CN107229794B - Model construction system based on CAE and VR and management method thereof - Google Patents
Model construction system based on CAE and VR and management method thereof Download PDFInfo
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- CN107229794B CN107229794B CN201710392094.5A CN201710392094A CN107229794B CN 107229794 B CN107229794 B CN 107229794B CN 201710392094 A CN201710392094 A CN 201710392094A CN 107229794 B CN107229794 B CN 107229794B
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Abstract
The invention discloses a model building system based on CAE and VR and a management method thereof, the model building system comprises a CAE mechanical model, a data exchange module, VR interactive display equipment and a model editing module, designers call visual data corresponding to the CAE mechanical model through the VR interactive display equipment, modify parameters through the model editing module, and feed the visual data corresponding to the modified parameters back to the CAE mechanical model through the data exchange module. The model building system based on the CAE and the VR and the building management method thereof can present the stress condition of the CAE model in a virtual reality mode, so that designers can optimize the model conveniently, and can create or modify the model through the model editing module according to the actual engineering requirements, so that the engineering requirements are met, errors in modeling are reduced, and the working efficiency is improved.
Description
Technical Field
The invention relates to the field of CAE model construction, in particular to a model construction system based on CAE and VR and a management method thereof.
Background
With the rapid advance of computers and information technology, the role played by CAE in enterprise research and development is becoming more and more important. Digital research and development with digital prototype collaborative design technology as the core has gradually merged into each stage of product design. At present, the numerical research and development technology is developing from single discipline to multidiscipline and subsystem-level simulation to system-level simulation and module-level isolated design to system-level knowledge fusion collaborative design. Especially for the development of complex products, collaborative design applications are more desirable.
With the continuous improvement of engineering complexity, models are more and more complex, and the difficulty of modeling is increased, which leads to the increase of cost, because the prior modeling technology with complex models is more and more difficult to adapt to the requirements of the improvement of engineering complexity and the precision of the models, particularly for some hidden positions of the models with complex structures, the specific space structures of the models are difficult to imagine during modeling, which often leads to errors and results in wrong calculation results.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a CAE and VR-based model construction system and a management method thereof, and the stress condition of a CAE model can be presented in a virtual reality mode through the system and the management method, so that designers can optimize the model conveniently, the actual requirements of engineering are met, errors in modeling are reduced, and the working efficiency is improved.
A model building system based on CAE and VR specifically comprises:
the CAE mechanical model is a CAE mechanical simulation model obtained by establishing a three-dimensional building information model in a BIM system according to a CAD design drawing and then reconstructing the three-dimensional building information model through a grid simplification system;
the data exchange module is internally stored with a CAE mechanical model and visual data corresponding to the CAE mechanical model and called by VR interactive display equipment;
the VR interactive display equipment is used for calling visual data corresponding to the CAE mechanical model from the data exchange module and presenting a design effect in a virtual reality mode;
and the model editing module is used for calling visual data corresponding to the CAE mechanical model through VR interactive display equipment by designers, modifying parameters through the model editing module, and feeding the visual data corresponding to the modified parameters back to the CAE mechanical model through the data exchange module.
Preferably, the CAE mechanical model includes parameters corresponding to the model and visualization data corresponding to the model.
Preferably, the grid simplification system comprises a model filtering module, a component geometric data acquisition module, a component material parameter acquisition module, a grid reconstruction module and a data transmission module;
the model filtering module is used for filtering out main body structures stressed by beams, columns, bearing walls and the like in the BIM building information model;
the acquisition component geometric data module automatically acquires three-dimensional geometric parameters of the components in the main body structure after the components are filtered by the model;
the acquisition component material parameter module is used for automatically acquiring material parameter information of the components in the main body structure after the components are filtered by the model;
the grid reconstruction module is used for reconstructing grids in the original grids in the BIM building information model so as to adapt to CAE mechanical simulation;
and the real-time data transmission module is used for transmitting the change information to the grid simplification system through the real-time data transmission module when the parameters in the BIM building information model change, recalculating the BIM information model by the grid simplification system to finally obtain a new CAE mechanical simulation model, and feeding back the calculated mechanical information to the BIM information model for display after model mechanical simulation.
