CN100570615C - Grid application middleware system towards the distributed automobile safety collaborative design - Google Patents
Grid application middleware system towards the distributed automobile safety collaborative design Download PDFInfo
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Abstract
The present invention discloses a kind of grid application middleware system towards the distributed automobile safety collaborative design, comprise: finite element model assembling service module, emulation monitoring service module, resolution service module as a result, the CAE model that each side provided that described finite element model assembling service module will participate in collaborative design automatically assembles, so that finally form the car load CAE digital model that can find the solution; Described emulation monitoring service module realizes FEM (finite element) calculation function, the computation process control function of car crass, calculates measuring ability and finite element model authentication function; The described module of resolution service as a result realizes that above-mentioned three modules are interrelated, or independent operating to collision result's fractionation function.The present invention is by to rationally the cutting apart of whole finite element model, and the extraction technique of solving result, has hidden gordian technique, thereby has solved the confidentiality demand of collaborative each side to intellecture property.
Description
Technical field
The present invention relates to the system in a kind of Computer Applied Technology field, specifically is a kind of grid application middleware system towards the distributed automobile safety collaborative design.
Background technology
Along with popularizing of globalization production form, collaborative design becomes the personage of auto manufacturing question of common concern between car load merchant and the parts merchant.Especially the safety Design of automobile; this type of design relates generally to CAE (computer-aided analysis) analytic process; and the CAE modeling technique is the intellecture property that collaborative each side does one's utmost to protect; be to comprise the information that a large amount of need are maintained secrecy on the one hand, as the constitutive relation of modeling technique, material and the geological information of vehicle etc. because carry out the finite element model of crashworthiness emulation.In addition, as parts merchant during simultaneously with a plurality of car load merchant cooperation, these parts merchant does not allow and obtains the car load data; Perhaps, when two the parts merchant of competition provided service for a car load merchant simultaneously mutually, the parts merchant did not wish that the other side obtains the property right information of oneself yet.Extensively take the car load merchant to provide whole vehicle model for the parts merchant at automobile manufacturing field at present, the parts merchant is according to this modelling and add partial model, finally forms solving model.This mode obviously can not satisfy the demand that intellecture property is maintained secrecy.Yet when project of a plurality of member's fellowships, message must be able to be transmitted between the member, to reach the purpose of information sharing.Therefore, how to make each collaborative side share minimum information and realize the collaborative critical problem that becomes smoothly.This makes that also how to realize that such collaborative solution becomes has more challenge.
Present collaborative design system adopts distributed computing technology to make up more, as CORBA (Common Object Request Broker Architecture), DCOM (Distributed Component Object Model (DCOM)), J2EE (Java 2 Platform Enterprise Edition) etc., be only limited to the static fields of customization by the distribution applications program of these technical construction, hardware and software environment in the cooperative surroundings is constant substantially, and resource sharing is subjected to the restriction of static fields.In recent years the problem that mainly solves of the gridding technique of Xing Qiing is the resource sharing and the dynamic cooperative problem solyint of multimachine structure Virtual Organization.The grid agreement WSRF (Web service resource framework) of grid agreement OGSI (open grid service infrastructure) and a new generation is based on the Web service technology.This technology is not limited by the static fields of resource, is adapted to realize in dynamic environment whole resource sharings and designer's collaborative interactive in many ways.Existing increasing the application uses gridding technique to make up, and comprises medical system, physical application system, astronomical application system etc.
Find through literature search prior art, Gerlicher etc. are at CDVE (design, visualization, and engineering), " A Framework for Real-TimeCollaborative Engineering in the Automotive Industries " (" towards the framework of automobile real-time collaborative design " of publishing an article on the 2006:164-173, international collaborative design, visual and engineering conference is recorded, 2006:164-173), this article is used the co-architecture of CSCW (computer supported cooperative work) technology proposition and based on car load merchant and parts merchant the whole of model information is shared, when there is the confidentiality demand in the each side that participates in working in coordination with to its model information, obviously, this framework is inappropriate.And this framework is not supported the CAE collaborative design of relative complex only at the automotive electronics design field.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of grid application middleware system towards the distributed automobile safety collaborative design is proposed, be the general automotive crash safety collaborative design system of exploitation normalized basic application service is provided, service in this Application Middleware system is by rationally cutting apart whole finite element model, and the extraction technique of solving result, hidden gordian technique, thereby solved the confidentiality demand of collaborative each side intellecture property.
