CN101089859A - Finite element analysing system for virtual manufacturing welding structure under environment - Google Patents
Finite element analysing system for virtual manufacturing welding structure under environment Download PDFInfo
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Abstract
A finite element analysis system of welded structure under virtual manufacture environment comprises auxiliary analysis module before welding, finite element analysis module and post-treatment module. It is featured as enabling to present 3-D welding preassembling-process and realizing to develop welding connector model-bank in finite element front-treatment module for making welding-process links be fused into development of virtual product excellently.
Description
Technical field
The invention belongs to virtual welding and make the field, be specifically related to finite element analysing system based on stress and temperature computation in the welding process of virtual manufacturing.
Background technology
Virtual Manufacture is an emerging advanced manufacturing technology, it is to be support with emulation technology, infotech and virtual reality technology, production runes such as design, manufacturing are carried out modeling, carry out " manufacturing " of product on computers, thereby function, usability and the manufacturability of check product.
It is center VM that Virtual Manufacture (VM) can be divided into production, to be controlled to be center VM and to be designed to center VM.Be that the production plan that the dummy manufacturing system at center is mainly used in factory is formulated and the workshop layout simulation with production; Concentrate on the optimization and the controlling models of production run with the VM systematic study that is controlled to be the center; With the VM that is designed to the center can be that the product design personnel provide product information in the design phase, optimizes product and technological design.Core concept with the virtual manufacturing that is designed to the center is that manufacturing information is incorporated into design process, utilize emulation to optimize product design, thereby in the design phase, just can carry out manufacturability analysis to designed part even complete machine, this comprises the kinematics analysis of thermodynamic analysis, moving component of the processes such as industrial analysis, casting and welding of process and dynamic analysis etc., even comprises process time, processing charges, analysis of Machining etc.It mainly is the problem that solves " what product that designs is ".
Virtual Manufacture belongs to the ground zero stage at home, at present most ofly concentrates on the machine tooling product with the VM research that is designed to the center, as problems such as the blank cutting of critical component, cutter interferences.Department of Automation of Tsing-Hua University has carried out the product development based on the arrow shaft loom of Virtual Manufacture, at first finishes camshaft and all wefting insertion, the moulding of part in the beating-up mechanism by 3D sculpting software CAD, generates the part three-dimensional entity model; Read in these part solid models by machinery system dynamics automatic analysis system (ADAMS), utilize ADAMS many-body dynamics copying, define corresponding constraint of kinematic pair and drive constraint, set up virtual prototype, resolve system kinematics and kinetics equation by the ADAMS kernel again, matching relationship to handing-over latitude mechanism carries out design of Simulation, obtain the kinematics and the dynamics of rapier loom weft insertion and beating-up mechanism, emulation output and design object compare, and return CAD and adjust the associated components structural parameters.Nanjing University of Technology adopts Virtual Manufacture to research and develop VE type proportioning pump, this mechanism at first carries out the virtual design of product, carry out kinematics analysis, the dynamic analysis of motion thereafter, the result who obtains is input to finite element analysis and structure optimization, carry out the virtual assembling of product then, and carried out the virtual machine tooling analysis of key component; 200610081500.8 propositions of China national patent of invention are at the planning of assembly technology in the virtual manufacturing field, and this planing method is the semi-immersion assembling planning towards the scene; Dalian Polytechnic College adopts the research and development that the technology of virtual manufacturing are applied to index cam, mainly studied the blank preparation module, machining tool configuration module, material removal emulation module of NC code translation module, part etc. in the link of virtual manufacture.
And in the actual production process, a lot of parts need welding fabrication, and welding processing also is an important step in the product processing, and data show that the ferrous materials more than 40% needs welding fabrication.The physical dimension of weld seam, mechanical property etc. are the important indicators of product quality evaluation.Along with improving constantly of solder technology, the Automation of Welding degree is also more and more higher, and this has also proposed new requirement for the simulation that realizes welding process on computers, so under virtual manufacturing environment welding process analysis is necessary.
Summary of the invention
The invention provides a kind of finite element analysing system of virtual manufacturing welding structure under environment.The objective of the invention is the finite element analysis of welding process is integrated in the virtual manufacturing environment, support product, needs are carried out the product of welding processing and realize the virtual design process from being machined to the design of welding fabrication overall process.
