CN107066676A - A kind of finite element automation modeling method based on satellite plate and shell structure - Google Patents
A kind of finite element automation modeling method based on satellite plate and shell structure Download PDFInfo
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- CN107066676A CN107066676A CN201710036935.9A CN201710036935A CN107066676A CN 107066676 A CN107066676 A CN 107066676A CN 201710036935 A CN201710036935 A CN 201710036935A CN 107066676 A CN107066676 A CN 107066676A
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- 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
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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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
Abstract
The present invention is a kind of finite element automation modeling method based on satellite plate and shell structure, the characteristics of for satellite plate and shell structure, main flow finite element modeling software MSC.Patran using domestic space industry develops finite element automatic modeling system as platform using PCL Programming with Pascal Language.This method includes step：(1) model is imported；(2) model editing；(3) mesh generation；(4) material/cell attribute is set；(5) load/border/primary condition is set；(6) analysis is submitted to calculate.The present invention can improve the Knowledge Aggregation of product structure design, and modular product structural analysis/Optimizing Flow shortens the model lead time, reduces Project R＆D cost.
Description
Technical field
The present invention relates to a kind of finite element automation modeling method, particularly a kind of finite element based on satellite plate and shell structure
Automation modeling method, belongs to field of aerospace technology.
Background technology
The widely used finite element analysis technology of design of spacecraft, carries out Structural Static, the analysis of dynamics.Spacecraft
Finite element analysis process is totally divided into three steps：Pre-treatment, FEM calculation, post processing.Current FEM calculation and post processing skill
Art development is preferable, and is divided into that principal character finite element modeling technology is very weak automatically with finite element grid, and complete is limited
During meta analysis, the consuming of modeling accounts for for 50% time, and for analysis personnel, finite element modeling not only needs to have many
The knowledge of subject, and need to have to actual items progress analysis knowledge and experience.What development was designed a model based on CAD 3D
Finite element Auto-Modelling Technology, can just give full play to application of the finite element analysis technology in Spacecraft guidance and control.Specifically with
The advantage that finite element automatic modeling is carried out based on being designed a model based on CAD 3D is as follows：
1) completed Design of spacecraft structure information can be made full use of, the efficiency of finite element modeling is improved
2) realize the spacecraft structure modeling based on uniform data source and analyze
3) mutual supplement with each other's advantages of CAD/CAE integral fusions and modules is realized
4) avoid the finite element modeling of repeatability, shorten the spacecraft R＆D cycle
The content of the invention
The technical problems to be solved by the invention are, for during overcoming finite element analysis, modeling efficiency is low, modeling procedure
Lack of standardization, Knowledge Aggregation and the low defect of automatization level, there is provided a kind of finite element fraction the characteristics of for satellite plate and shell structure
Analyse the automation modeling method of pre-treatment work.
The technical solution adopted by the present invention is：A kind of finite element automation modeling method based on satellite plate and shell structure, bag
Include following steps：
(1) model is imported；
Automatic modeling system is the Three Dimensional Design Model for having handled well, and user initially sets up model map information text
Part is simultaneously placed it among operating path；Start Patran softwares afterwards, specify the operating path set, file name；
Recently enter position and the title of the Three Dimensional Design Model to be analyzed.System can be automatically performed model after submitting these information
Import work.
Described automatic modeling system is the characteristics of being directed to satellite plate and shell structure, with the main flow finite element of domestic space industry
Modeling software MSC.Patran is platform, the finite element developed using PCL (Patran Command Language) Programming with Pascal Language
Automatic modeling program, the system has been integrated among MSC.Patran softwares.
Described Three Dimensional Design Model refers to using 3 d modeling software institutes such as CATIA, UG, Pro/E, Sol idWorks
Designed three-dimensional CAD mathematical model.
Described model map information file refers to the text that user provides according to the product to be analyzed, should
File contains the phase between information and these information such as product each part name, material type, thickness, non-structural mass
Mutual mapping relations.
(2) model editing；
Because it is all plate and shell structure that satellite structure is most of, need to be converted into 2D models for 3D models.Model is compiled
Collect face and model quality inspection in including extracting.
Face refers on the basis of 3D models in described extraction, by the middle face of the automatic extraction model of program, eliminates model
Thickness, and then generate the 2D models for remaining original connection/assembly information.Model quality inspection is entered for the 2D models of generation
Row, which is checked, to be confirmed, repairs the geometrical defect existed.
(3) mesh generation；
On the basis of 2D models, trellis-type and sizing grid control parameter are set first, system can be certainly after submission
It is dynamic to complete 2D mesh generations.
(4) material/cell attribute is set
According to the material type information in model map information file, program is automatically performed corresponding material model and set up；
The mutual map information of thickness afterwards in file, non-structural mass and part name, program can voluntarily complete unit
Attribute setting and the imparting work of cell attribute.
