外文翻譯--多學科系統級虛擬樣機建模與仿真技術

1、附錄附錄一 Multi-disciplinary hypothesized prototype modeling and simulation technologyAuthor: PRC technical department This article embarked from the current product design process to the multi-disciplinary union simulation demand, has analyzed the product coordination design to the simulation technolog

2、y three levels function demands, and drew out currently realizes the multi-disciplinary integrated simulation general method. The multi-disciplinary union simulation needs to control, the organization, the finite element and so on the different simulation environment integration and the data exchang

3、e, MSC.Software provided most systematic and the integrity multi-disciplinary coordination simulation development environment, this article in detail introduced MSC. The Software multi-disciplinary hypothesized prototype modeling and the simulation solution, and has produced the concrete example.1.m

4、ulti-disciplinary unions simulations demandIt is well known, the modern product research and development flow is the multi- people team, the multi-disciplinary domain coordination design process. In product performance history, regardless of is the plan principle design, the part level detailed para

5、meter specification design, all involves to many different subsystems and the related discipline domain, these subsystems all have the oneself specific function and the unique design method, but between various subsystems then has the cross-coupling function, composes the integrity together the func

6、tional system. Chart 1 the modern product process involves many subsystems and the related discipline domainHow does the effective coordinated each subsystem design teams work, let between the team achieve information sharing, helps supply each other, and guarantees the subsystem the design quality

7、and the overall performance, the realization product design true integration harmonious cooperation assimilation, thus the enhancement rated capacity, saves the design cost, reduces the development cycle, this is an extremely important question.In order to achieve the above goal, we must satisfy fol

8、lowing three levels the demand:First, has various subsystems and various disciplines domain effective integration simulation tool, thus guarantees various subsystems the design standard and the reliability:Chart 2 various disciplines domain different design toolSecond, can realize between various si

9、mulations tool seamless integration and the data exchange, realizes the model conformity under the unification overhead construction;Third, in order to can coordinate and manage each design team, as well as mass data which produces in the design process, realization resources optimization dispositio

10、n, but also must have the simulation data and the flow management platform, realizes various disciplines domain true coordination to imitate.2. multi-disciplinary coordination simulations general realization method At present more general and the popular realization multi-disciplinary integration si

11、mulation method mainly includes following three kinds:2.1 unions simulations type (Co-Simulation) The union simulation type is at present is general, also uses most one data exchange way, its data exchange principle like chart 3 shows, between two different simulations tools passes TCP/Way realizati

12、on data exchange and transfer and so on TCP/IP.Chart 3 union simulation -like basic principleAfter between two different simulations tools through the union simulation way establishment connection, one contains the model may the result which calculates own transmit as the system input instruction fo

13、r the model which another one establishes, this kind of instruction including the strength, the moment of force, the actuation and so on the typical signal, latter model the response quantity which produces in under this instruction function, like displacement, speed, acceleration and so on, also ma

14、y feed back gives former the model, like this, the model information and the simulation data may in two between directional transmissions.The union simulation way model application includes: Poly some dynamics and control system (for example vehicle control), structure and air operated load (for exa

15、mple aeronautical dynamics analysis), and so on. This is one kind is easiest to establish and the realization integrated simulation way, has very strong general, but limits lies in processes the rigid system with difficulty, takes many to the system resources, certain situation possible speeds to be

16、 slow.2.2 models transformations type (Model Transfer)Model transformation -like principle like chart 4 shows. Its main principle is transforms tool model for the specific form contains the model information the data file, for another tool in model transfer, thus realization information interactive.

