Study On Multi Domain Unified Modeling And Assembly Platform For Mechanical Virtual Experiment Component

Experiment teaching is important content of mechanical engineering.It cultivates student’s innovative spirit and practical ability while they learnbasic theory and skills. With the progress of society and the expansion ofuniversities, the traditional physical experiment teaching can not meet thedemands of experiment teaching. The application of virtual mechanicalengineering experiment can help alleviate the shortage of experimentequipment, and also cultivate student’s innovation ability. It provides lowcost, fast income, safe experiment environment.Mechanical engineering experiment not only confined to puremechanical field. Quite a part of experiments reflects comprehensiveapplication of multiple areas of knowledge. Currently widely used virtualexperiment modeling methods have shortages such as time consuming inmodeling, limitation in the usage of model. Study of multi domain unifiedmodeling method will facilitate the application of virtual experimentalplatform.Based on in-depth analysis of multi domain unified modeling methodand mechanical engineering virtual experimental situation andinsufficiency, conducted the following study:First, with the analysis of the characteristics of Modelica unifiedmodeling language and its use method, summarizing mechanicalexperimental teaching content, mechanical engineering experimentalcomponent of multi-domain unified modeling is put forward and acomponent library is constructed. Meanwhile the inner relation between 3D models and Modelica models are analyzed. The complete modelexpress for mechanical engineering experimental components is proposed.Secondly, through the study of Modelica logic model, proposes theuse of XML language as unified storage for Modelica logic model and3Dvisualization model information data and the corresponding data structurespecification, and also the acquisition Modelica model information throughtraverse Modelica library and using flat Modelica model. In addition,through the analysis of scene XML model’s structure, put forward themethod that converting scene XML model into Modelica model. A bridgefor information transfer is built among virtual experiment platform, theModelica logical model and3D visualization model.Thirdly, through the analysis of PLT results file’s characteristics, putforward the XML data format for result storage. Through the analysis ofOSG matrix conversion’s characteristic, put forward mapping methodbetween XML outcome data and scene components, solved the virtualexperimental platform’s final technical problem.Finally, on the basis of above study, a Mechanical virtual experimentmulti-domain modeling and simulation platform is developed. The systemis applied in mechanical virtual experiment and validated.