![现代机械工学(虚拟机床)课件_第1页](http://file4.renrendoc.com/view/300239832a4d50ee0cc4be0568147a26/300239832a4d50ee0cc4be0568147a261.gif)
![现代机械工学(虚拟机床)课件_第2页](http://file4.renrendoc.com/view/300239832a4d50ee0cc4be0568147a26/300239832a4d50ee0cc4be0568147a262.gif)
![现代机械工学(虚拟机床)课件_第3页](http://file4.renrendoc.com/view/300239832a4d50ee0cc4be0568147a26/300239832a4d50ee0cc4be0568147a263.gif)
![现代机械工学(虚拟机床)课件_第4页](http://file4.renrendoc.com/view/300239832a4d50ee0cc4be0568147a26/300239832a4d50ee0cc4be0568147a264.gif)
![现代机械工学(虚拟机床)课件_第5页](http://file4.renrendoc.com/view/300239832a4d50ee0cc4be0568147a26/300239832a4d50ee0cc4be0568147a265.gif)
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
虚拟机床VirtualMachineTool天津大学机械工程学院OutlinesDemandsforModernMachinetoolsConceptsandDefinitionsVMTvs.ProductR&DModernMachineToolandItsRequirementsIntegrateddevelopmentofmodernmachinetoolswithvirtualprototypesKeysofVirtualMachineToolFunctionHighAccuracyHighEfficiencyDemandsforModernMachinetoolsLightweightofmovingcomponentsHighstaticanddynamicstiffnessVirtualPrototyping“VirtualPrototyping(VP)isarelativelynewtechnologywhichinvolvestheuseofVirtualReality(VR)andothercomputertechnologiestocreatedigitalprototypes.”—Gowda
etal.(MichiganStateUniversity)“Byvirtualprototyping,werefertotheprocessofsimulatingtheuser,theproduct,andtheircombined(physical)interactioninsoftwarethroughthedifferentstagesofproductdesign,andthequantitativeperformanceanalysisoftheproduct.”—Songetal.(UniversityofPennsylvania)ConceptsandDefinitionsVirtualPrototyping(cont-)“Inthemechanicalengineeringdefinitionofvirtualprototyping(VPME),theideaistoreplacephysicalmock-upsbysoftwareprototypes.Thisincludesalsoallkindsofgeometricalandfunctionalsimulations,whetherornotinvolvinghumans.”—AntoninoandZachmann(BMW)Digitalmock-up(DMU)Arealisticcomputersimulationofaproductwiththecapabilityofallrequiredfunctionsfromdesign/engineering,manufacturing,productservice,uptomaintenanceandproductrecycling.ConceptsandDefinitions(cont-)Prototypeafull-scalemodelofastructureorpieceofequipment,usedinevaluatingform,design,fit,andperformance.Mock-upascalemodel,oftenfull-size,ofastructure,apparatus,orvehicle;usedforstudy,training,ortestingandtodetermineiftheapparatuscanbemanufacturedeasilyandeconomically.”Prototype~Mock-up——TheAcademicPressDictionaryofScienceandTechnologyConceptsandDefinitions(cont-)“Virtualprototype,ordigitalmock-up,isacomputersimulationofaphysicalproductthatcanbepresented,analyzed,andtestedfromconcernedproductlife-cycleaspectssuchasdesign/engineering,manufacturing,service,andrecyclingasifonarealphysicalmodel.Theconstructionandtestingofavirtualprototypeiscalledvirtualprototyping(VP).”——G.GaryWang(UniversityofManitoba)ConceptsandDefinitions(cont-)VirtualMachineTool(VMT)VirtualPrototypingofMachiningtool
Thevirtualprototypeofamachinetoolisacomputersimulationmodelofthephysicalproductthatcanbepresented,analysedandtestedlikearealmachine.——C.Brecher(AachenUniversityofTechnology)ConceptsandDefinitions(cont-)VMTvs.ProductR&DModernMachineToolandItsRequirementsToensurethatthefirstphysicalprototypeofthemachinetoolmeetstherequirementsinthebestpossibleway,itisessentialthateverydesignstepisevaluatedwithsimulationsofthevirtualprototype.Integrateddevelopmentofmodernmachine
toolswithvirtualprototypes
KeysofVirtualMachineToolKinematicsstudieswithrigidmulti-bodysimulation(conceptdesign)Finite-Element-AnalysisandstructuraloptimizationCoupledflexibleMulti-Body-SimulationCalibrationoftheSimulationModelsOptimizationoftheSimulationModelsKinematicsStudiesMethod&ToolRigidmulti-bodysimulationOptimizationSteps&TasksDeterminationoftheappropriatekinematictopologyDeterminationoftherightgeometricdimensions——ApoortopologywhichisoptimallydesignedmayperformbetterthanamechanismwithappropriatetopologybutpoordesignKinematicsStudies(cont-)OptimizationofthekinematicperformanceKinematicsStudies(cont-)Rigidmulti-bodysimulationAssemblyanalysisKinematicanalysisu,v,
aDynamicanalysis-F
ma,
v,uInversedynamicanalysis-u,v,a