The present invention is integrated into the welding process finite element method in the virtual manufacturing environment; It is divided into the preceding assistant analysis module of weldering, finite element analysis module, rearmounted processing module three parts;
Assistant analysis module before the weldering: carry out geometric modeling by computer aided design software, geometric modeling is converted into the model file of Virtual Reality Modeling Language by the format conversion device, formulate the pre-assembled path by Virtual Reality Modeling Language, realize virtual pre-assembled;
Finite element analysis module: the result passes to finite element analysis software with pre-assembled, simultaneously, utilize the expansion module exploitation welding joint model bank of finite element analysis software, the welding joint model bank is embedded in the finite element analysis software, utilize finite element analysis software in conjunction with assembling result, welding joint storehouse, the temperature and the stress field of welding are found the solution calculating;
Rearmounted processing module: utilize the distortion situation of stress field, temperature field and weldment that the finite element analysis software analysis obtains to carry out the welding quality evaluation, check product assembling capacity, to optimize the result and feed back to computer aided design software, according to the moulding of analysis result Modified geometrical, improve welding sequence, revise welding condition.
The present invention can be implemented in the virtual environment the pre-assembled of welding assembly, presents the pre-assembling process of three-dimensional welding realistically, solves the dull problem of traditional Preceding Dispose of FEA procedural abstraction;
Can be implemented in the welding knowledge base the extraction of welding joint model, present simple joint choice menus form, it is strongly professional to solve traditional finite element software, and plant personnel is difficult to the deficiency grasped fast;
Can be in conjunction with the actual welding situation, for finite element analysis model loads various constraint conditions, make welding analyze the mapping that in computing machine, obtains physical message, derive the result of finite element data, according to user's request, watch weldment distortion situation, watch weldment temperature field and change of stress field situation in welding process;
Can realize the finite element analysis pre-process, rearmounted handle analyze with down other of virtual manufacturing environment as: kinematics, dynamics, assembling analysis integrated, make the welding processing link well be fused in the VPD, instruct actual production, realize the application of welding analysis in virtual manufacturing environment.
Embodiment
Embodiment one: the following present embodiment that specifies, present embodiment is integrated into the welding process finite element method in the virtual manufacturing environment; It is divided into the preceding assistant analysis module of weldering, finite element analysis module, rearmounted processing module three parts;
Assistant analysis module before the weldering: carry out geometric modeling by computer aided design software, geometric modeling is converted into the model file of Virtual Reality Modeling Language by the format conversion device, formulate the pre-assembled path by Virtual Reality Modeling Language, realize virtual pre-assembled;
Finite element analysis module: the result passes to finite element analysis software with pre-assembled, simultaneously, utilize the expansion module exploitation welding joint model bank of finite element analysis software, the welding joint model bank is embedded in the finite element analysis software, utilize finite element analysis software in conjunction with assembling result, welding joint storehouse, the temperature and the stress field of welding are found the solution analysis;
Rearmounted processing module: utilize the distortion situation of stress field, temperature field and weldment that the finite element analysis software analysis obtains to carry out the welding quality evaluation, check product assembling capacity, to optimize the result and feed back to computer aided design software, according to the moulding of analysis result Modified geometrical, improve welding sequence, revise welding condition.
Embodiment two: the following present embodiment that specifies, present embodiment is carried out the close friendization processing to the finite element software interface, generates the customization graphical interfaces towards welding joint.
Embodiment three: the following present embodiment that specifies, present embodiment is carried out dynamics, kinematics analysis to the position in the welded structure in the product geometric modeling, and to welding back distortion carrying out assembling capacity analysis.
Embodiment four: the following present embodiment that specifies, present embodiment is according to the parts of actual product, the geometric modeling of deisgn product in 3D sculpting software, geometry designs comprises the shape of each parts, the position of weld seam, the size of weld seam etc., design after the geometric configuration, by the format conversion device, export as * .wrl file, this document is the model file of virtual reality language modeling, in reality environment, adopt Virtual Reality Modeling Language VRML to add node for each parts, sensor, interpolator etc., formulate the pre-assembled path,, present the preceding pre-assembled of weldering by user's operation, and realize and the communicating by letter of finite element analysis by the JavaScript script, will assemble the result and pass to the finite element analysis processor.
