CN106326604A - Cloud manufacturing platform-based finite element analysis service method - Google Patents
Cloud manufacturing platform-based finite element analysis service method Download PDFInfo
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- CN106326604A CN106326604A CN201610864086.1A CN201610864086A CN106326604A CN 106326604 A CN106326604 A CN 106326604A CN 201610864086 A CN201610864086 A CN 201610864086A CN 106326604 A CN106326604 A CN 106326604A
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- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
Abstract
A cloud manufacturing platform-based finite element analysis service method comprises the steps of 1, constructing a cloud manufacturing platform-based parametrical model database and a parametric design service library, wherein the model database provides a basis for product design, and the design service library provides a calculation engine for product design; 2, constructing a cloud manufacturing platform-based finite element analysis service library, wherein the main steps and key links of the finite element analysis are encapsulated as Web service, and deployed on the cloud platform for analysis and call; 3, constructing cloud manufacturing platform-based finite element analysis results display service, and thus providing diversified finite element analysis results for a user.
Description
Technical field
The present invention relates to cloud manufacture and finite element analysis technology field, particularly give based on cloud manufacturing platform limited
Meta-analysis method of servicing.
Background technology
Finite element analysis is used to solve the most powerful instrument of engineering problem, but finite element analysis software price is held high
Expensive, and technical merit is required higher, general medium-sized and small enterprises do not have enough funds and technical capability independently to use
Finite element analysis technology.
Along with the fast development of the Internet, researchers develop remote finite element and analyze system, pass through internet use
Remote finite element analyzes software, soft at the description of finite element analysis and management, computing service agent, communication mechanism, background service
The aspects such as part specification and visualization are studied.Wuan ripple (Journal of System Simulation, 2002) proposes remotely having of sing on web
Limit unit service of simulation framework R-FEAS；Once climbed (China Mechanical Engineering, 2004) and have studied the finite element analysis parameter of sing on web
The technology such as change, templating, it is achieved that provide the user remote finite element Analysis Service by Web；Zhou Danchen (China mechanic
Journey, 2004) technical scheme of the Finite Element Analysis Tele-service System of sing on web is proposed, it is achieved that mistake based on multi-Agent
The key technologies such as the management of journey planning and optimization and FEA service centre；Li Yefei (computer integrated manufacturing system, 2003) proposes
Finite element remote analysis resource framework of based on Internet, it is achieved that remote finite element analyzes process, finite element server
Structure, the distribution of finite element resource manages and commercialization finite element analysis software integrated with analysis task.
Deeply developing along with the Internet+in manufacture field and extensively apply, cloud creates the focus studied in recent years, its
There is extensive, enhanced scalability, the advantage such as cheap, it is possible to give the unprecedented computing capability of user, and " cloud "
Scale can with dynamic retractility, can meet application and userbase increase demand.Automatization's centralized management of " cloud " makes big
Amount enterprise is without bearing high cost, and the versatility of " cloud " makes the utilization rate of resource be substantially improved than legacy system, therefore,
User can spend less time, less fund, it becomes possible to realizes than preferably software and hardware service before.
According to existing Research Literature, existing remote finite element analysis method is based primarily upon Web technology and solves limited
The time space problem of meta-analysis, also cannot meet the finite element analysis demand that enterprise is diversified, personalized, also cannot realize in difference
Finite element analysis software and hardware resources is shared between enterprise.To this end, the present invention proposes a kind of finite element analysis service manufactured based on cloud
Method, is deployed in the software and hardware resources analyzing design on cloud manufacturing platform in the way of service, then by flexible combination
Some finite element analysis services meet Enterprise Diversification and analyze demand, thus realize providing personalization in the mode of " cloud " for enterprise
Analysis Service, thus save business capital and improve the enterprise analysis ability to self product.
Summary of the invention
The present invention is the above-mentioned deficiency overcoming existing finite element analysis technology, it is proposed that a kind of based on cloud manufacturing platform have
Finite element analysis method of servicing and system, its functional structure chart is as it is shown in figure 1, comprise the steps.
