摘要
Theefficiencyandaccuracyaretwomostconcernedissuesinthemodelingandsimulationofmulti-bodysystemsinvolvingcontactandimpact.Thispaperproposedaformulationbasedonthecomponentmodesynthesismethodforplanarcontactproblemsofflexiblemulti-bodysystems.Aflexiblebodyisdividedintotwoparts:acontactzoneandanun-contactzone.Fortheun-contactzone,byusingthefixed-interfacesubstructuremethodasreference,afewlow-ordermodalcoordinatesareusedtoreplacethenodalcoordinatesofthenodes,andmeanwhile,thenodalcoordinatesofthelocalimpactregionarekeptunchanged,thereforethetotaldegreesoffreedom(DOFs)aregreatlycutdownandthecomputationalcostofthesimulationissignificantlyreduced.Byusingadditionalconstraintmethod,theimpactconstraintequationsandkinematicconstraintequationsarederived,andtheLagrangeequationsofthefirstkindofflexiblemulti-bodysystemareobtained.Theimpactofanelasticbeamwithafixedhalfdiskissimulatedtoverifytheefficiencyandaccuracyofthismethod.
出版日期
2013年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
