1、振动噪声混合振动噪声混合建模建模技术技术及及工程实践工程实践分享分享SISW Simcenter3D N&V Team Vision of SimulationCapabilitySolver SpeedEfficiencySimcenterTM:Simulation and Test SolutionsEnabling“Digital Twin”for Closed Loop Performance EngineeringLMS Test.LabLMS Imagine.LabFemap STAR-CCM+HEEDS Engineering ServicesCapabilitySpeedUsa
2、bilityLMS Virtual.LabLMS SamtechNX CAENX NastranSimcenter 3DPreScanMadymoDelft-TyreEngineering ServicesMENTORFLOEFDFLOTTHERMInfolytica MAGNETBenefit from Test to Simulationl 测试验证仿真结果测试验证仿真结果l 测试验证仿真模型测试验证仿真模型l 测试作为仿真载荷输入测试作为仿真载荷输入l 测试作为仿真模型的一部分测试作为仿真模型的一部分Hybrid ModelingHybrid Modeling on NVH applic
3、ationHybrid Assembly of components.Components represented byTest modesNastran modesTest FRFsNastran FRFsFE representationImport loads from external source (Nastran op2 or test data)ResponsesHybrid or FE AssemblyModal Model FE ModelTest Modes or Test FRF ModelLoads(Test)Hybrid Modeling Use Case 1(AUT
4、O OEM-Modeling accuracy)Test Tire ComponentEquivalent model of a damperFE models of Subframe,Suspension Arms,Knuckle,Strut and Brake(Courtesy:A Hybrid Full Vehicle Model for Structure Borne Road Noise Prediction SAE Paper 2005-01-2467)Focus Modeling accuracyDamping Test RigHybrid Modeling Use Case 2
5、(AUTO OEM-mulecar)Full Vehiclein SimcenterTrimmed bodyExisting bodytyre/wheelSuspensionNew designNX.Nastran runLoads,e.g.from Test.LabAssembly SimcenterSuspension evaluationBush optimizationEarly stage Focus EfficiencyHybrid Modeling Use Case 3(AUTO OEM)FEM-FEM AssemblyBush optimizationMultiple Runs
6、Focus EfficiencyHEEDS MDOSimcenterProcess automationHybrid Modeling Use Case 4(Tier 1 Suppliers)Represent the body by measured or simulated FRFs in order to allow the NVH assessment based on the Tier 1 component.Being able to optimize the component towards full vehicle(interior)NVH performance provi
7、des a competitive advantage for Tier 1 supplierFocus Efficiency&AccuracySteering Manufacturer.Steering system with electric power steeringMeasured transfer functions to represent bodyHybrid Modeling(Efficiency)Elapsed TimeFull FE58:00 minHybrid SOL 1085:20 minHybrid SOL 1112:12 minFRF computation8:00 minSC vs VLLoadsResponseForcesResponseTEST MODESTEST FRFForcesResponseVL Modal Coupling MODESMODESVL FRF Coupling FE FRFFE FRFSimcenter 3DMODESMODESTEST MODESFE COMPONENTTEST FRF广汽广汽某款车型后排加速噪声过大泛亚一汽长城长城Simcenter 3DGood Selling！
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