(1) product dimensional parametric design engine based on cloud manufacturing platform is built；
(1.1) product three-dimensional parametric modeling storehouse is set up；
In view of the product object of enterprise's finite element analysis is different, need first to set up product 3 d model library, and based on parameter
Change method is that enterprise provides product design interface, using threedimensional model based on Parametric designing as the object of finite element analysis,
Improve the suitability and the motility of finite element analysis.To this end, the threedimensional model of product will be carried out feature extraction, including length and width,
Height, diameter etc. drive the restriction relation between parameter, and each parameter, create 3 d model library, and model library is stored into cloud
End.
(1.2) exploitation dimensional parametric design service library；
Threedimensional model can be designed by dimensional parametric design engine according to design parameter, meets the design to product
Demand, design engine provides with the form in Web service storehouse, by the combination of design service meets the design need of individualities of enterprises
Ask.
Usually, design service is deployed on cloud manufacturing platform with the form of Web service, by connecing that Web service provides
Mouthful calling, it includes following kind of service:
(1.2.1) threedimensional model imports service: its major function is to import in design environment by the threedimensional model of selection,
Enterprise can carry out Parametric designing accordingly.The key procedure wherein servicing encapsulation is as follows:
StrfileName=App.Path+ " "+" part .SLDPRT " //strfileName represents threedimensional model path
Name
(1.2.2) design software service is started: its major function is to start Three-dimensional Design Software (such as SolidWorks etc.),
This is the main software carrying out three dimensional design on cloud manufacturing platform.The key procedure wherein servicing encapsulation is as follows:
Set swApp=CreateObject (" SldWorks.Application ") // startup SolidWorks
(1.2.3) Parametric designing service: its function is the parameter according to enterprise's design, based on three on cloud manufacturing platform
Dimension design software carries out three dimensional design, drives threedimensional model.
(1.3) dimensional parametric design interface is set up；
Dimensional parametric design interface is the man-machine interface of three-dimensional objects design, the feature ginseng extracted according to threedimensional model
Number, sets up dimensional parametric design interface, selects threedimensional model, In-put design parameter based on design interface, and checks and designed
The design result become, design result can realize based on VRML, provides the user detailed three dimensional design effect.
(2) finite element analysis engine based on cloud manufacturing platform is built；
(2.1) finite element analysis service library based on cloud manufacturing platform is developed；
The major function of finite element analysis engine is to analyze software to threedimensional model at cloud according to finite analysis parameter call
It is analyzed on manufacturing platform, then the result analyzed is returned.Analysis engine is deployed in cloud manufacture with the form in Web service storehouse
On platform, these Web services encapsulate the various analysis orders of finite element analysis software, and the interface provided by Web service
Call.
The type of finite element analysis service includes:
(2.1.1) finite element analysis software service is started: its major function is to start finite element analysis software, inputs limited
Meta-analysis file, and export Finite element analysis results file.
(2.1.2) product threedimensional model imports service: its major function is that three-dimensional finite element model design completed is led
Enter in analysis environments.
(2.1.3) cell type selects service: its major function is that the three-dimensional finite element model selected is carried out unit class
Type selects.
(2.1.4) material properties arranges service: its major function is that the material properties to three-dimensional finite element model sets
Put, including: elastic modelling quantity, Poisson's ratio, density.
(2.1.5) stress and strain model service: its major function is that model is carried out stress and strain model.Function is divided into two pieces, and one is
Being configured the size of grid, two is that model is carried out stress and strain model.Arrange due to sizing grid and stress and strain model has multiple
Kind, is packaged into different services so being arranged by different types of sizing grid with stress and strain model.When user is to different models
When carrying out finite element analysis, use different sizing grids to arrange and stress and strain model mode, call corresponding grid respectively and draw
Sub-service is engaged in.
(2.1.6) imposed load service: its major function is to model imposed load.
(2.1.7) boundary condition arranges service: its major function is that the boundary condition to model is configured.
(2.1.8) static analysis service: its major function is that FEM (finite element) model is carried out statics Analysis, and exports main formula
Deformation maximum upwards, and the node location of maximum and node serial number and result picture.