Utilize the expansion module Py_Mentat exploitation welding joint model bank of software MARC, and this program is integrated in the MARC software, from this model bank, can directly derive dissimilar joint models, this feature database adopts Python to develop, with mode and the MARC software communication that embeds, can observe user-selected joint form by convenience of window interface like this, in addition, according to parameter required in the joint characteristics storehouse, carry out the friendly interface processing of welding joint feature, generate new customization graphical interfaces, make the user on customization menu newly developed, directly generate new assignment file and submission by parts such as buttons, call the joint model then, submit to the computing of MARC solver, MFL is a MARC menu language file.All menu files are kept under the menus catalogue among the Mentat, and menus at different levels occur with * .ms form, and this document is a binary file, can make amendment by text edit software.
Utilize software MARC to carry out the analysis of Welding Problems.At first determine the type of analysis, determine the material properties of weld seam, selected cell type in Preceding Dispose of FEA device program, and self-adaptation is divided grid, set up computation model, the model in the welding sequence in the input virtual environment, the input welding joint storehouse is found the solution computation model.Adopt board or other softwares for editing to program, set up welding joint storehouse pattern manipulation interface.
Welded structure need be carried out dynamics, kinematics analysis to it during as the structural member of product.With the geometric model in the 3D sculpting software by the IGES/STEP form or utilize interface routine to send NASTRAN software to, in this software, set up analytical model and kinematic relation, obtain the relation between speed, acceleration, the displacement, adopt ADAMS to carry out dynamics simulation, in the SOLVER module, find the solution the kinematic relation that obtains between each parts, design performance to product is analyzed, for finite element software provides boundary condition and load.According to result of calculation, carry out the analysis of welding quality, and the assembling of the welding moulding after in virtual environment, being out of shape, the assembling capacity of testing product proposes innovative approach and is optimized design, at last the structure of optimizing is fed back to computer aided design system, the Modified geometrical moulding, improve welding sequence, revise the technology welding parameter, thereby improve welding quality.
Claims (3)
1, the finite element analysing system of virtual manufacturing welding structure under environment is characterized in that it is integrated into the welding process finite element method in the virtual manufacturing environment; It is divided into the preceding assistant analysis module of weldering, finite element analysis module, rearmounted processing module three parts;
Assistant analysis module before the weldering: carry out geometric modeling by computer aided design software, geometric modeling is converted into the model file of Virtual Reality Modeling Language by the format conversion device, formulate the pre-assembled path by Virtual Reality Modeling Language, realize virtual pre-assembled;
Finite element analysis module: the result passes to finite element analysis software with pre-assembled, simultaneously, utilize the expansion module exploitation welding joint model bank of finite element analysis software, the welding joint model bank is embedded in the finite element analysis software, utilize finite element analysis software in conjunction with assembling result, welding joint storehouse, the temperature and the stress field of welding are found the solution calculating;
Rearmounted processing module: utilize the distortion situation of stress field, temperature field and weldment that the finite element analysis software analysis obtains to carry out the welding quality evaluation, check product assembling capacity, to optimize the result and feed back to computer aided design software, according to the moulding of analysis result Modified geometrical, improve welding sequence, revise welding condition.
2, the finite element analysing system of virtual manufacturing welding structure under environment according to claim 1 is characterized in that the close friendization processing is carried out at the finite element software interface, generates the customization graphical interfaces towards welding joint.
3, the finite element analysing system of virtual manufacturing welding structure under environment according to claim 1, it is characterized in that dynamics, kinematics analysis are carried out in the position in the welded structure in the product geometric modeling, and to welding back distortion carrying out assembling capacity analysis.
