembly data from the concept car body module data storage structure tree and the assembly data storage structure tree according to a preset concept car body design plan to assemble a white car body model, and performing parameter adjustment on the concept car body module data or/and the assembly data in the white car body model according to a data modification instruction input by a user to obtain the parameter-adjusted white car body model;
and the first simulation output white body model unit is used for enabling the white body model after parameter adjustment to automatically generate a CAE simulation model when detecting that the white body model after parameter adjustment meets the requirement of the preset concept body design plan, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
Wherein, still include:
and the second simulation output white body model unit is used for newly building conceptual body module data except the conceptual body module data contained in the parameter-adjusted white body model according to the preset conceptual body design plan when the white body model after parameter adjustment does not meet the requirement of the preset conceptual body design plan, assembling the newly-built conceptual body module data into the parameter-adjusted white body model to obtain a complete white body model, further enabling the complete white body model to automatically generate a CAE simulation model, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
Wherein, still include:
and the data retrieval calling BOM information table construction unit is used for constructing a corresponding data retrieval calling BOM information table according to each concept body module data stored in the concept body module data storage structure tree and each assembly data stored in the assembly data storage structure tree.
The embodiment of the invention has the following beneficial effects:
1. the method creates general full-parametric driving and modular data (parametric conceptual car body module data and assembly data) which can be repeatedly used in SFE-CONCEPT software according to strict modeling rules, assembles the parametric module data to obtain a complete parametric white car body model, and can also easily perform module, assembly replacement and parameter adjustment on the white car body model, thereby reducing repeated modeling work to the maximum extent, improving data reuse efficiency and further improving development speed and efficiency of a white car body conceptual design stage;
2. the method is characterized in that a parametric concept body module data of the body-in-white structure and a concept body module data storage structure tree are created based on a hierarchical naming mode with distinct hierarchy, namely the parametric concept body module data are stored by taking the concept body module data as a minimum storage unit according to 6 levels, and the characteristics of module reuse and parameter change of a parametric body-in-white model are better met;
3. the invention can continuously create and expand conceptual body module data to form a positive cycle, when the conceptual body module data is enough, only the calling, parameter modification and total assembly of the conceptual body module data and assembly data are needed, and finally the effect of forward development of parametric model borrowing-parameter modification and optimization-scheme verification is achieved;
4. the invention adopts the data retrieval to call the BOM information table, can conveniently retrieve and check the information of the assembly data and the conceptual vehicle body module data, and can carry out systematic and standardized management on the operations of data storage, data export (calling), data updating and the like of the data system through the structured data management mode, so that the operation, maintenance and expansion of the data system can be carried out orderly.
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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 used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
FIG. 1 is a flow chart of a body-in-white model modeling method provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a body-in-white model modeling system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a body-in-white model modeling method provided in an embodiment of the present invention includes the following steps:
step S1, constructing parameterized conceptual car body module data and assembly data according to the CAE finite element model; each concept car body module data is named according to a preset hierarchical naming mode and does not contain assembly information; each assembly data corresponds to an assembly area pre-divided by the body-in-white and contains assembly information;
the specific process is to create parameterized conceptual body module data and assembly data by referring to a CAE finite element model. At the moment, parameterized conceptual car body module data is consistent with reference CAE model data as much as possible, the parameterized conceptual car body module data comprises part structural forms, welding relations, part numbers, material thicknesses, material properties and the like, and performance errors of a parameterized module data car body and the reference CAE model are used as technical indexes for evaluating and controlling the precision of the parameterized module data car body. Naming each parameterized conceptual car body module data in a hierarchical naming mode according to a standard format of hierarchy 1/hierarchy 2/hierarchy 3/hierarchy 4/hierarchy 5/hierarchy 6/serial number in sequence, wherein each conceptual car body module data does not contain assembly information; wherein, level 1 corresponds to left and right half car, level 2 corresponds to upper and lower automobile body, level 3 corresponds to the assembly, level 4 corresponds to the module, level 5 corresponds to the submodule piece, level 6 corresponds to preceding well back/reinforcing plate/bolt.