(2.1.9) analysis of fatigue service: its major function is that FEM (finite element) model carries out analysis of fatigue, and export tired point
The analysis daily record of analysis and result picture.
(2.1.10) model analysis service: major function is the frequency in model analysis post processing output step each order mode state
Rate, preserves each rank formation figure, and the vibration shape animation of each order mode state.
(2.2) finite element analysis service interface is set up；
Setting up finite element analysis service interface, enterprise customer's object can be based on service interface to being provided with finite element analysis
Correlation analysis parameter, as selected cell type, stress and strain model, arranging material properties, selection post processing type etc..
(3) Finite element analysis results preview based on cloud manufacturing platform；
(3.1) Finite element analysis results shows content；
Finite element analysis terminate after after, by automatic Display analytical structure, including:
1.. static analysis destination file: include the deformation maximum in Stress Map, total deformation figure and principal direction, and
The node location of maximum and node serial number.
2.. analysis of fatigue destination file.
3.. modal analysis result file, including the frequency of each order mode state, preserve each first order mode figure, and each order mode state
Vibration shape animation.
4.. analyze journal file.
(3.2) Finite element analysis results shows service；
The result correspondence of finite element analysis is encapsulated as Web service, for user's preview and download.
The invention have the advantage that
The present invention proposes a kind of finite element analysis method of servicing manufactured based on cloud, and finite element analysis is deployed to cloud system
Make on platform, in the way of service, be supplied to enterprise, on the one hand improve the ability of enterprise's finite element analysis, reduce enterprise and produce
The finite element analysis cost of product, on the other hand also is able to meet the finite element analysis demand that enterprise is diversified, personalized, in difference
Finite element analysis software and hardware resources is shared between enterprise.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention；
Fig. 2 is that step simplifies three-dimensional model diagram；
Fig. 3 is step Parametric designing interface；
Fig. 4 is that step finite element analysis arranges interface；
Fig. 5 is result display interface；
Fig. 6 is step finite element analysis Stress Map.
It is embodied as
As a example by the finite element analysis of escalator step, concrete to finite element method based on cloud service platform
Embodiment illustrates, and its functional structure chart is as it is shown in figure 1, specifically comprise the following steps that
(1) product dimensional parametric design engine based on cloud manufacturing platform is built；
(1.1) product three-dimensional parametric modeling storehouse is set up；
The threedimensional model of design escalator step, as in figure 2 it is shown, it is carried out feature extraction, including pedal thickness and
Two parameters of step width.
(1.2) exploitation dimensional parametric design service library；
For escalator step exploitation design service library, design service is deployed in cloud manufacture with the form of Web service and puts down
On platform, the interface provided by Web service is called, and it includes following kind of service:
(1.2.1) threedimensional model imports service: its major function is to import in design environment by step threedimensional model, enterprise
Industry can carry out Parametric designing accordingly.The key procedure of service encapsulation is as follows:
StrfileName=App.Path+ " "+" Rundle.SLDPRT " //strfileName represents threedimensional model road
Footpath name
(1.2.2) design software service is started: its major function is to start Three-dimensional Design Software (such as SolidWorks etc.),
This is the main software carrying out three dimensional design on cloud manufacturing platform.The key procedure of service encapsulation is as follows:
Set swApp=CreateObject (" SldWorks.Application ") // startup SolidWorks
(1.2.3) Parametric designing service: two Parametric designing services for cascade development, each service encapsulation
Key procedure is as follows:
Part.Parameter (" d1@sketch 1 " &strfileName) .SystemValue=a//part represents step three
Dimension module, d1 represents step pedal thickness, and " sketch 1 " represents sketch during modeling, the pedal thickness of a user's input
Part.Parameter (" d2@boss-stretching 1 " &strfileName) .SystemValue=b//d2 represent ladder
Level width, the stretching of step when " boss-stretching " represents modeling, b represents the step width that user inputs
(1.3) dimensional parametric design interface is set up；
Fig. 3 gives step Parametric designing interface, and dimensional parametric design interface is the human-machine interface of three-dimensional objects design
Mouthful, the characteristic parameter extracted according to threedimensional model, set up dimensional parametric design interface, select three-dimensional mould based on design interface
Type, In-put design parameter, and check the design result designed, design result can realize based on VRML, for user
Detailed three dimensional design effect is provided.