Described material model is set up, refer to program called according to the material type of offer before development system when institute in advance
Material model in the common used material model library set, these material models have preassigned corresponding material parameter value,
User only needs slightly to change as needed.
Described cell attribute is set, and refers to set up corresponding cell type title, specifies corresponding material model, is set
Element thickness, specifies non-structural mass etc. is a series of to manipulate.
Described cell attribute is assigned, and refers to that the cell type that will be set is assigned to corresponding part according to map information
Model.
(5) load/border/primary condition is set.
This part work different situations are had according to the type difference of problem analysis, such as, and statics Analysis need into
Row load is set；Collision problem analysis needs to set into row bound/primary condition；Free Modal Analysis avoids the need for being carried
Lotus/border/primary condition is set.
(6) analysis is submitted to calculate
After the pre-treatment work of completion finite element modeling, it is possible to call corresponding Nastran to solve according to analysis type
Device carries out analysis calculating.
Described step (1) to step (6) can user supervision under, by program it is one-touch be automatically performed；Also may be used
Progressively to be carried out in the way of man-machine interaction under the prompting of system, at this moment user only needs to complete that some are simple according to prompting
Information is inputted and confirmed, other numerous and diverse work will transfer to program to be automatically performed.
The present invention is a kind of finite element automation modeling method, solves during finite element analysis, modeling efficiency is low, builds
The problems such as mould flow is lack of standardization, improves the level of finite element modeling process Knowledge Aggregation and automation, is ground for shortening product
In the hair cycle, product design performance is improved, the energy for reducing repetitive operation liberation people has great importance.
Brief description of the drawings
Fig. 1 is the workflow diagram of the present invention
Fig. 2 is automatic modeling system integration menu
Fig. 3 is plate shell case structure Pro/E models
Fig. 4 is 2D plate and shell structure models
Fig. 5 is grid model
Fig. 6 is that material model is set
Fig. 7 is that cell attribute is set
Fig. 8 is result of calculation output
Embodiment
With reference to embodiment and accompanying drawing to a kind of finite element automation modeling based on satellite plate and shell structure of the invention
Method is described in detail.
As shown in figure 1, the invention provides a kind of finite element automation modeling method based on satellite plate and shell structure, it has
Body comprises the following steps：
(1) model is imported；
User initially sets up model map information file and placed it among operating path；Start Patran afterwards soft
Part, specifies the operating path set, file name；Recently enter position and the name of the Three Dimensional Design Model to be analyzed
Claim.System can be automatically performed model importing work after submitting these information.
Described automatic modeling system is the characteristics of being directed to satellite plate and shell structure, with the main flow finite element of domestic space industry
Modeling software MSC.Patran is platform, the finite element developed using PCL (Patran Command Language) Programming with Pascal Language
Automatic modeling program, the system has been integrated among MSC.Patran softwares, such as the integrated dish for the system that Fig. 2 is shown
It is single.
Described Three Dimensional Design Model refers to using 3 d modeling software institutes such as CATIA, UG, Pro/E, Sol idWorks
Designed three-dimensional CAD mathematical model, establishes a simple plate shell case structure come instead of reality using Pro/E here
Dummy satellite, as shown in Figure 3.
Described model map information file refers to the text that user provides according to the product to be analyzed, should
File contains the phase between information and these information such as product each part name, material type, thickness, non-structural mass
Mutual mapping relations, as shown in Figure 4.
(2) model editing；
Because it is all plate and shell structure that satellite structure is most of, need to be converted into 2D models for 3D models.Model is compiled
Collect face and model quality inspection in including extracting.
Face refers on the basis of 3D models in described extraction, by the middle face of the automatic extraction model of program, eliminates model
Thickness, and then generate the 2D models for remaining original connection/assembly information.Model quality inspection is entered for the 2D models of generation
Row, which is checked, to be confirmed, repairs the geometrical defect existed.What Fig. 4 was represented is that model imports the 2D structures obtained during Patran is extracted behind face
Model.
(3) mesh generation；
On the basis of 2D models, trellis-type and sizing grid control parameter are set first, system can be certainly after submission
It is dynamic to complete 2D mesh generations.Fig. 5 represents to have divided the grid model of grid on the basis of 2D models.
(4) material/cell attribute is set
According to the material type information in model map information file, program is automatically performed corresponding material model and set up；
The mutual map information of thickness afterwards in file, non-structural mass and part name, program can voluntarily complete unit
Attribute setting and the imparting work of cell attribute.
Described material model is set up, refer to program called according to the material type of offer before development system when institute in advance
Material model in the common used material model library set, these material models have preassigned corresponding material parameter value,
User only needs slightly to change as needed.
Described cell attribute is set, and refers to set up corresponding cell type title, specifies corresponding material model, is set
Element thickness, specifies non-structural mass etc. is a series of to manipulate.