17、 The typical data format like used in just shooting the coupling analysis the modality neutral document (*.mnf), contained in this document uses M , K , x the resonance oscillation matrix representation information; Uses in the control mechanism integration simulation as well as other simulations dy

18、namic link storehouse documents (*.dll), in this document contains uses the variable expression the function information.Chart 4 model transformation -like basic principleThe model transformation -like model application includes: The control, the battery solution and the organization integration sim

19、ulation (for example airplane control surface), the finite element and the poly some organization (for example just shot coupling mechanical system), and so on. This way characteristic lies in the solution speed quickly, takes few to the system resources, the stability is good, after and the model e

20、stablishment is advantageous for the repetition use, but limits then lies in needs to define the specific data format the document, the versatility misses slightly.2.3 solutions integrations type (Solver Convergence)The solution integration -like basic principle realizes between two different tools

21、solution code integrations, thus realizes in an among simulation environment to another simulation tool solution transfer, like chart 5 shows.Chart 5 solution integration -like basic principleThe solution integration -like model application includes: Has material non-linear problem the and so on the

22、 flexure large-scale structural model, has flows solid geometry non-linear problem the and so on the coupling, impact large-scale structure question, and so on. This way superiority lies in may facilitate the effective utilization many kinds of disciplines domain the solution technology, is advantag

23、eous for the user to use the existing model directly, but limits lies in the model certain factor like unit types, the function form and so on in certain situations needs to define, at the same time the software development and the promotion cycle is long.3. MSC.Software multi-disciplinary coordinat

24、ion simulation solutionIn view of multi-disciplinary coordination simulation three levels demands, MSC.Software provides current is most systematic and the integrity solution.First, MSC.Software provides integrated VPD modeling simulation environment MSC.SimOffice. MSC.SimOffice contains the one who

25、le set comprehensive VPD tool to use in simulation system each kind of performance, thus highly effective establishment various subsystems model, appraisal system performance.Next, MSC.Between the SimOffice various members has the seamless integrated ability, may realize the data exchange and the mo

26、del conformity, Establishment integrity integrated hypothesized prototype; MSC.SimOffice has the glorious development history, its members all are respective domain reside in the leading status the simulation tool, passed the massive engineering project examination, the knowledge and the experience

27、unceasing accumulation, has the greatly strengthened reliability and the stability. At present MSC.Between the SimOffice various members may facilitate through the different way realization model data alternately, the solution conformity and the computation process coordination, at the same time MSC

28、 positive development work, MSC.SimOffice various members transplant and conformity to unified overhead construction under, in order to the user may complete all analyses work under the unified contact surface environment.Chart 7 MSC.SimOffice realizes the complete function hypothesized prototypeOnc

29、e more, MSC.SimManager is the formidable simulation flow and the data management platform, provides the coordination and the management for the enterprise designs the personnel, the simulation tool, the model data unified overhead construction, the realization resources optimization disposes and com

30、bines, enhances the product development efficiency.3.1 MSC.SimOffice integration simulation wayAccording to realizes the integrated simulation three general methods respective superiority and the characteristic, unifies various simulations tool own characteristic and the use, MSC.Between SimOffice m

31、ember through different way realization conformity. MSC.EASY5 and MSC.ADAMS integration wayAt present MSC.EASY5 and MSC.ADAMS two between integration more and more close, the integrated way more and more is also rich. MSC.EASY5 and MSC.ADAMS may through the union simulation type, the model transform

32、ation type and the solution integration type three ways carries on the coordination simulation.* Union simulation type - By MSC.EASY5 and MSC.ADAMS solution solution respective model; - Step-by-steps the good data communication in the hypothesis time.* The model transformation type (control system i

33、nducts)-MSC.EASY5 establishes the control and the multi-disciplinary system induct MSC.ADAMS;- MSC. The EASY5 model took a set of GSE equation joins to MSC.ADAMS (dll dynamic link storehouse form introduction);- MSC.ADAMS solution integral computation all models;- In MSC. In ADAMS carries on the app

34、raisal to the control system performance, selects this method, may study the entire model in the control system initialization parameter situation the performance, carries on the unification the experimental design and the parameter optimization.* Solution integration type- MSC.ADAMS C+ solution int

35、egration in MSC. In EASY5, MSC. The EASY5 user may transfer MSC. Directly The ADAMS C+ solution calculates MSC.EASY5 model;- In MSC. In EASY5 modeling and simulation;- MSC.EASY5 can transfer directly in the backstage and move MSC.ADAMS C+ solution;- When simulation conclusion can automatically open