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751500A (en) * | 2008-12-09 | 2010-06-23 | 利弗莫尔软件技术公司 | Improved entity finite element suitable for large deformation and/or rotation of imitated structure |
| CN102354161A (en) * | 2011-06-22 | 2012-02-15 | 上海电机学院 | Finite element compensation method for deformation of numerical control processed part |
| CN103020330A (en) * | 2011-09-27 | 2013-04-03 | 上海空间推进研究所 | Pressure distribution method of pressure welding |
| CN104063530A (en) * | 2013-11-29 | 2014-09-24 | 河海大学常州校区 | Prediction method based on ABAQUS for residual hydrogen of welded joint |
| CN104408253A (en) * | 2014-11-26 | 2015-03-11 | 沈阳华创风能有限公司 | Calculating method for fatigue life checking of fan welding parts |
| CN103020330B (en) * | 2011-09-27 | 2016-11-30 | 上海空间推进研究所 | pressure welding pressure distribution method |
| CN106205291A (en) * | 2010-05-27 | 2016-12-07 | 林肯环球股份有限公司 | The virtual test of virtual weldment and inspection |
| CN106504629A (en) * | 2016-11-04 | 2017-03-15 | 大连文森特软件科技有限公司 | A kind of automobile demonstration memory system based on augmented reality |
| CN106530410A (en) * | 2016-11-04 | 2017-03-22 | 大连文森特软件科技有限公司 | Automobile assembly demonstration system based on augmented reality technology |
| CN106530403A (en) * | 2016-11-04 | 2017-03-22 | 大连文森特软件科技有限公司 | Automobile component quality inspection system based on augmented reality technology |
| CN108563835A (en) * | 2018-03-21 | 2018-09-21 | 北京科技大学 | A kind of material forming virtual emulation platform construction method |
| CN109086549A (en) * | 2018-08-27 | 2018-12-25 | 中车齐齐哈尔车辆有限公司 | A kind of welding structure analogue system and emulation mode |
| CN109128475A (en) * | 2018-11-06 | 2019-01-04 | 宁波瑞曼特新材料有限公司 | A kind of welding structure and welding method of water cooling system |
| CN109145459A (en) * | 2018-08-27 | 2019-01-04 | 中车齐齐哈尔车辆有限公司 | A kind of weld seam unit generation method and device |
| CN109299568A (en) * | 2018-10-24 | 2019-02-01 | 南京航空航天大学 | Welding point constitutive model Backstipping design based on nano indentation test |
| CN109317772A (en) * | 2018-11-20 | 2019-02-12 | 武汉理工大学 | A kind of Experimental Characterization and numerical simulation combine the method for probing into laser brazing process parameter |
| CN110264833A (en) * | 2013-03-11 | 2019-09-20 | 林肯环球股份有限公司 | The system and method for user's experience of enhancing are provided in the virtual reality welding surroundings of real-time simulation |
| CN112270057A (en) * | 2020-11-13 | 2021-01-26 | 内蒙古第一机械集团股份有限公司 | Large complex structural member assembling method |
| CN112338379A (en) * | 2019-08-08 | 2021-02-09 | 南京理工大学 | High-efficient accurate welding system of complicated special-shaped sheet metal box structure robot |
| CN114799638A (en) * | 2022-05-16 | 2022-07-29 | 广州东焊智能装备有限公司 | Human-computer cooperation welding system based on virtual reality |
| CN115169274A (en) * | 2022-06-20 | 2022-10-11 | 浙江大学 | Method and device for generating geometric adaptive numerical simulation grid of electronic device assembly |
| CN116197534A (en) * | 2023-05-06 | 2023-06-02 | 赫比(成都)精密塑胶制品有限公司 | Laser welding method and laser welding processing technology |
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- 2007-07-20 CN CN 200710072529 patent/CN101089859A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751500B (en) * | 2008-12-09 | 2013-02-13 | 利弗莫尔软件技术公司 | Improved entity finite element suitable for large deformation and/or rotation of imitated structure |
| CN101751500A (en) * | 2008-12-09 | 2010-06-23 | 利弗莫尔软件技术公司 | Improved entity finite element suitable for large deformation and/or rotation of imitated structure |
| CN106205291A (en) * | 2010-05-27 | 2016-12-07 | 林肯环球股份有限公司 | The virtual test of virtual weldment and inspection |