The assembly area of the body-in-white is divided into a top cover assembly, a front side wall assembly, a rear side wall assembly, a front cabin assembly, a front floor assembly and a rear floor assembly, so that parameterized assembly data can be named correspondingly according to the assembly area divided in advance by the body-in-white, and each assembly data contains assembly information.
Because the parameterized conceptual car body module data and the assembly data form the basis of the car body structure modular data system, the modular data system has the advantage that all module data can be permanently and repeatedly used once being created, and therefore, the data scheme can be updated only by simply changing parameters during later calling. Therefore, a complete data system needs to contain as many part structure schemes as possible, so that the development efficiency of the concept car body can be greatly improved only by module retrieval, scheme selection, parameter change and other work when the concept car body is designed on the basis of the complete data system.
Step S2, constructing a concept car body module data storage structure tree corresponding to the preset hierarchical naming mode to store each concept car body module data, and constructing an assembly data storage structure tree corresponding to an assembly area structure pre-divided by the body-in-white to store each assembly data;
the specific process is that in the data storage system, the data of each parameterized concept car body module is stored according to the hierarchical naming mode of the parameterized concept car body module data, so that a corresponding storage structure tree needs to be created in the storage system according to the hierarchical naming mode before storage, the structure tree and the stored data are in one-to-one correspondence, and the concept car body module data can be conveniently searched and repeatedly called in the later stage; similarly, each assembly data is stored according to the naming mode of the assembly data, and therefore a corresponding storage structure tree needs to be created in a storage system according to an assembly region structure divided in advance by the body-in-white, so that the structure tree corresponds to the stored data one by one, and assembly data can be conveniently searched and repeatedly called in the later stage.
Therefore, each conceptual body module data and each assembly data are used as the minimum storage unit, so that the conceptual body module data of the structure level and the part level which do not contain the assembly information are stored in the corresponding position of the conceptual body module data storage structure tree (the position is the last level of the structure tree), and the assembly data containing the assembly information are stored in the corresponding position of the assembly data storage structure tree (the position is the only level of the structure tree).
It can be understood that, in order to achieve effective management and maintenance of the data storage system, the corresponding data retrieval call BOM information table is written, and therefore, the method further includes the following steps:
and constructing a corresponding data retrieval call BOM information table according to each concept body module data stored in the concept body module data storage structure tree and each assembly data stored in the assembly data storage structure tree.
The BOM information table for data retrieval and calling comprises all necessary information of parameterized modules and assemblies stored in the system, and the included characteristic items specifically comprise vehicle model codes, corresponding levels and names of the modules, module diagrams (with part numbers or without part numbers), module main section styles, module main section position/quantity diagrams, module lap joint styles, module main structures, database module calling requirements, whether system descriptions are stored, creation and update dates of the parameterized modules, module creators and responsible persons, module states (newly-created modules/module borrowing/module modifying), module finite element attributes and the like.
Wherein, the model code: the model code of the created full-vehicle-level parameterized white body model is determined by the project; module hierarchy and naming: the parameterized module naming must be determined according to specifications; module view (part number/no part number): the parameterized module schematic diagram is convenient for database users to know the states of the parameterized modules and create the face complementing condition; main section style of module: the basic style of the main section of the parameterized module comprises characteristic information of the section of the parameterized module; module main cross-section position/number: the positions of the sections of the parameterized modules and the number of main sections of the parameterized modules are created; module lap joint pattern: the connection mode of the parameterized module and the surrounding modules comprises the use of a common section or the use of an assembly connection mode; common cross-sectional style: if the parameterized module is connected with the surrounding modules by using the common section, displaying the basic characteristic information of the common section; the module main structure: indicating the part number and the part name of the structure expressed by the parameterized module and the module grid division result; the database module calls for requirements: the cross section data and parameters, design process data and other preconditions required to be provided by the parameterization module in the calling and changing process are input, so that database users can conveniently provide data according to the table in the calling parameterization module modifying process, and the parameterization module is modified and updated; whether to store in the system: determining whether parts and structural level modules which are not stored exist under the assembly data; parameterization module creation and update date: determining a time state of the parameterized module; module creator and responsible person: recording the creation personnel and the later data management personnel of each parameterized module; newly building a module/borrowing a module/modifying a module: and determining whether the state of the module is changed by the module related to other vehicle types, and marking the source of the module in the remark. It should be noted that the parameterization module is a parameterized conceptual body module.