36、MSC. The ADAMS post-processing examines the simulation result.Chart 8 MSC.ADAMS and MSC.EASY5 realizes the integration of machinery simulation MSC.ADAMS, MSC.Nastran, MSC.Fatigue integration wayThese three between mainly carries on the integration through the model transformation way.* By MSC. Nastr

37、an carries on the finite element analysis to the part, the production includes the modality information the mnf document;* Inducts the mnf document MSC. In ADAMS, foundation hard and soft coupling model;* By MSC.ADAMS carries on dynamics analysis to the organization;* MSC. The ADAMS analysis obtains

38、 the load and the displacement equilateral condition may change over to MSC. Nastran carries on detailed analysis and so on stress, vibration, noise;* MSC. The ADAMS analysis obtains the load time course information may changes over to MSC. through DAC or the RPC III form document In Fatigue carries

39、 on the weary analysis.Chart 9 MSC.ADAMS and MSC.Nastran integration MSC.Nastran, MSC.Marc, MSC.Dytran integration way These three mainly through solution integration way realization conformity.* MSC.Nastran + hides type non-linear SOL600 (MSC.Marc);* MSC.Nastran + explicit non-linear SOL700 (LS-DYN

40、A);* Processes under the overhead construction in unified around to carry on the computation solution;* In MSC.In Nastran integrated MSC. completely Marc and LS-DYNA non-linear function;* Enormously expanded MSC.Nastran simulation scope and application domain.Chart 10 MSC.Nastran explicit non-linear

41、 solution SOL700 MSC.EASY5 and MSC.Nastran direct integrationAt present MSC.EASY5 and MSC.Nastran may through the model transformation way realization direct integration, thus permits in MSC.In EASY5 introduces the elastomer structure data, the solution control and the structure coupling question.Ch

42、art 11 MSC.EASY5 and MSC.Nastran direct integration3.2 MSC.SimOffice coordination simulation model application wayBy front article obviously, MSC.Between the SimOffice member may through the good integrated ability realization complex product integrated development. Contained the control, the struct

43、ure, the organization movement as well as the weary analysis in and so on in the multi-disciplinary multi- subsystems product development flow, we might pass MSC. in ahead of time the stage The EASY5 establishment including the control system and the multi-disciplinary dynamic system principle model

44、, passes MSC.Nastran/Marc/Dytran carries on the finite element analysis to the part, then MSC.EASY5 establishment control system model and MSC.The Nastran analysis elastomer model inducts MSC.In ADAMS, establishes the integration of machinery the function hypothesized prototype, passes MSC.ADAMS ana

45、lysis product movement situation, appraisal product performance. In MSC.In the ADAMS analysis process produces the load time course document, also may further induct to MSC.In Fatigue, carries on the detailed weary analysis. In MSC.In SimOffice may complete the entire product the development flow.Ch

46、art 12 MSC.SimOffice realization product integrity development flow3.3 MSC.SimOffice future overhead constructionAt present MSC.Software Corporation positive development work, MSC.The SimOffice various members transplant and the conformity to the unified overhead construction in, realize the more co

47、nvenient coordination simulation under the identical contact surface environment.Chart 13 MSC.SimOffice future overhead construction3.3 MSC.SimManager establishment coordination simulation platformIn the multi- teams, the multi- subsystems, in the multi-disciplinary domain product performance histor

48、y, only has various subsystems and various disciplines domain development kit, and realized each development kit integration still not to be able to achieve the complete coordination design, because in the performance history, involved to the different development personnel, the massive data and the

49、 information, as well as various subsystems different design flow. For the effective administrative personnel, the data and the design flow, cause the performance history realization true coordination, we also must have the simulation to manage the platform.MSC.SimManager is the current most formida

50、ble simulation data and the flow management system management system, for based on the IE gateway type management system, helps to manage the multi-disciplinary union simulation the multitudinous simulation tool, the flow and the data, carries on each kind of analysis under the unified platform, ent

51、erprises analysis staff and the resources optimization disposition, establishes the true coordination simulation platform.Chart 14 MSC.SimManager establishment coordination simulation platform4. multi-disciplinary 系統級 hypothesized prototypes development exampleBelow the example produces in the devel