The present invention is achieved through the following technical solutions, and the present invention includes three parts: finite element model assembling service module, emulation monitoring service module, resolution service module as a result.Wherein: the CAE model that each side provided that described finite element model assembling service module will participate in collaborative design automatically assembles, so that finally form the car load CAE digital model that can find the solution.This module is accepted SOAP (Simple Object Access Protocol) service request information with XML (XML (extensible Markup Language)) coded format from remote application, through finite element model assembling service processing, generates the whole vehicle model file.This module is called the modelling verification function in the emulation monitoring service module again automatically then, verifies the correctness of generation model.The whole vehicle model that empirical tests is qualified will be returned to the application end of calling this service by the host-host protocol that the basic grid middleware system provides.If whole vehicle model is incorrect, then return to the upper layer application error message, so that upper layer application is according to this information correction master mould.
Described emulation monitoring service module realizes FEM (finite element) calculation function, the computation process control function of car crass, calculates measuring ability and finite element model authentication function, and it calculates, control function mainly realizes by the api interface that the emulation monitor service provides.The finite element model of the input information of this module for finding the solution, and control the call parameter of finding the solution, find the solution the time etc. as CPU number, maximum.The finite element model of input can assemble service module by finite element model to be provided, and can certainly directly be provided by the agreement that the basic grid middleware system provides by remote application.Controlled variable is by having the SOAP information transmission of XML coded format.The output information of this module is the destination file of finding the solution, and the descriptor document of solution procedure.
The described module of resolution service as a result realizes the fractionation function to the collision result.This module be input as collision destination file and component representation information to be split.Destination file can be finished the transmission of file by the host-host protocol that the basic grid middleware system provides, and also can accept the destination file of emulation monitoring service module output; Partial model information is by having the SOAP information transmission of XML coded format.This module obtains the destination file of each parts according to by the fractionation algorithm of resolution service realization as a result the destination file of input being handled.The host-host protocol that destination file provides by the basic grid middleware system is back to the service call end.
When practical application, each module both can be interrelated according to specific requirement, again can independent operating.The api interface that provides by each module between them is connected to each other, and the SOAP information of using by the XML form with the external world is connected.Also can call certain service module separately by SOAP information, to finish application in a certain respect by remote application.
Application Middleware of the present invention system runs in the grid system of SOA (Service-Oriented Architecture Based).The basis middleware system must have the mesh architecture of OGSA (open grid service system) or WSRF, is that grid application middleware system and graticule applied system provide service interface with the form of serving, for example above-mentioned file transfer protocol (FTP).The form of service can be mesh services or Web service.Underlying operating system under the integration environment need have the network operating system of http protocol, supports LAN (Local Area Network) and wide area network running environment.
Described finite element model assembling service, be between car load merchant and the parts merchant when work in coordination with the automotive crash safety collaborative design, in order to realize the confidentiality of model information separately, the assembling that car load and parts need realization nothing interference under transparent mutually situation.The approach that solves is the car load merchant only provides parts to be designed for the parts merchant a environmental model (comprising CAD and CAE model), and the parts merchant is according to the cad model of these modelling parts.Then, the parts merchant is the modeling rule of its formulation according to the car load merchant, divides grid on completed cad model basis, imposes restriction to set up the CAE model.This model should contain and the contacting and link information of car load.At last by parts CAE model and car load CAE model merging become the car load CAE digital model that complete have find the solution form of JAVA language with the ASCII form.In parts merchant design process, had to the parts environmental model, and the model assembling process do not need the third party to intervene, thereby farthest protected car load merchant's modeling information, realized function to intellectual property protection.
Described emulation monitor service is the realization to finite element solving device encapsulation commonly used.This service module need select specific solver that it is carried out finite element solving calculating, and solution procedure need possess controllability, and that is to say to have the calculating monitoring function.Therefore serve the interface API that the demonstration, the time-out that contain the state of finding the solution calculated, stopped to calculate, restarting functions such as calculating.
The described module of resolution service as a result; its as a result resolution service be meant; in the collaborative design process; in order to protect intellecture property separately; also to decompose for car load result of calculation, obtain the result of calculation that himself model produced so that each participates in collaborative tissue according to each member's role in the collaborative design.
Described resolution service as a result, for the destination file of ASCII (ASCII(American Standard Code for information interchange)) coding form, as the movable information of node, the energy information of parts, need according to the ID scope under the parts, use the JAVA language the long and file is carried out the character stream operation.Specifically be with ID number be key word extracts associated components, unit, node in destination file information, re-construct a destination file that only contains this component information then, and the information of extracting write.It is consistent with the overall result file layout that this destination file form keeps, so that support general after-treatment system.