Step S3, extracting corresponding concept car body module data and assembly data from the concept car body module data storage structure tree and the assembly data storage structure tree respectively according to a preset concept car body design plan to obtain a white car body model, and performing parameter adjustment on the concept car body module data or/and the assembly data in the white car body model according to a data modification instruction input by a user to obtain a parameter-adjusted white car body model;
the method comprises the steps of firstly, according to a concept automobile body design plan which is provided and imported into computer equipment by a design department in advance, selectively and preferably selecting corresponding concept automobile body module data and assembly data from the concept automobile body module data existing in a concept automobile body module data storage structure tree and the general assembly data in an assembly data storage structure tree as basic data of a newly designed automobile type, assembling the basic data together to obtain a white automobile body model, and completing the process only by 1-3 working days for a single person.
And then, according to input information such as a reference section, a modeling CAS surface, a vehicle body hard point and the like provided by a design department (at this time, a data modification instruction input by a user is a modification instruction used for matching one or more data of the reference section, the modeling CAS surface and the vehicle body hard point), parameter modification is carried out on the called assembly data or/and concept vehicle body module data, so that the assembly data or/and each concept vehicle body module data are well matched with the corresponding input information, and the data are adjusted to a preset design position, and then the white vehicle body model after parameter adjustment is obtained.
And step S4, when the white body model after parameter adjustment meets the requirements of the preset concept vehicle body design plan, enabling the white body model after parameter adjustment to automatically generate a CAE simulation model, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
The method comprises the specific processes that when a white body model after parameter adjustment meets the requirements of a preset concept body design plan, the white body model after parameter adjustment automatically generates a CAE simulation model, then simulation calculation is carried out, the performance (including but not limited to body performances such as bending rigidity, collision safety, NVH and strength) of the white body model is verified and evaluated, and after the performance is verified to be qualified, a final white body model is obtained.
In the embodiment of the invention, parameterized conceptual car body module data is required to be newly established when a new part structure form is met due to the fact that a design scheme is not rich enough, data of an original white car body model of the newly established conceptual car body module data are assembled together, so that a complete parameterized white car body model is obtained, finally, a CAE simulation model is automatically generated based on the complete parameterized white car body model for simulation calculation, and a project target of CAE driving design of a newly established car type is completed. Thus, the method further comprises the steps of:
when the white body model after parameter adjustment does not meet the requirements of the preset concept body design plan, according to the preset concept body design plan, newly building concept body module data except the concept body module data contained in the white body model after parameter adjustment, assembling the newly built concept body module data into the white body model after parameter adjustment to obtain a complete white body model, further enabling the complete white body model to automatically generate a CAE simulation model, and obtaining a final white body model after the performance of the CAE simulation model is verified to be qualified.
It can be understood that, because the conceptual body module data is newly created, the update of the BOM information table for storage and data retrieval of the newly created module needs to be completed. The operation is a process of gradually expanding and enriching the modular data system, when the concept car body module data is enough, only the calling, parameter modification and total assembly of the concept car body module data and the assembly data are needed, and finally the forward development effect of parametric model borrowing-parameter changing and optimizing-scheme verification is achieved.
As shown in fig. 2, in an embodiment of the present invention, a body-in-white model modeling system is provided, which includes a parameterized module data building unit 110, a storage structure tree building and storing unit 120, an initial model building and adjusting unit 130, and a first simulation output body-in-white model unit 140; wherein the content of the first and second substances,
the parameterized module data construction unit 110 is configured to construct parameterized conceptual body module data and assembly data according to the CAE finite element model; each concept car body module data is named according to a preset hierarchical naming mode and does not contain assembly information; each assembly data corresponds to an assembly area pre-divided by the body-in-white and contains assembly information;
the storage structure tree constructing and storing unit 120 is configured to construct a conceptual body module data storage structure tree corresponding to the preset hierarchical naming mode to store each conceptual body module data, and construct an assembly data storage structure tree corresponding to an assembly region structure pre-divided by the body-in-white to store each assembly data;
the initial model building and adjusting unit 130 is configured to respectively extract corresponding concept vehicle body module data and assembly data from the concept vehicle body module data storage structure tree and the assembly data storage structure tree according to a preset concept vehicle body design plan, assemble the concept vehicle body module data and the assembly data to obtain a white vehicle body model, and perform parameter adjustment on the concept vehicle body module data or/and the assembly data in the white vehicle body model according to a data modification instruction input by a user to obtain a parameter-adjusted white vehicle body model;
the first simulation output body-in-white model unit 140 is configured to, when it is detected that the body-in-white model after parameter adjustment meets the requirement of the preset conceptual body design plan, automatically generate a CAE simulation model from the body-in-white model after parameter adjustment, and obtain a final body-in-white model after the performance of the CAE simulation model is verified to be qualified.