Preferably, the data exchange module comprises a format conversion module, and the format conversion module converts the CAE model into an addable virtual reality component to realize a format type of virtual implementation.
Preferably, the VR interactive display equipment is provided with a data conversion interface, the data conversion interface is connected with the data exchange module, and the visual data corresponding to the CAE mechanical simulation model is called from the data exchange module through the data conversion interface.
The embodiment of the invention also provides a reconstruction method based on the grid simplified system, which specifically comprises the following steps:
a. the grid simplifying system calls a BIM building information model through a real-time data transmission module;
b. filtering by a model filtering module to obtain a building main structure model;
c. the acquisition component geometric data module automatically acquires a component in the main body structure to acquire three-dimensional geometric parameters of the component;
d. the component material parameter acquisition module is used for automatically acquiring the material parameters of the components in the main body structure;
e. reconstructing the original grid of the BIM building three-dimensional geometric model through a grid reconstruction module;
f. and the grid simplifying system leads the model obtained by the processing in the steps into CAE through a real-time data transmission module for mechanical simulation.
The embodiment of the invention also provides a construction method based on the CAE mechanical model, which specifically comprises the following steps:
1) reconstructing a BIM building three-dimensional geometric model through a grid simplification system, and importing the simplified BIM three-dimensional model into a CAE mechanical simulation system;
2) extracting data information in a BIM information model system, judging the attribute of the change information, transmitting data influencing the mechanical simulation to a CAE mechanical simulation system, and driving the CAE mechanical simulation system to update;
3) and feeding back the mechanical information obtained by the updated CAE mechanical simulation model to the BIM information model, and displaying the calculated mechanical information from the BIM information model.
The embodiment of the invention also provides a construction management method of the model construction system based on CAE and VR, which comprises the following steps:
s1, modeling by designers in a computer, then performing mechanical simulation, and after the computation is completed, sending the models to a data exchange module for storage by the designers, wherein the models comprise parameters corresponding to the models and visual data corresponding to the models;
s2, calling visual data corresponding to the model from the data exchange module through VR interactive display equipment by a customer, presenting the stress condition of the whole model to a designer in a virtual reality mode, seeing the change of the model after stress personally, finding the maximum stress and strain point of the whole model, and optimizing the existing structure in real time.
S3, the designer optimizes the most stressed position in the model editing module, transmits the parameters to be modified to the data exchange module through VR interactive equipment, then the parameters are fed back to the CAE by the data exchange module, meanwhile, the model parameters in the CAE are correspondingly changed, then the mechanical simulation is carried out, and finally, the newly obtained model and the visual parameters are displayed through VR interactive display equipment for the designer to refer to.
Preferably, if the stress condition of the modified CAE mechanical model does not meet the engineering requirement, repeating S2-S3 until the design requirement is met, and finishing the construction of the final CAE mechanical model.
Compared with the prior art, the invention has the following beneficial effects:
1. the model building system based on the CAE and the VR and the building management method thereof can present the stress condition of the CAE model in a virtual reality mode, so that designers can optimize the model conveniently, and can create or modify the model through the model editing module according to the actual engineering requirements, so that the engineering requirements are met, errors in modeling are reduced, and the working efficiency is improved.
2. The invention realizes the interaction between the customer and the virtual reality, and the related materials and components are more comprehensive and real to watch and replace, and simultaneously the CAE mechanical model information is quickly led into the VR virtual reality system, so that the customer can feel the internal structure of the building personally, and the operations of parameter information inquiry, parameter modification and the like are carried out through VR interactive display equipment.