| CN106205291B (en) * | 2010-05-27 | 2019-05-28 | 林肯环球股份有限公司 | The virtual test of virtual weldment and inspection |
| CN102354161A (en) * | 2011-06-22 | 2012-02-15 | 上海电机学院 | Finite element compensation method for deformation of numerical control processed part |
| CN103020330A (en) * | 2011-09-27 | 2013-04-03 | 上海空间推进研究所 | Pressure distribution method of pressure welding |
| CN103020330B (en) * | 2011-09-27 | 2016-11-30 | 上海空间推进研究所 | pressure welding pressure distribution method |
| CN110264833A (en) * | 2013-03-11 | 2019-09-20 | 林肯环球股份有限公司 | The system and method for user's experience of enhancing are provided in the virtual reality welding surroundings of real-time simulation |
| CN104063530A (en) * | 2013-11-29 | 2014-09-24 | 河海大学常州校区 | Prediction method based on ABAQUS for residual hydrogen of welded joint |
| CN104408253A (en) * | 2014-11-26 | 2015-03-11 | 沈阳华创风能有限公司 | Calculating method for fatigue life checking of fan welding parts |
| CN106504629A (en) * | 2016-11-04 | 2017-03-15 | 大连文森特软件科技有限公司 | A kind of automobile demonstration memory system based on augmented reality |
| CN106530403A (en) * | 2016-11-04 | 2017-03-22 | 大连文森特软件科技有限公司 | Automobile component quality inspection system based on augmented reality technology |
| CN106530410A (en) * | 2016-11-04 | 2017-03-22 | 大连文森特软件科技有限公司 | Automobile assembly demonstration system based on augmented reality technology |
| CN106530410B (en) * | 2016-11-04 | 2019-03-12 | 快创科技（大连）有限公司 | A kind of automobile demo system based on augmented reality |
| CN106530403B (en) * | 2016-11-04 | 2019-04-05 | 快创科技（大连）有限公司 | A kind of auto parts and components quality inspection system based on augmented reality |
| CN108563835A (en) * | 2018-03-21 | 2018-09-21 | 北京科技大学 | A kind of material forming virtual emulation platform construction method |
| CN108563835B (en) * | 2018-03-21 | 2023-09-15 | 北京科技大学 | Material forming virtual simulation platform construction method |
| CN109145459A (en) * | 2018-08-27 | 2019-01-04 | 中车齐齐哈尔车辆有限公司 | A kind of weld seam unit generation method and device |
| CN109086549A (en) * | 2018-08-27 | 2018-12-25 | 中车齐齐哈尔车辆有限公司 | A kind of welding structure analogue system and emulation mode |
| CN109299568A (en) * | 2018-10-24 | 2019-02-01 | 南京航空航天大学 | Welding point constitutive model Backstipping design based on nano indentation test |
| CN109299568B (en) * | 2018-10-24 | 2021-07-23 | 南京航空航天大学 | Welding joint constitutive model back-stepping method based on nano indentation test |
| CN109128475A (en) * | 2018-11-06 | 2019-01-04 | 宁波瑞曼特新材料有限公司 | A kind of welding structure and welding method of water cooling system |
| CN109317772A (en) * | 2018-11-20 | 2019-02-12 | 武汉理工大学 | A kind of Experimental Characterization and numerical simulation combine the method for probing into laser brazing process parameter |
| CN112338379A (en) * | 2019-08-08 | 2021-02-09 | 南京理工大学 | High-efficient accurate welding system of complicated special-shaped sheet metal box structure robot |
| CN112270057A (en) * | 2020-11-13 | 2021-01-26 | 内蒙古第一机械集团股份有限公司 | Large complex structural member assembling method |
| CN114799638A (en) * | 2022-05-16 | 2022-07-29 | 广州东焊智能装备有限公司 | Human-computer cooperation welding system based on virtual reality |
| CN115169274A (en) * | 2022-06-20 | 2022-10-11 | 浙江大学 | Method and device for generating geometric adaptive numerical simulation grid of electronic device assembly |
| CN115169274B (en) * | 2022-06-20 | 2023-05-02 | 浙江大学 | Method and device for generating geometric self-adaptive numerical simulation grid of electronic device assembly |
| CN116197534A (en) * | 2023-05-06 | 2023-06-02 | 赫比(成都)精密塑胶制品有限公司 | Laser welding method and laser welding processing technology |
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