(2) finite element analysis engine based on cloud manufacturing platform is built；
(2.1) finite element analysis service library based on cloud manufacturing platform is developed；
The major function of finite element analysis engine is to three-dimensional mould according to finite analysis parameter call finite element analysis software
Type is analyzed on cloud manufacturing platform, then the result analyzed is returned.Analysis engine is deployed in the form in Web service storehouse
On cloud manufacturing platform, these Web services encapsulate the various analysis orders of finite element analysis software, and are provided by Web service
Interface call.
The type of finite element analysis service includes:
(2.1.1) finite element analysis software service is started: its major function is to start finite element analysis software, inputs limited
Meta-analysis file, and export Finite element analysis results file.The key procedure of service encapsulation is as follows:
V=Shell (". ansys140.exe-b-p ane3fl-I G: Rundle.mac-o G: an
file.log",vbNormalFocus)
(2.1.2) product threedimensional model imports service: its major function is the three-dimensional finite element its stage design completed
Model imports in analysis environments.The key procedure of service encapsulation is as follows:
～PARAIN, ' Rundle', ' x_t', ' G: ', SOLIDS, 0,0//call Rundle.x_t file
(2.1.3) cell type selects service: its major function is that the three-dimensional finite element model selected is carried out unit class
Type selects.The key procedure of service encapsulation is as follows:
ET, 1, SOLID92//cell type selects Solid92
(2.1.4) material properties arranges service: its major function is that the material properties to three-dimensional finite element model sets
Put, including: elastic modelling quantity, Poisson's ratio, density.The key procedure of service encapsulation is as follows:
MPDATA, EX, 1,7e10//elastic modelling quantity is set to 7e10
MPDATA, PRXY, 1,0.35//Poisson's ratio arranges 0.35
MPDATA, DENS, 1,2.7//density is set to 2.7e3g/mm3
(2.1.5) stress and strain model service: its major function is that model is carried out stress and strain model.Function is divided into two pieces, and one is
Being configured the size of grid, two is that model is carried out stress and strain model.Arrange due to sizing grid and stress and strain model has multiple
Kind, is packaged into different services so being arranged by different types of sizing grid with stress and strain model.When user is to different models
When carrying out finite element analysis, use different sizing grids to arrange and stress and strain model mode, call corresponding grid respectively and draw
Sub-service is engaged in.The key procedure of service encapsulation is as follows:
VMESH, ALL//grid is set to tetrahedron element
(2.1.6) imposed load service: its major function is to model imposed load.The key procedure of service encapsulation is such as
Under:
NSEL, S, LOC, X, 202//select X-coordinate node between 0～202
NSEL, R, LOC, Y, 39//and in the range of selecting, select Y coordinate node between 0～39
F, ALL, FY ,-3000//load is 3000N
(2.1.7) boundary condition arranges service: its major function is that the boundary condition to model is configured.Service encapsulation
Key procedure as follows:
LOCAL, 15,1,324,5 ,-88, ZJK//set up local coordinate system
NSEL, S, LOC, X, 16.75//select Node subsets
(2.1.8) static analysis service: its major function is that FEM (finite element) model is carried out statics Analysis, and exports main formula
Deformation maximum upwards, and the node location of maximum and node serial number and result picture.The key procedure of service encapsulation is such as
Under:
NSORT, U, Y//node data is ranked up
* GET, MAXUY, SORT, 0, MIN//acquisition maximum node position
* GET, MAXUYNUM, SORT, 0, IMIN//acquisition maximum node Position Number
* CFOPEN, StaticResutl, dat//open managers ass's destination file
* VWRITE//output
(" The maxumum UY is: ") //Y-direction maximum node Position Number
PLDISP, 0//show node result of calculation by isoline or cloud atlas mode
(2.1.9) analysis of fatigue service: its major function is that FEM (finite element) model carries out analysis of fatigue, and export tired point
The analysis daily record of analysis and result picture.The key procedure of service encapsulation is as follows:
FTSIZE, 1,1,2//specify fatigue data storage arrays
FSNODE, MAXNUM, 1,1//calculate the components of stress
FE, 1,5000000,1, EVE1//definition damage parameters
FTCALC, 1//fatigue mechanisms
(2.1.10) model analysis service: major function is the frequency in model analysis post processing output step each order mode state