Wherein, white automobile body model modeling system still includes:
and a second simulation output body-in-white model unit 150, configured to, when it is detected that the parameter-adjusted body-in-white model does not meet the requirement of the preset concept body design plan, newly create, according to the preset concept body design plan, concept body module data other than the concept body module data included in the parameter-adjusted body-in-white model, and assemble the newly created concept body module data into the parameter-adjusted body-in-white model to obtain a complete body-in-white model, further enable the complete body-in-white model to automatically generate a CAE simulation model, and obtain a final body-in-white model after the performance verification of the CAE simulation model is qualified.
Wherein, white automobile body model modeling system still includes:
and the data retrieval calling BOM information table constructing unit 160 is configured to construct a corresponding data retrieval calling BOM information table according to each conceptual car body module data stored in the conceptual car body module data storage structure tree and each assembly data stored in the assembly data storage structure tree.
The embodiment of the invention has the following beneficial effects:
1. the method creates general full-parametric driving and modular data (parametric conceptual car body module data and assembly data) which can be repeatedly used in SFE-CONCEPT software according to strict modeling rules, assembles the parametric module data to obtain a complete parametric white car body model, and can also easily perform module, assembly replacement and parameter adjustment on the white car body model, thereby reducing repeated modeling work to the maximum extent, improving data reuse efficiency and further improving development speed and efficiency of a white car body conceptual design stage;
2. the method is characterized in that a parametric concept body module data of the body-in-white structure and a concept body module data storage structure tree are created based on a hierarchical naming mode with distinct hierarchy, namely the parametric concept body module data are stored by taking the concept body module data as a minimum storage unit according to 6 levels, and the characteristics of module reuse and parameter change of a parametric body-in-white model are better met;
3. the invention can continuously create and expand conceptual car body module data to form a positive cycle, when the conceptual car body module data is enough, only the calling, parameter modification and total assembly of the conceptual car body module data and assembly data are needed, and finally the effect of forward development of parameterized model calling, parameter modification and optimization and scheme verification is achieved;
4. the invention adopts the data retrieval to call the BOM information table, can conveniently retrieve and check the information of the assembly data and the conceptual vehicle body module data, and can carry out systematic and standardized management on the operations of data storage, data export (calling), data updating and the like of the data system through the structured data management mode, so that the operation, maintenance and expansion of the data system can be carried out orderly.
It should be noted that, in the foregoing system embodiment, each included system unit is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, the specific names of the functional units are only for the convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A body-in-white model modeling method, characterized in that the method comprises the steps of:
constructing parameterized conceptual car body module data and assembly data according to the CAE finite element model; each concept car body module data is named according to a preset hierarchical naming mode; each assembly data corresponds to an assembly area pre-divided by the body-in-white and contains assembly information;
constructing a concept vehicle body module data storage structure tree corresponding to the preset hierarchical naming mode to store each concept vehicle body module data, and constructing an assembly data storage structure tree corresponding to an assembly area structure which is divided in advance by the body in white to store each assembly data;
respectively extracting corresponding concept car body module data and assembly data from the concept car body module data storage structure tree and the assembly data storage structure tree according to a preset concept car body design plan to obtain a white car body model, and performing parameter adjustment on the concept car body module data or/and the assembly data in the white car body model according to a data modification instruction input by a user to obtain a parameter-adjusted white car body model;
and when the white body model after parameter adjustment meets the requirements of the preset concept body design plan, automatically generating a CAE simulation model by the white body model after parameter adjustment, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
2. The body-in-white modeling method of claim 1, further comprising the steps of:
when the white body model after the parameter adjustment does not meet the requirement of the preset concept body design plan, newly building concept body module data except the concept body module data contained in the white body model after the parameter adjustment according to the preset concept body design plan, assembling the newly built concept body module data into the white body model after the parameter adjustment to obtain a complete white body model, further enabling the complete white body model to automatically generate a CAE simulation model, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
3. The body-in-white modeling method of claim 1, further comprising the steps of:
and constructing a corresponding data retrieval call BOM information table according to each concept body module data stored in the concept body module data storage structure tree and each assembly data stored in the assembly data storage structure tree.