FStaticanalysis——analyzethekinematicbehavior,determineloadhistories,helpstochooseproperelementsordetectweakspotsofamachinetoolintheearlydesignstages.KinematicsStudies(cont-)Finite-Element-AnalysisandStructuralOptimizationStaticanalysisBeingusedtodeterminethedisplacements,stresses,strains,andforcesinstructuresorcomponentscausedbyloadsthatdonotinducesignificantinertiaanddampingeffects.Steadyloadandresponseconditionsareassumedinstaticanalysis;i.e.,theloadsandthestructure’sresponseareassumedtovaryslowlywithtime.Finite-Element-AnalysisandStructuralOptimization(cont-)DynamicanalysisAllowstheexaminationofastructurewithrespecttotime-varyingeffects.Formachinetoolsthemostimportantaspectistheanalysisofnormalmodedynamicstodeterminethevibrationcharacteristics(naturalfrequenciesandmodeshapes)ofastructureoramachinecomponentinthefrequencydomain,aswellasanalysisoftimedomainresponseofthemachineFinite-Element-AnalysisandStructuralOptimization(cont-)HeatanalysisTheinfluenceofheatsourcesonthemachine’sstructure.3primarymodesofheattransfer:conduction,convectionandradiationFinite-Element-AnalysisandStructuralOptimization(cont-)Finite-Element-AnalysisandStructuralOptimization(cont-)ResultsinaFinite-Element-AnalysisDeformations,e.g.deflectionofthetoolcentrepoint(TCP)underprocessloads,deflectionofguideways,reactionforces,e.g.forcesinbearingsorguidingsystemsLinearnormalmodesofvibrationFlexibilityfrequencyresponse(withlimitation)Stressdistribution,e.g.inhighlyloadedtoolinterfacesunderadditionalrotationalloadsTemperaturedistribution,thermalfluxesandresultingdeformationsFinite-Element-AnalysisandStructuralOptimization(cont-)OptimisationofstructuralcomponentsThetopologyoptimisation
isusedtodefinethebestmaterialdistributioninagivendesignspace.Thusthismethodismainlyusedintheearlydesignstagessupportingtheengineerinfindingadesignconceptwithregardtogivendemands.Theparameteroptimisation
isusedfortheoptimisationofmoredetaileddesignsofmachinetools,tooptimiseparametersofstructuralcomponentsconsideringdifferentconstraints,e.g.maximalalloweddeformation.Finite-Element-AnalysisandStructuralOptimization(cont-)Finite-Element-AnalysisandStructuralOptimization(cont-)Finite-Element-AnalysisandStructuralOptimization(cont-)Workflowofthecoupledhybridmulti-bodysimulationwithtopologyoptimisationFinite-Element-AnalysisandStructuralOptimization(cont-)ParameteroptimisationofamachiningcentreCoupledSimulationofStructuralDynamicsandControlLoopsofMachineToolsWhyCoupledSimulation?
——InteractionsbetweenstructuraldynamicsandfeeddrivecontrolsCoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)MethodsofcoupledsimulationofstructuraldynamicsandcontrolloopsCoupledrigidmulti-bodysimulationCoupledFinite-ElementsimulationCoupledflexiblemulti-bodysimulationCoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)CoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)Coupledsimulationofarigidmulti-bodymodelandcontrolloopmodelsofaPKMmachinetoolCoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)CoupledFEA-simulationwithcontrolloops(positionerrorsimulationofx-slideofaturningcentre)CoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)Integrationofstructuralandcontrollermodels——tooptimisethemachinetool’smechanicalcomponentsaswellasthecontrollawsCoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)Couplingofflexiblemulti-bodymodelsandcontrolloopsCoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)FlexibleMulti-BodySystemModelforcoupledsimulationCoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)CoupledSimulationofStructuralDynamicsandControlLoopsofMachineTools(cont-)Accuracyofthesimulatedresults?Correctestimationofthesimulationparameters?(dynamicstiffness&dampingparametersetc.)MeasurementsofthedynamicbehaviorofsimilarmachinetoolsorcomponentsComparethesimulationwithmeasurementandregulatethemodelparameters(stiffness-and
damping-coefficients)tomakethesimulationagreetothemeasurementsCalibrationofthe
simulation
modelsTheFrequencyResponseFunction(FRF)ofthecomplianceatthetoolcentrepoint(TCP)--frequen
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 学校社团工作计划鼓励学生写诗
- 2025年羧甲淀粉钠项目合作计划书
- 七年级下册《一元一次不等式的应用》课件与练习
- 制冷空调培训课件
- 强化废弃物管理推动生物降解
- 构建系统耦合度控制与优化机制
- 关于员工培训的会议纪要及培训计划
- 功能、使用与维护指南
- α-Lactose-hydrate-Standard-生命科学试剂-MCE
- Sodium-ethylparaben-Standard-生命科学试剂-MCE
- 双溪漂流可行性报告
- 采购流程各部门关系图
- 力士乐工程机械液压培训资料(共7篇)课件
- 英语单词词根
- 问题学生转化策略课件
- GMP附录计算机化系统整体及条款解读
- 村光伏发电申请书
- 腰椎间盘突出症中医特色疗法课件
- 施工现场专项消防安全检查表
- 如何当好学校的中层干部
- 2022-2023学年广东省佛山市顺德区高三(下)模拟英语试卷
评论
0/150
提交评论