Described cell attribute is assigned, and refers to that the cell type that will be set is assigned to corresponding part according to map information
Model.
We, which set up, in this example two kinds of material model：Aluminum and Steel, as shown in Figure 6.According to material
Expect type, plate thickness of the shell and non-structural mass information, 4 kinds of cell attributes are provided with altogether, as shown in Figure 7.
(5) load/border/primary condition is set.
This part work different situations are had according to the type difference of problem analysis, such as, and statics Analysis need into
Row load is set；Collision problem analysis needs to set into row bound/primary condition；Free Modal Analysis avoids the need for being carried
Lotus/border/primary condition is set.The step for need manually be added as needed on, for simplicity this example select free module
State is analyzed, and load/border/primary condition is no longer done here and is set.
(6) analysis is submitted to calculate
After the pre-treatment work of completion finite element modeling, it is possible to call corresponding Nastran to solve according to analysis type
Device carries out analysis calculating.Fig. 8 gives the analysis result of model single order Free Modal.
Claims (2)
1. a kind of finite element automation modeling method based on satellite plate and shell structure, it is characterised in that comprise the following steps：
(1) model is imported；
Automatic modeling system is the Three Dimensional Design Model for having handled well, and user initially sets up model map information file simultaneously
Place it among operating path；Start Patran softwares afterwards, specify the operating path set, file name；Finally
Input position and the title of the Three Dimensional Design Model to be analyzed.System can be automatically performed model importing after submitting these information
Work.
Described automatic modeling system is the characteristics of being directed to satellite plate and shell structure, with the main flow finite element modeling of domestic space industry
Software MSC.Patran is platform, and the finite element developed using PCL (Patran Command Language) Programming with Pascal Language is automatic
Modeling program, the system has been integrated among MSC.Patran softwares.
Described Three Dimensional Design Model refers to using good designed by the 3 d modeling softwares such as CATIA, UG, Pro/E, SolidWorks
Three-dimensional CAD mathematical model.
Described model map information file refers to the text that user provides according to the product to be analyzed, this document
Contain mutually the reflecting between information and these information such as product each part name, material type, thickness, non-structural mass
Penetrate relation.
(2) model editing；
Because it is all plate and shell structure that satellite structure is most of, need to be converted into 2D models for 3D models.Model editing bag
Include face and model quality inspection in extraction.
Face refers on the basis of 3D models in described extraction, by the middle face of the automatic extraction model of program, eliminates phantom thicknesses,
And then generate the 2D models for remaining original connection/assembly information.Model quality inspection is examined for the 2D models of generation
Confirmation is looked into, the geometrical defect existed is repaired.
(3) mesh generation；
On the basis of 2D models, trellis-type and sizing grid control parameter are set first, system can be automatic complete after submission
Into 2D mesh generations.
(4) material/cell attribute is set
According to the material type information in model map information file, program is automatically performed corresponding material model and set up；Afterwards
The mutual map information of thickness, non-structural mass and part name in file, program can voluntarily complete cell attribute
Setting and the imparting work of cell attribute.
Described material model is set up, refer to program called according to the material type of offer before development system when preset
Material model in good common used material model library, these material models have preassigned corresponding material parameter value, user
Only need slightly to change as needed.
Described cell attribute is set, and refers to set up corresponding cell type title, specifies corresponding material model, setting unit
Thickness, specifies non-structural mass etc. is a series of to manipulate.
Described cell attribute is assigned, and refers to that the cell type that will be set is assigned to corresponding part mould according to map information
Type.
(5) load/border/primary condition is set.
The work of this part has different situations according to the type difference of problem analysis, such as, statics Analysis needs to be carried
Lotus is set；Collision problem analysis needs to set into row bound/primary condition；Free Modal Analysis avoids the need for carrying out load/side
Boundary/primary condition is set.
(6) analysis is submitted to calculate
After the pre-treatment work of completion finite element modeling, it is possible to call corresponding Nastran solvers to enter according to analysis type
Row analysis is calculated.
2. a kind of finite element automation modeling method based on satellite plate and shell structure according to claim 1, its feature exists
In, step (1) to step (6) can under user's supervision, by program it is one-touch be automatically performed；Can also carrying in system
Progressively carried out in the way of man-machine interaction under showing, at this moment user only needs to complete some simple information inputs and true according to prompting
Recognize, other numerous and diverse work will transfer to program to be automatically performed.