Described resolution service as a result for the destination file of Binary (scale-of-two) coding form, as stress, strain, animation information, is used the anti-method of asking to carry out the result and is decomposed.Specifically be, use the JAVA language that the parts environment CAE model and the parts CAE model of ASCII form are carried out the character stream operation, extract whole model informations, the parts of environmental model, unit, node, the material information of parts, and the link information of parts and environment, so that form the anti-CAE model of asking.Then from total calculating result, extract the displacement information of all nodes on x, y, three directions of z on the environmental model.Then the form of this displacement information with boundary condition is applied on the anti-CAE of the asking model.By calling the emulation monitor service, find the solution the newly-generated anti-CAE of asking model at last, the destination file of gained binary coding form is exactly the destination file that only contains component information.
The finite element model assembling service of Application Middleware of the present invention system and as a result resolution service all embodied the demand of cooperation part in the vehicle safety collaborative design process to himself intellectual property protection, thereby widened collaborative range of application.Described emulation monitor service is integrated in vehicle safety is analyzed finite element solving device interface commonly used has certain versatility.
The present invention is compared with prior art maximum is not both the demand to himself intellectual property protection of cooperation part in the vehicle safety collaborative design process that realized.This Application Middleware makes automobile component merchant and car load merchant in the process of collaborative design, has farthest protected ins and outs separately, can allow and cooperate between the producer " relieved ", thereby widen collaborative range of application.In addition, Application Middleware of the present invention has also comprised the common function module that the vehicle safety design system need possess, as finds the solution calculation services, thereby has simplified the complexity of developing this type systematic, has improved work efficiency.
Description of drawings
Fig. 1 is the car load finite element model in the embodiment of the invention.
Fig. 2 be in the embodiment of the invention car door with and environmental model.Wherein: a) car door environment finite element model, b) car door finite element model.
Fig. 3 is a structural drawing of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 3, present embodiment comprises finite element model assembling service module, emulation monitoring service module, resolution service module as a result.Above-mentioned three modules are interrelated, or independent operating, the api interface that provides by each module between them is connected to each other, the SOAP information of using by the extensible markup language form with the external world is connected, perhaps call certain service module separately by SOAP information, to finish application in a certain respect by remote application.
The CAE model that each side provided that described finite element model assembling service module will participate in collaborative design automatically assembles, so that finally form the car load CAE digital model that to find the solution, this module is accepted the SOAP service request information with extensible markup language coded format from remote application, through finite element model assembling service processing, generate the whole vehicle model file, this module is called the modelling verification function in the emulation monitoring service module again automatically then, verify the correctness of generation model, the whole vehicle model that empirical tests is qualified will be returned to the application end of calling this service by the host-host protocol that the basic grid middleware system provides.If whole vehicle model is incorrect, then return to the upper layer application error message, so that upper layer application is according to this information correction source model.
Described emulation monitoring service module realizes FEM (finite element) calculation, the computation process control of car crass, calculate and detect and the finite element model checking, it calculates, control function realizes by the api interface that the emulation monitor service provides, the finite element model of the input information of this module for finding the solution, and the parameter found the solution of control, controlled variable is by having the SOAP information transmission of extensible markup language coded format, the output information of this module is the destination file of finding the solution, and the descriptor document of solution procedure.
The described module of resolution service as a result realizes the fractionation to the collision result, this module be input as the collision destination file, and component representation information to be split, the host-host protocol that destination file provides by the basic grid middleware system is finished the transmission of file, perhaps accept the destination file of emulation monitoring service module output, partial model information is by having the SOAP information transmission of extensible markup language coded format, this module is according to by the fractionation algorithm of resolution service realization as a result the destination file of input being handled, obtain the destination file of each parts, the host-host protocol that destination file provides by the basic grid middleware system is back to the service call end.
The present invention is applicable to that great majority have the vehicle safety collaborative design system of SOA framework, and in the similar CAE remote collaborative design system.Below provide the description of concrete application example.
As shown in Figure 1 and Figure 2, this exemplary application scene is the vehicle safety collaborative design between car door manufacturer and the car load merchant, and resource merchant provides computational resource and data storage resource.Running environment is underlying operating system with Windows XP Professional, VEGA GOS (Vega grid, be called for short VEGA) (this middleware system is formed by independent development on the Chinese Academy of Sciences calculating Globus Toolkit basis, place as the basic grid middleware system, use is based on the OGSA mesh architecture of SOA, SOAP is the communications protocol between distributed system, this cover software can openly obtain by Vega website), the form of application system is that the Portal of vehicle safety collaborative design uses.
According to the concrete application scenarios of this example, described each module communicates with one another by the api interface that has separately, to realize the vehicle safety collaborative design between car load merchant and the car door parts merchant.