Rate, preserves each rank formation figure, and the vibration shape animation of each order mode state.The key procedure of service encapsulation is as follows:
PLDISP, 0//show result of calculation by contour cloud atlas mode
ANMODE, 20,0.1,5//generate mode animation
/ ANFILE, SAVE, SET%I%, AVI//animation preserves
(2.2) finite element analysis service interface is set up；
Fig. 4 gives step finite element analysis and arranges interface, and it is finite element analysis human-machine interface that finite element analysis arranges interface
Mouthful, enterprise customer's object can be based on this interface to being provided with the correlation analysis parameter of finite element analysis, as selected cell type, net
Lattice divide, arrange material properties, select post processing type etc..
(3) Finite element analysis results preview based on cloud manufacturing platform；
(3.1) Finite element analysis results shows content；
What Fig. 5 was given is that Finite element analysis results shows interface, after finite element analysis terminates afterwards, by automatic Display analysis
As a result, including:
1.. static analysis destination file: include Stress Map, total deformation figure and pedal Direction distortion maximum, and
The node location of big value and node serial number.
2.. analysis of fatigue destination file.
3.. modal analysis result file, including the frequency of each order mode state, preserve each first order mode figure, and each order mode state
Vibration shape animation.
4.. analyze journal file.
(3.2) Finite element analysis results shows service；
The result correspondence of finite element analysis is encapsulated as Web service, for user's preview and download.With step finite element analysis
As a example by, what Fig. 6 was given is the Stress Map of step finite element analysis.
Claims (1)
1. a finite element analysis method of servicing based on cloud manufacturing platform, comprises the following steps:
(1) product dimensional parametric design engine based on cloud manufacturing platform is built；
(1.1) product three-dimensional parametric modeling storehouse is set up；
The threedimensional model of product will be carried out feature extraction, including length, the driving parameter of diameter, and between each parameter
Restriction relation, create 3 d model library, and model library be stored into high in the clouds；
(1.2) exploitation dimensional parametric design service library；
Threedimensional model can be designed by dimensional parametric design engine according to design parameter, meets the design need to product
Asking, design engine provides with the form in Web service storehouse, by the combination of design service meets the design need of individualities of enterprises
Ask；
Design service is deployed on cloud manufacturing platform with the form of Web service, and the interface provided by Web service is called,
It includes following kind of service:
(1.2.1) threedimensional model imports service: its major function is to import in design environment by the threedimensional model of selection, enterprise
Parametric designing can be carried out accordingly；The key procedure wherein servicing encapsulation is as follows:
StrfileName=App.Path+ " "+" part .SLDPRT " //strfileName represents threedimensional model pathname
(1.2.2) design software service is started: its major function is to start Three-dimensional Design Software, and this is enterprising at cloud manufacturing platform
The main software of row three dimensional design；The key procedure wherein servicing encapsulation is as follows:
Set swApp=CreateObject (" SldWorks.Application ") // startup SolidWorks
(1.2.3) Parametric designing service: its function is the parameter according to enterprise's design, sets based on three-dimensional on cloud manufacturing platform
Meter software carries out three dimensional design, drives threedimensional model；
(1.3) dimensional parametric design interface is set up；
Dimensional parametric design interface is the man-machine interface of three-dimensional objects design, and the characteristic parameter extracted according to threedimensional model is built
Vertical dimensional parametric design interface, selects threedimensional model, In-put design parameter based on design interface, and checks that has designed sets
Meter result, design result can realize based on VRML, provides the user detailed three dimensional design effect；
(2) finite element analysis engine based on cloud manufacturing platform is built；
(2.1) finite element analysis service library based on cloud manufacturing platform is developed；
The major function of finite element analysis engine is to analyze software to threedimensional model in cloud manufacture according to finite analysis parameter call
