Research on Implement Technology of Multibody System Virtual Prototype Oriented CAD Component Model

To analyze the performance of multibody mechanical system at the preliminary design stage of virtual prototyping,virtual prototype D3MECHS oriented CAD component was developed which were integrated CAD model and multibody dynamics simulation. Comparing with 3D-CAD CAXA and SolidWorks,the principle and methods to extract geometrical and physical attributes and topological structure of multibody system from the tentative CAD model of parts and assembly design were researched. Engineering analysis model (EAM) and algorithm of virtual prototype visualization and simulation on CAD-OpenGL were proposed. Oriented-Object mechanical virtual prototype simulations architecture was proposed. Benchmark example from multibody handbook was verified. It proves that implement scheme of D3MECHS is valid.