Drawings
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 described below, 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 can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a CAE and VR based model building system according to the present invention;
FIG. 2 is a schematic diagram of the grid reduction system of the present invention;
FIG. 3 is a schematic diagram of a reconstruction method based on a mesh reduction system according to the present invention;
FIG. 4 is a process flow diagram of a method for constructing a CAE and VR based model construction system according to the present invention;
FIG. 5 is a schematic structural diagram of the CAE mechanical model of the present invention not imported into the system through the mesh reduction system;
FIG. 6 is a schematic diagram of the CAE mechanical model three-dimensional meshing viewed through VR interactive devices according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, an embodiment of the present invention provides a model building system based on CAE and VR, which specifically includes the following components: the CAE mechanical model is a CAE mechanical simulation model obtained by establishing a three-dimensional building information model in a BIM system according to a CAD design drawing and then reconstructing the three-dimensional building information model through a grid simplification system; the data exchange module is internally stored with a CAE mechanical model and visual data corresponding to the CAE mechanical model and called by VR interactive display equipment; the VR interactive display equipment is used for calling visual data corresponding to the CAE mechanical model from the data exchange module and presenting a design effect in a virtual reality mode; and the model editing module is used for calling visual data corresponding to the CAE mechanical model through VR interactive display equipment by designers, modifying parameters through the model editing module, and feeding the visual data corresponding to the modified parameters back to the CAE mechanical model through the data exchange module.
The CAE mechanical model is a CAE mechanical simulation model obtained by establishing a three-dimensional building information model in a BIM system according to a CAD design drawing and then reconstructing the three-dimensional building information model through a grid simplification system, because the existing BIM building geometric model cannot be directly used for CAE mechanical simulation, because the BIM building three-dimensional geometric model contains a lot of building detail information such as small holes, small grooves, small bosses and the like, the information can cause great influence on the grid of the CAE system, if the simplification processing is not carried out on the grid, the simulation speed and precision are seriously influenced, and local distortion units can cause huge errors of a calculation result, and even mislead a designer to obtain an error conclusion (FIG. 5 is the CAE mechanical model which is not led into the system through the grid simplification system).
As shown in fig. 2. The grid simplifying system comprises a model filtering module, a component geometric data acquiring module, a component material parameter acquiring module, a grid reconstructing module and a data transmission module; the model filtering module filters out main body structures of stress of beams, columns, bearing walls and the like in the BIM building information model due to the fact that the BIM building information model comprises a plurality of parts which are not needed by mechanical simulation, and the filtering function of the model is developed mainly by using a function provided by Revit in the embodiment of the invention; the module for acquiring geometric data of the component automatically acquires three-dimensional geometric parameters of the component in the main structure after filtering through the model, and the geometric data of the component is read mainly by using an element. The component material parameter acquisition module is used for automatically acquiring material parameter information of the components in the main body structure after the components are filtered by the model; the grid reconstruction module is used for reconstructing grids in the original grids in the BIM building information model so as to adapt to CAE mechanical simulation; when the information parameters in the BIM building information model change, the real-time data transmission module transmits the change information to the grid simplification system, the grid simplification system recalculates the BIM information model to finally obtain a new CAE mechanical simulation model, and after the model is subjected to mechanical simulation, the mechanical information obtained by calculation is fed back to the BIM information model to be displayed (FIG. 6 is a structural schematic diagram of three-dimensional grid division of the CAE mechanical model which is viewed through VR interaction equipment after the grid simplification system passes through). Preferably, the CAE mechanical model further includes parameters corresponding to the model and visualization data corresponding to the model.
Referring to fig. 3, an embodiment of the present invention further provides a reconstruction method based on a mesh simplification system, which specifically includes the following steps:
a. the grid simplifying system calls a BIM building information model through a real-time data transmission module;
b. filtering by a model filtering module to obtain a building main structure model;
c. the acquisition component geometric data module automatically acquires a component in the main body structure to acquire three-dimensional geometric parameters of the component;
d. the component material parameter acquisition module is used for automatically acquiring the material parameters of the components in the main body structure;
e. reconstructing the original grid of the BIM building three-dimensional geometric model through a grid reconstruction module;
f. and the grid simplifying system leads the model obtained by the processing in the steps into CAE through a real-time data transmission module for mechanical simulation.
The following embodiment of the present invention further provides a method for constructing a reconstructed CAE mechanical model based on a mesh simplification system, which specifically includes the following steps:
1) reconstructing a BIM building three-dimensional geometric model through a grid simplification system, and importing the simplified BIM three-dimensional model into a CAE mechanical simulation system;
2) extracting data information in a BIM information model system, judging the attribute of the change information, transmitting data influencing the mechanical simulation to a CAE mechanical simulation system, and driving the CAE mechanical simulation system to update;
3) and feeding back the mechanical information obtained by the updated CAE mechanical simulation model to the BIM information model, and displaying the calculated mechanical information from the BIM information model.