52、opment flight control system aileron hydraulic pressure does moves the subsystem in the process, MSC. How joint operation is the SimOffice member, completes the overall system the integrated development duty. In the performance history, various simulations tool, the data and the development flow man

53、agement passes MSC.SimManager realization.The traditional flight control system development mainly relies on the airplane the experiment, this experiment usually applies in the system synthesis as well as the function test. On must carry on the massive different types in the mockup the physical test

54、ing, by guarantees the design the accuracy. If considered merely the airplane aileron operates the response to the pilot the speech, airplane experiment quite ideal.But the airplane experiments the biggest shortcoming to lie in, it the airplane consideration is the rigid body, moreover cannot includ

55、e the aerodynamics the factor, the integrity flight load (is merely a load) as well as the elastomer influence. These factors regarding the design influence are quite big in fact.Moreover, if total dependence airplane experiment, then brings the development cycle and the cost all are cannot be accep

56、ted.With the aid of in MSC.The Software VPD technology, establishes 功能化 the numeral airplane, may in the simulation above consider completely the key aspect influence, at the same time may reduce the physical prototype the trial manufacturing and the experiment, saves the development cost, reduces t

57、he development cycle.Chart 15 MSC.SimOffice realizes the complete system simulationComplete development flow as follows:Chart 16 integrity development flow附錄二多學科系統級虛擬樣機建模與仿真技術本文從當前產品設計過程對多學科聯合仿真的需求出發(fā)，分析了產品協同設計對仿真技術三個層次的功能需求，并引出當前實現多學科集成仿真的一般方法。多學科聯合仿真需要控制、機構、有限元等不同仿真環(huán)境的集成和數據交換，MSC.Software提供最為系統和完整的

58、多學科協同仿真開發(fā)環(huán)境，本文詳細介紹了MSC.Software多學科系統級虛擬樣機建模和仿真的解決方案，并給出了具體的實例。1多學科聯合仿真的需求 眾所周知，現代產品的研發(fā)流程是多人團隊、多學科領域的協同設計過程。在產品開發(fā)過程中，無論是系統級的方案原理設計，還是部件級的詳細參數規(guī)格設計，都涉及到多個不同的子系統和相關學科領域，這些子系統都有自己特定的功能和獨特的設計方法，而各子系統之間那么具有交互耦合作用，共同組成完整的功能系統。 圖1 現代產品過程涉及多個子系統和相關學科領域如何有效的協調各個子系統設計團隊的工作，讓團隊之間到達信息共享、互通有無，并保證子系統的設計質量和整體性能，實現產品

59、設計真正的一體化和協同化，從而提高設計效率，節(jié)省設計本錢，縮短開發(fā)周期，這是一個非常重要的問題。為了到達上述目標，我們必須滿足以下三個層次的需求：第一，具備各子系統和各學科領域有效的集成仿真工具，從而保證各子系統的設計水準和可靠性； 圖2 各學科領域的不同設計工具第二，能夠實現各仿真工具之間的無縫集成和數據交換，在統一架構下實現模型整合；第三，為了能夠協調和管理各設計團隊，以及在設計過程中產生的大量數據，實現資源優(yōu)化配置，還必須具有仿真數據和流程的管理平臺，實現各學科領域的真正協同仿真。2多學科協同仿真的一般實現方法 目前較為通用和流行的實現多學科集成仿真的方法主要包括以下三種：2.1 聯合仿

60、真式Co-Simulation 聯合仿真式是目前較為通用，也是使用最多的一種數據交換方式，其數據交換原理如圖3所示，兩個不同仿真工具之間通過TCP/IP等方式實現數據交換和調用。圖3 聯合仿真式的根本原理當兩個不同仿真工具之間通過聯合仿真方式建立連接后，其中一者所包含的模型可以將自己計算的結果作為系統輸入指令傳遞給另一者所建立的模型，這種指令包括力、力矩、驅動等典型信號，后者的模型在該指令的作用下所產生的響應量，如位移、速度、加速度等，又可以反應給前者的模型，這樣，模型信息和仿真數據就可以在兩者之間雙向傳遞。聯合仿真方式的典型應用有：多體動力學與控制系統如車輛控制、結構與氣動載荷如飛行動力學分