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Cited By (12)
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| CN108334654A (en) * | 2017-10-20 | 2018-07-27 | 北京空天技术研究所 | A kind of Static Analysis Model of Micro-machined construction method and system based on geometrical model |
| CN108536432A (en) * | 2018-04-09 | 2018-09-14 | 重庆塞尔特科技有限公司 | A kind of modular research and development of products flow control method |
| CN108614923A (en) * | 2018-04-09 | 2018-10-02 | 重庆塞尔特科技有限公司 | A method of controlling finite element modeling and analysis with table |
| CN109165397A (en) * | 2018-06-29 | 2019-01-08 | 华南理工大学 | Automatic CAE analysis system and development approach based on UG and ANSA platform |
| CN109885971A (en) * | 2019-03-20 | 2019-06-14 | 北京空间飞行器总体设计部 | Design of satellite construction method based on three-dimensional lattice material |
| CN110059330A (en) * | 2017-12-13 | 2019-07-26 | 达索系统西姆利亚公司 | For creating the method and system of simulated scenario |
| CN110609820A (en) * | 2018-05-28 | 2019-12-24 | 吴俊逸 | Modeling system based on character mining and modeling method using same |
| CN110851121A (en) * | 2019-10-30 | 2020-02-28 | 中国航空工业集团公司西安飞行自动控制研究所 | Gridding flight management system man-machine interaction design and realization method |
| CN111914439A (en) * | 2019-06-04 | 2020-11-10 | 中车大同电力机车有限公司 | Modeling method and device of finite element model, storage medium and electronic equipment |
| CN112214810A (en) * | 2020-09-14 | 2021-01-12 | 珠海格力电器股份有限公司 | Method and system for simulating strength of packaged product, computer equipment and storage medium |
| CN112270116A (en) * | 2020-09-25 | 2021-01-26 | 珠海格力电器股份有限公司 | Product packaging and transporting statics analysis method, platform, storage medium and application |
| CN112597680A (en) * | 2020-12-21 | 2021-04-02 | 北京慧物科联科技有限公司 | Automatic finite element modeling method applied to sanitary ware |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108334654B (en) * | 2017-10-20 | 2019-01-18 | 北京空天技术研究所 | A kind of Static Analysis Model of Micro-machined construction method and system based on geometrical model |
| CN108334654A (en) * | 2017-10-20 | 2018-07-27 | 北京空天技术研究所 | A kind of Static Analysis Model of Micro-machined construction method and system based on geometrical model |
| CN110059330A (en) * | 2017-12-13 | 2019-07-26 | 达索系统西姆利亚公司 | For creating the method and system of simulated scenario |
| CN110059330B (en) * | 2017-12-13 | 2023-08-18 | 达索系统西姆利亚公司 | Method and system for authoring simulated scenes |
| CN108536432A (en) * | 2018-04-09 | 2018-09-14 | 重庆塞尔特科技有限公司 | A kind of modular research and development of products flow control method |
| CN108614923A (en) * | 2018-04-09 | 2018-10-02 | 重庆塞尔特科技有限公司 | A method of controlling finite element modeling and analysis with table |
| CN110609820A (en) * | 2018-05-28 | 2019-12-24 | 吴俊逸 | Modeling system based on character mining and modeling method using same |
| CN109165397A (en) * | 2018-06-29 | 2019-01-08 | 华南理工大学 | Automatic CAE analysis system and development approach based on UG and ANSA platform |
| CN109165397B (en) * | 2018-06-29 | 2023-05-26 | 华南理工大学 | Automatic CAE analysis system and development method based on UG and ANSA platforms |
| CN109885971B (en) * | 2019-03-20 | 2022-02-11 | 北京空间飞行器总体设计部 | Satellite structure design method based on three-dimensional lattice material |
| CN109885971A (en) * | 2019-03-20 | 2019-06-14 | 北京空间飞行器总体设计部 | Design of satellite construction method based on three-dimensional lattice material |
| CN111914439A (en) * | 2019-06-04 | 2020-11-10 | 中车大同电力机车有限公司 | Modeling method and device of finite element model, storage medium and electronic equipment |
| CN110851121A (en) * | 2019-10-30 | 2020-02-28 | 中国航空工业集团公司西安飞行自动控制研究所 | Gridding flight management system man-machine interaction design and realization method |
| CN110851121B (en) * | 2019-10-30 | 2023-05-23 | 中国航空工业集团公司西安飞行自动控制研究所 | Man-machine interaction design and implementation method of gridding flight management system |
| CN112214810A (en) * | 2020-09-14 | 2021-01-12 | 珠海格力电器股份有限公司 | Method and system for simulating strength of packaged product, computer equipment and storage medium |
| CN112270116A (en) * | 2020-09-25 | 2021-01-26 | 珠海格力电器股份有限公司 | Product packaging and transporting statics analysis method, platform, storage medium and application |
| CN112597680A (en) * | 2020-12-21 | 2021-04-02 | 北京慧物科联科技有限公司 | Automatic finite element modeling method applied to sanitary ware |
| CN112597680B (en) * | 2020-12-21 | 2023-11-24 | 北京慧物科联科技有限公司 | Automatic finite element modeling method applied to bathroom sanitary ware |
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