At first, the car load merchant and the car door parts merchant that are in the strange land provide each self model by using portal to finite element model assembling service module respectively, and this process is undertaken by the file transfer services module that VEGA has.This module is called the modelling verification function in the emulation monitoring service module again automatically then, verifies the correctness of generation model.The whole vehicle model that empirical tests is qualified will return to the car load merchant by the file transfer services module that VEGA provides.If whole vehicle model is incorrect, then return error message, so that the car load merchant is according to this information correction source model.
Then, resulting car load finite element model, and control the parameter of finding the solution (CPU number, maximum are found the solution the time) passes to the emulation monitoring service module by VEGA the computing function of finding the solution.This example uses demonstration finite element solver LS-DYNA interface to finish calculating.Its output information is the destination file of finding the solution, and comprises animation file D3PLOT, text nodout, and the descriptor document message of solution procedure.
At last, these destination files, and car door parts id information passes to resolution service module as a result by VEGA as input parameter.This module is respectively to animation file D3PLOT, and text nodout separates the car door result according to the car door parts ID that is provided from the complete results file.According to the difference of result type, two kinds of decomposition methods are used in this service.
For the nodout destination file,, use the JAVA language the long and file is carried out the character stream operation according to the ID scope under the parts.Specifically be with ID number be key word extracts associated components, unit, node in destination file information, re-construct a destination file that only contains this component information then, and the information of extracting write.It is consistent with the overall result file layout that this destination file form keeps, so that support general after-treatment system.
Decomposition for D3PLOT result.Use the JAVA language that the parts environment CAE model and the parts CAE model of ASCII form are carried out the character stream operation, extract whole model informations, the parts of environmental model, unit, node, the material information of parts, and the link information of parts and environment, so that form the anti-CAE model of asking.Then from total calculating result, extract the displacement information of all nodes on x, y, three directions of z on the environmental model.Then the form of this displacement information with boundary condition is applied on the anti-CAE of the asking model.By calling the emulation monitor service, find the solution the newly-generated anti-CAE of asking model at last, gained D3PLOT destination file is exactly the destination file that only contains component information.
Characteristics of the present invention are: embodied in the vehicle safety Process in Cooperative Design cooperation part to himself intellectual property The demand of protection. The model that the present invention is not only applicable to single part merchant and car load merchant synthesizes, and also is applicable to a plurality of parts The merchant with carry out the environment that finite element simulation calculates with the carload merchant is collaborative; Not only collaborative for the security of automotive field Design is in the same suitable and similar CAE remote system design system.
Claims (9)
1, a kind of grid application middleware system towards the distributed automobile safety collaborative design is characterized in that, comprises finite element model assembling service module, emulation monitoring service module, resolution service module as a result, wherein:
The CAE model that each side provided that described finite element model assembling service module will participate in collaborative design automatically assembles, so that finally form the car load CAE digital model that to find the solution, this module is accepted the SOAP service request information with XML (extensible Markup Language) coded format from remote application, through finite element model assembling service processing, generate the whole vehicle model file, this module is called the modelling verification function in the emulation monitoring service module again automatically then, verifies the correctness of generation model;
In the described finite element model assembling service processing, when working in coordination with the automotive crash safety collaborative design, the car load merchant only provides the environmental model of parts to be designed for the parts merchant between car load merchant and the parts merchant;
Described emulation monitoring service module realizes FEM (finite element) calculation, the computation process control of car crass, calculate and detect and the finite element model checking, it calculates, control function realizes by the api interface that the emulation monitor service provides, the finite element model of the input information of this module for finding the solution, and the parameter found the solution of control, controlled variable is by having the SOAP information transmission of XML (extensible Markup Language) coded format, the output information of this module is the destination file of finding the solution, and the descriptor document of solution procedure;
The described module of resolution service as a result realizes the fractionation to the collision result, this module be input as the collision destination file, and component representation information to be split, the host-host protocol that destination file provides by the basic grid middleware system is finished the transmission of file, perhaps accept the destination file of emulation monitoring service module output, partial model information is by having the SOAP information transmission of XML (extensible Markup Language) coded format, this module is according to by the fractionation algorithm of resolution service realization as a result the destination file of input being handled, obtain the destination file of each parts, the host-host protocol that destination file provides by the basic grid middleware system is back to the service call end;
Described resolution service as a result is meant: in the collaborative design process, decomposes according to each member's role in the collaborative design for car load result of calculation,
Above-mentioned three modules are interrelated, or independent operating, the api interface that provides by each module between them is connected to each other, the SOAP information of using by the XML (extensible Markup Language) form with the external world is connected, perhaps call certain service module separately by SOAP information, to finish application in a certain respect by remote application.