The data exchange module is stored with a CAE mechanical model, and comprises parameters corresponding to the CAE mechanical model and visual data corresponding to the CAE mechanical model; supplying VR mutual display device to call the visual data that corresponds with CAE mechanics model, and receiving the visual data that the mutual display device of VR returned and that correspond with CAE mechanics model through the modification, and with should through the visual data feedback to CAE mechanics model that corresponds with CAE mechanics model through the modification in, simultaneously, the data exchange module still contains the format conversion module, turns into the CAE mechanics model can add virtual reality subassembly, realizes the format type of virtual realization.
The VR interaction display equipment is provided with a data conversion interface (not marked in the figure), the data conversion interface is connected with the data exchange module, visual data corresponding to the CAE mechanical model is called from the data exchange module through the data conversion interface, the design effect is presented in a virtual reality mode, and designers modify the visual data of the CAE mechanical model according to the actual needs of specific engineering and return the modified data to the data exchange module.
And the model editing module 4 is used for calling the visual data corresponding to the CAE mechanical model by designers through VR interactive display equipment, modifying parameters by using VR interactive equipment if modification is needed, feeding the modified visual data corresponding to the CAE mechanical model back to the CAE through the data exchange module, calculating the new data, and displaying the calculated visual data through the VR interactive display equipment in time.
The embodiment of the invention provides a construction management method of a model construction system based on CAE and VR, which comprises the following steps:
s1, modeling by designers in a computer, then performing mechanical simulation, and after the computation is completed, sending the models to a data exchange module for storage, wherein the models comprise parameters corresponding to the models and visual data corresponding to the models;
s2, calling visual data corresponding to the model from the data exchange module through VR interactive display equipment by a client, presenting the stress condition of the whole model to a designer in a virtual reality mode, seeing the change of the model after stress personally, easily finding the maximum stress and strain point of the whole model, and optimizing the existing structure in real time;
and S3, transmitting the parameters to be modified to the data exchange module through VR interactive equipment, feeding back the parameters to the CAE by the data exchange module, changing the model parameters in the CAE correspondingly, performing mechanical simulation, and displaying the obtained model and the visual parameters through VR interactive display equipment for the designer to refer to.
S4, and in step S3, if the stress condition of the modified CAE mechanical model does not meet the engineering requirement, repeating S2-S3 until the design requirement is met, and finally completing the construction of the CAE mechanical model.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A model building system for CAE and VR, comprising:
the CAE mechanical model is a CAE mechanical simulation model obtained by establishing a three-dimensional building information model in a BIM system according to a CAD design drawing and then reconstructing the three-dimensional building information model through a grid simplification system;
the data exchange module is internally stored with a CAE mechanical model and visual data corresponding to the CAE mechanical model and called by VR interactive display equipment;
the VR interactive display equipment is used for calling visual data corresponding to the CAE mechanical model from the data exchange module and presenting a design effect in a virtual reality mode;
the model editing module is used for calling visual data corresponding to the CAE mechanical model through VR interactive display equipment by a designer, modifying parameters through the model editing module, and feeding the visual data corresponding to the modified parameters back to the CAE mechanical model through the data exchange module;
the grid simplifying system comprises a model filtering module, a component geometric data acquiring module, a component material parameter acquiring module, a grid reconstructing module and a data transmission module;
the model filtering module is used for filtering out the main body structures stressed by the beams, the columns and the bearing walls in the BIM building information model;
the acquisition component geometric data module automatically acquires three-dimensional geometric parameters of the components in the main body structure after the components are filtered by the model;
the acquisition component material parameter module is used for automatically acquiring material parameter information of the components in the main body structure after the components are filtered by the model;
the grid reconstruction module is used for reconstructing grids in the original grids in the BIM building information model so as to adapt to CAE mechanical simulation;
the real-time data transmission module is used for transmitting the change information to the grid simplification system through the real-time data transmission module when the parameters in the BIM building information model change, recalculating the BIM information model by the grid simplification system to finally obtain a new CAE mechanical simulation model, and feeding back the calculated mechanical information to the BIM information model for display after model mechanical simulation;
2. the model building system for CAE and VR as claimed in claim 1, wherein: the CAE mechanical model includes parameters corresponding to the model and visualization data corresponding to the model.