4. The body-in-white modeling method of claim 3, wherein the data retrieval call BOM information table includes the following characteristic items:
the model number, the corresponding hierarchy and the naming of module data, a module schematic diagram, a module main section pattern, a module main section position and quantity schematic diagram, a module lap joint pattern, a common section pattern between a module and surrounding modules, a module main structure, a database module calling requirement, whether a system description is stored, parameterized module creating and updating date, a module creating person and a responsible person, a module state and module finite element attributes.
5. The body-in-white modeling method according to claim 1, wherein the hierarchical naming manner adopts a standard format of hierarchical 1/hierarchical 2/hierarchical 3/hierarchical 4/hierarchical 5/hierarchical 6/serial number in order, and does not include assembly information; wherein, level 1 corresponds to left and right half car, level 2 corresponds to upper and lower automobile body, level 3 corresponds to the assembly, level 4 corresponds to the module, level 5 corresponds to the submodule piece, level 6 corresponds to preceding well back/reinforcing plate/bolt.
6. The method of modeling a body in white according to claim 1, wherein the assembly area of the body in white is divided into a roof assembly, a front side wall assembly, a rear side wall assembly, a front cabin assembly, a front floor assembly and a rear floor assembly.
7. The body-in-white model modeling method according to claim 1 or 2, wherein the performance verification of the CAE simulation model includes bending stiffness performance verification, collision safety performance verification, NVH performance verification, and strength performance verification.
8. A body-in-white model modeling system is characterized by comprising a parameterization module data construction unit, a storage structure tree construction and storage unit, an initial model construction and adjustment unit and a first simulation output body-in-white model unit; wherein the content of the first and second substances,
the parameterized module data construction unit is used for constructing parameterized conceptual car body module data and assembly data according to the CAE finite element model; each concept car body module data is named according to a preset hierarchical naming mode and does not contain assembly information; each assembly data corresponds to an assembly area pre-divided by the body-in-white and contains assembly information;
the storage structure tree construction and storage unit is used for constructing a concept car body module data storage structure tree corresponding to the preset hierarchical naming mode so as to store each concept car body module data, and constructing an assembly data storage structure tree corresponding to an assembly area structure pre-divided by the white car body so as to store each assembly data;
the initial model building and adjusting unit is used for respectively extracting corresponding concept car body module data and assembly data from the concept car body module data storage structure tree and the assembly data storage structure tree according to a preset concept car body design plan to assemble a white car body model, and performing parameter adjustment on the concept car body module data or/and the assembly data in the white car body model according to a data modification instruction input by a user to obtain the parameter-adjusted white car body model;
and the first simulation output white body model unit is used for enabling the white body model after parameter adjustment to automatically generate a CAE simulation model when detecting that the white body model after parameter adjustment meets the requirement of the preset concept body design plan, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
9. The body-in-white modeling system of claim 8, further comprising:
and the second simulation output white body model unit is used for newly building conceptual body module data except the conceptual body module data contained in the parameter-adjusted white body model according to the preset conceptual body design plan when the white body model after parameter adjustment does not meet the requirement of the preset conceptual body design plan, assembling the newly-built conceptual body module data into the parameter-adjusted white body model to obtain a complete white body model, further enabling the complete white body model to automatically generate a CAE simulation model, and obtaining a final white body model after the performance verification of the CAE simulation model is qualified.
10. The body-in-white modeling system of claim 8, further comprising:
and the data retrieval calling BOM information table construction unit is used for constructing a corresponding data retrieval calling BOM information table according to each concept body module data stored in the concept body module data storage structure tree and each assembly data stored in the assembly data storage structure tree.
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