2; grid application middleware system towards the distributed automobile safety collaborative design according to claim 1; it is characterized in that; in the described finite element model assembling service processing: the parts merchant is according to the cad model of these modelling parts; then; the parts merchant is the modeling rule of its formulation according to the car load merchant; on completed cad model basis, divide grid; impose restriction to set up the CAE model; this model should contain and the contacting and link information of car load; at last by parts CAE model and car load CAE model merging become the car load CAE digital model that complete have find the solution form of JAVA language with the ASCII form; in parts merchant design process; had to the parts environmental model; and the model assembling process do not need the third party to intervene, thereby farthest protected car load merchant's modeling information.
3, the grid application middleware system towards the distributed automobile safety collaborative design according to claim 1 and 2, it is characterized in that, in the described finite element model assembling service module, the whole vehicle model that empirical tests is qualified will be returned to the application end of calling this service by the host-host protocol that the basic grid middleware system provides, if whole vehicle model is incorrect, then return to the upper layer application error message, so that upper layer application is according to this information correction master mould.
4, the grid application middleware system towards the distributed automobile safety collaborative design according to claim 1, it is characterized in that, described emulation monitoring service module, its emulation monitor service is meant: to the realization of finite element solving device encapsulation commonly used, the emulation monitoring service module selects solver that it is carried out finite element solving calculating, and solution procedure need possess controllability, and demonstration, time-out that this service contains the state of finding the solution calculate, stop to calculate, restarting the interface API of calculating.
5, according to claim 1 or 4 described grid application middleware systems towards the distributed automobile safety collaborative design, it is characterized in that, described emulation monitoring service module, the finite element model of its input is provided by finite element model assembling service module, is perhaps directly provided by the agreement that the basic grid middleware system provides by remote application.
6, the grid application middleware system towards the distributed automobile safety collaborative design according to claim 1, it is characterized in that, in the described resolution service as a result: each participation is done tissue together and is obtained the result of calculation that himself model produced, and obtains the destination file of each parts.
7, according to claim 1 or 6 described grid application middleware systems towards the distributed automobile safety collaborative design, it is characterized in that, the described module of resolution service as a result, at it as a result in the resolution service, for the destination file of ASCII coding form,, use the JAVA language the long and file is carried out the character stream operation according to the ID scope under the parts, for the destination file of binary coding form, use the anti-method of asking to carry out the result and decompose.
8, the grid application middleware system towards the distributed automobile safety collaborative design according to claim 7, it is characterized in that, the described module of resolution service as a result, destination file for the ASCII coding form, be to be key word extracts associated components, unit, node in destination file information with ID number, re-construct a result of information file that only contains these parts then, and the information of extracting write, it is consistent with the overall result file layout that this destination file form keeps, so that support general after-treatment system.
9, grid application middleware system towards the distributed automobile safety collaborative design according to claim 7, it is characterized in that, the described module of resolution service as a result, destination file for the binary coding form, use the JAVA language that the parts environment CAE model and the parts CAE model of ASCII form are carried out the character stream operation, extract whole model informations of parts, the parts of environmental model, the unit, node, material information, and the link information of parts and environment, so that form the anti-CAE model of asking, then from total calculating result, extract on the environmental model all nodes at x, y, displacement information on three directions of z, then the form of this displacement information with boundary condition is applied on the anti-CAE of the asking model, at last by calling the emulation monitor service, find the solution the newly-generated anti-CAE of asking model, the destination file of gained binary coding form is exactly the destination file that only contains component information.
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| CN101916322A (en) * | 2010-09-07 | 2010-12-15 | 上海奕代汽车技术有限公司 | Optimization design method for sagging problem of car door based on CAE (Computer Aided Engineering) structural analysis |
| CN104077428B (en) * | 2014-02-26 | 2017-07-28 | 浙江工业大学 | A kind of remote finite element analysis method of service industry alliance |
| CN105224769A (en) * | 2015-10-30 | 2016-01-06 | 北京蓝威技术有限公司 | A kind of CAE data processing method of sing on web browser and system |
| CN108228937A (en) * | 2016-12-21 | 2018-06-29 | 华晨汽车集团控股有限公司 | A kind of steering mechanism simulation method based on CAE |
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| 协同设计网格及其关键技术. 李治，金先龙，姜恺，桂亚东.上海交通大学学报，第39卷第12期. 2005 |
| 协同设计网格及其关键技术. 李治，金先龙，姜恺，桂亚东.上海交通大学学报，第39卷第12期. 2005 * |
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