LMS模态试验与分析

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1、LMS模态分析:完整解决方案LMSModalAnalysisTechniquesDr.WeiChen–LMSShanghaiOffice内容提要1模态试验目的2模态试验分析工具2.1数采前端2.2试验手段2.3分析手段3模态仿真分析工具3.1预试验3.2相关性分析3.3结构修改及预测4综述2LMSModalAnalysisTechniques模态试验范畴:TransferSourceXthrough=Receiverthestructure•Engine•Noiseatdriver’s&•RotorPassengerears•Road•Steeringwhe

2、elshake•Gearbox&transmission•Rearviewmirror•Turbomachineryvibration•Wheel&tirell•Cabincomfort•Accessoriesaa•Structuralintegrity•Environmentalsourcesddiiss•oossSeatvibration•...MMllyy•CockpitNVHaa•...nnAASystemSystemTransferTransfer3LMSModalAnalysisTechniques模态试验目的:模态分析V结构固有属性分析V表现为

3、V共振频率V阻尼比V振型目的:V验证产品振动与噪声问题V提高产品耐久性V提高数字模型准确性4LMSModalAnalysisTechniques内容提要1模态试验目的2模态试验分析工具2.1数采前端2.2试验手段2.3分析手段3模态仿真分析工具3.1预试验3.2相关性分析3.3结构修改及预测4综述5LMSModalAnalysisTechniques模态试验工具:数采前端Lab/TestBenches:台架Potable:便携Mobile:移动M01&M05305310316Autonomy-low306slaveunit311slaveunit317sla

4、veunitpowerconsumption:Upto4hoursonACinternalbatteriesAC/DC/BatteryACorAC/DC/BatteryBroadoperatingStandardLANStandardSCSISCSIorWideSCSIconditions:OptionalLANSCSIoptional-10C>+55CVibration/shock:MIL-STD810F…6LMSModalAnalysisTechniquesLMSSCADASdataacquisitionfamilyModularandscalablef

5、oranyNVHapplicationAnysignalconditionyouwouldwant...TachoVoltageICPMicrophoneChargeTEDSBridgeDigitalAES/EBUTorsionalAnalogOUTDACLMSSCADASMobileLMSSCADASIIICompact-highchannelcountExtendedthroughputperformance&lowpower–wideoperatingconditionssignalconditioning7LMSModalAnalysisTechni

6、quesLMSSCADASdataacquisitionfamilyModularandscalableforanyNVHapplicationNumberofchannelsperframe4192SC3164120SC310460SC305440SCM0548SCM018LMSModalAnalysisTechniques内容提要1模态试验目的2模态试验分析工具2.1数采前端2.2试验手段2.3分析手段3模态仿真分析工具3.1预试验3.2相关性分析3.3结构修改及预测4综述9LMSModalAnalysisTechniques模态试验方法:锤激法Syst

7、emsuggestedparameters°Triggersettings°Windowparameters°AcquisitionbandwidthModalimpactProductiveimpacttestingguidesthe°Audiofeedbackoperatorthroughthe°Auto-rejectoverloadstestsetup°Auto-rejectdoubleimpactsandsetsupthe°Auto-acceptgoodaveragestestforhim°Auto-incrementhammerID10LMSMod

8、alAnalysisTechniques模态试验方法