ADAMS-Vibration-振动分析模块教程.ppt

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1、ADAMS/Vibration振动分析模块教程内容了解模块功能；了解Vibration与Linear模块的区别；使用Vibration模块进行虚拟振动试验及方案设计。VibrationIssuesFacingEngineersandDesignersHowcomfortableisride,whetherinautomobile,airplane,railcar,oroff-roadmachinery?Willexcitationsinonepartofsysteminteractwithanotherpartofsystem?Whenproblemsoccu

2、r,howcantheybeisolated?IndustryEffortsandMetricsGoodvibrationcharacteristicsarepurchasemotivatorandimprovecustomersatisfactionNeedgoodwaytomeasuredesignOptimumNVHoftenconflictswithotherattributessuchasdurabilityorvehicledynamicperformanceNeedwaytobalancecompetingrequirementsSignifica

3、nteffortspenttounderstandandquantifycustomerNVHrequirementsintoobjectivetermsanddefinespecifictestsrelatingtocustomereventsCurrentmethodsareexpensiveIndustryEffortsandMetricsNVHinvolvesbothobjectiveandsubjectivedevelopmentPartofprocesscanbequantifiedwithanalyticaltoolsSuppliersmust“t

4、une”theirsystems/components(rightthefirsttime)toprototypevehicleorelsetheyareresponsibleforNVHresolutionNeedwaytostudysystemIssuesoftendiscoveredlateinprototypedevelopmentresultinmoneyandtimelossValueindesigningrightwayTheNeedAwaytostudysystem-levelvibrationsthesamewayyoucannowstudys

5、ystem-levelmotionproblems…muchfaster!Solution:ExtendScopeofVirtualPrototypingMotion/PerformanceSafetyDurability/FatigueNoise/VibrationTakeyoursystemtodifferentoperatingpointstoanalyzevibratorybehavior(withouthavingtocreatenewmodels)Includeeffectsofhydraulics,controls,andothersubsyst

6、emsonvibrationcharacteristicsAnalyzesystemmodesincludingattachmentandothernonlinearcharacteristicsThreeReasonstoUseADAMS/VibrationAnalyzeVibratoryBehaviorinDifferentConfigurationsSatelliteExample:SystemeigenvaluesshiftaccordingtoPaneldeploymentangleLockingconditionContactconditionAc

7、tualspringratesThisshiftaffectsattitudecontrolmargin,pointingjittermagnitude,andstructuralloadingconditionsAnalyzeVibratoryBehaviorinDifferentConfigurationsRailcarExample:SystemeigenvaluesshiftaccordingtoEquivalentconicitySuspensionstiffnessesDampercharacteristicsThisshiftaffectsrai

8、lcarstabilit