It is analyzed on platform, then the result analyzed is returned；Analysis engine is deployed in cloud manufacturing platform with the form in Web service storehouse
On, these Web services encapsulate the various analysis orders of finite element analysis software, and the interface provided by Web service is carried out
Call；
The type of finite element analysis service includes:
(2.1.1) finite element analysis software service is started: its major function is to start finite element analysis software, inputs finite element fraction
Analysis file, and export Finite element analysis results file；
(2.1.2) product threedimensional model imports service: its major function is that three-dimensional finite element model design completed imports to
In analysis environments；
(2.1.3) cell type selects service: its major function is that the three-dimensional finite element model selected is carried out cell type choosing
Select；
(2.1.4) material properties arranges service: its major function is that the material properties to three-dimensional finite element model is configured, bag
Include: elastic modelling quantity, Poisson's ratio, density；
(2.1.5) stress and strain model service: its major function is that model is carried out stress and strain model；Function is divided into two pieces, and one is to net
The size of lattice is configured, and two is that model is carried out stress and strain model；Arrange due to sizing grid and stress and strain model have multiple kind,
It is packaged into different services with stress and strain model so being arranged by different types of sizing grid；When different models are had by user
During finite element analysis, use different sizing grids to arrange and stress and strain model mode, call corresponding stress and strain model service respectively；
(2.1.6) imposed load service: its major function is to model imposed load；
(2.1.7) boundary condition arranges service: its major function is that the boundary condition to model is configured；
(2.1.8) static analysis service: its major function is that FEM (finite element) model is carried out statics Analysis, and exports in principal direction
Deformation maximum, and the node location of maximum and node serial number and result picture；
(2.1.9) analysis of fatigue service: its major function is that FEM (finite element) model is carried out analysis of fatigue, and exports analysis of fatigue
Analyze daily record and result picture；
(2.1.10) model analysis service: major function is in the frequency of model analysis post processing output step each order mode state, protects
Deposit each rank formation figure, and the vibration shape animation of each order mode state；
(2.2) finite element analysis service interface is set up；
Setting up finite element analysis service interface, enterprise customer's object can be correlated with point to being provided with finite element analysis based on this interface
Analysis parameter, including selecting cell type, stress and strain model, arranging material properties, selection post processing type；
(3) Finite element analysis results preview based on cloud manufacturing platform；
(3.1) Finite element analysis results shows content；
Finite element analysis terminate after after, by automatic Display analytical structure, including:
1.. static analysis destination file: include the deformation maximum in Stress Map, total deformation figure and principal direction, and maximum
The node location of value and node serial number；
2.. analysis of fatigue destination file；
3.. modal analysis result file, including: the frequency of each order mode state, preserve each first order mode figure, and the vibration shape of each order mode state
Animation；
4.. analyze journal file；
(3.2) Finite element analysis results shows service；
The result correspondence of finite element analysis is encapsulated as Web service, for user's preview and download.
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| CN108663933B (en) * | 2017-03-28 | 2021-07-09 | 中移（杭州）信息技术有限公司 | Manufacturing equipment combination obtaining method and cloud platform |
| CN109286653A (en) * | 2017-07-21 | 2019-01-29 | 埃森哲环球解决方案有限公司 | Intelligent cloud engineering platform |
| CN109286653B (en) * | 2017-07-21 | 2021-08-10 | 埃森哲环球解决方案有限公司 | Intelligent cloud engineering platform |
| CN108052693A (en) * | 2017-11-13 | 2018-05-18 | 广州市健齿生物科技有限公司 | A kind of tooth implant automates finite element analysing system |
| CN107992652A (en) * | 2017-11-20 | 2018-05-04 | 国家超级计算深圳中心(深圳云计算中心) | A kind of automation engineering computer sim- ulation method and system |
| 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 |
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