3. The model building system for CAE and VR as claimed in claim 1, wherein: the data exchange module comprises a format conversion module, and the format conversion module converts the CAE model into an addable virtual reality component to realize a format type of virtual implementation.
4. The model building system for CAE and VR as claimed in claim 1, wherein: and the VR interactive display equipment is provided with a data conversion interface, the data conversion interface is connected with the data exchange module, and the visual data corresponding to the CAE mechanical simulation model is called from the data exchange module through the data conversion interface.
5. The CAE and VR model building system of claim 1 wherein the reconstruction method of the mesh reduction system includes the steps of:
a. the grid simplifying system calls a BIM building information model through a real-time data transmission module;
b. filtering by a model filtering module to obtain a building main structure model;
c. the acquisition component geometric data module automatically acquires a component in the main body structure to acquire three-dimensional geometric parameters of the component;
d. the component material parameter acquisition module is used for automatically acquiring the material parameters of the components in the main body structure;
e. reconstructing the original grid of the BIM building three-dimensional geometric model through a grid reconstruction module;
f. and the grid simplifying system leads the model obtained by the processing in the steps into CAE through a real-time data transmission module for mechanical simulation.
6. The CAE and VR model building system of claim 1 wherein the CAE mechanics model building method includes the steps of:
1) reconstructing a BIM building three-dimensional geometric model through a grid simplification system, and importing the simplified BIM three-dimensional model into a CAE mechanical simulation system;
2) extracting data information in a BIM information model system, judging the attribute of the change information, transmitting data influencing the mechanical simulation to a CAE mechanical simulation system, and driving the CAE mechanical simulation system to update;
3) and feeding back the mechanical information obtained by the updated CAE mechanical simulation model to the BIM information model, and displaying the calculated mechanical information from the BIM information model.
7. The method for building and managing a model building system for CAE and VR as claimed in claim 1, comprising the steps of:
s1, modeling by designers in a computer, then performing mechanical simulation, and after the computation is completed, sending the models to a data exchange module for storage by the designers, wherein the models comprise parameters corresponding to the models and visual data corresponding to the models;
s2, calling visual data corresponding to the model from the data exchange module through VR interactive display equipment by a customer, presenting the stress condition of the whole model to a designer in a virtual reality mode, seeing the change of the model after stress personally, finding the maximum stress and strain point of the whole model, and optimizing the existing structure in real time.
S3, the designer optimizes the most stressed position in the model editing module, transmits the parameters to be modified to the data exchange module through VR interactive equipment, then the parameters are fed back to the CAE by the data exchange module, meanwhile, the model parameters in the CAE are correspondingly changed, then the mechanical simulation is carried out, and finally, the newly obtained model and the visual parameters are displayed through VR interactive display equipment for the designer to refer to.
8. The method of managing the construction of a model construction system for CAE and VR as set forth in claim 7, wherein: and repeating S2-S3 if the stress condition of the modified CAE mechanical model does not meet the engineering requirement until the design requirement is met to complete the final construction of the CAE mechanical model.
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| CN108563827A (en) * | 2018-03-07 | 2018-09-21 | 武汉大学 | A kind of three-dimensional building model comprehensive display and analysis system and its analysis method |
| CN111159797B (en) * | 2019-12-06 | 2023-03-31 | 上海建工集团股份有限公司 | BIM-based general modeling method for mechanical model |
| CN113721475A (en) * | 2020-05-26 | 2021-11-30 | 广州汽车集团股份有限公司 | Data exchange method, data exchange control device and data exchange system |
| CN112230893A (en) * | 2020-10-16 | 2021-01-15 | 北京中船信息科技有限公司 | Ship manufacturing-oriented multi-industrial mechanism model one-stop construction system and method |
| CN114633850B (en) * | 2022-03-10 | 2023-03-24 | 上海交通大学 | Virtual visual reconstruction method for finite element model of ship structure |
| CN114655382B (en) * | 2022-04-13 | 2023-02-24 | 上海交通大学 | Virtual visualization system and method for ship structure dynamics analysis result |
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