用mDesign计算螺栓的一个实例

INFOMASS-ENGINEEREDTOFINDYOURSOLUTION数字化工程平台Information-Calculation-Proof–Documentation全程服务By:张晓天[e-mail]：192768442020年3月7日INFOMASS-ENGINEEREDTOFINDYOURSOLUTIONAboutusco-operation/membershipINFOMASS-ENGINEEREDTOFINDYOURSOLUTION总览MDESIGNMDESIGNdimension,optimizeanddocumentindesignanddevelopmentMDESIGNmechanicaldesignanddocumentationofmachineelementsMDESIGNauthorstandardizationofcompany-ownedknowledgeMDESIGNexploreruserinterfaceforexternalandinternalknow-howaccesstoformularyanddatabasesMDESIGNgearboxdesignlayoutofmulti-stagespurandplanetarygearsMDESIGNmultiboltcalculationofmultipleboltsaccordingtoVDI2230Blatt2MDESIGNshaftcalculationaccordingtoDIN743MDESIGNboltcalculationaccordingtoVDI2230MDESIGNespressocalculationofpressurevesselsaccordingtoAD/ENMDESIGNLVR/LVRplanetcalculationofloaddistributionforplanetaryandspurgearsINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGN的应用领域AudiBMWDaimlerIVECOMANOpelPorscheVolkswagenautomotiveDt.BahnBombardierSiemensTransportationStadlerThyssenKruppGHHRadsatzWindhoffBahntechnikTraktionssystemeAustriaRobelBahnmaschinenbaurailwayAstriumEADSEurocopterDLRLFKMTUAeroEnginesDiehlAvonikRecaroAircraftSeatingaerospaceRobertBoschBoschMahleTurboSystemsBoschRexrothContitechhofermechatronicsKnorr-BremseKWDKupplungswerkO&KAntriebstechnikSchaeffler(INF,FAG,LUK)PierburgGetragFordGKNSGLBrakesSvendborgBrakesThyssenKruppBilstein/PrestaWABCOZFSupplyindustryBOMAGFAMLiebherrClassACGOFendtSameDeutzJohnDeereCrownJungheinrichStillagriculturalandconstructionmaschineryKrauss-MaffeiKässbohrerRheinmetallZöller-KipperMeiller-KipperFaunspecificvehiclesAREVAE.ONEvonikEnerconNordexREPowerRWEPowerSkysailsVattenfallenergyandwindRENKSEWEurodrivesStromagVoithTurboSumitomoPintschBubenzerDeutzMANDieseldrivetechnologyINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGN的应用领域industry:morethan30.000Anwenderconveyortechnologyautomationplantengineeringengineeringserviceprovidertestinginstitutespartner:teaching:universitiesschoolstraininginstitutesabout2.000studentlicensesp.a.INFOMASS-ENGINEEREDTOFINDYOURSOLUTION国内的设计现状：过度设计---超重，成本高不足设计---服役能力差，灾难性损失VDI2230标准：德国工程师协会标准设计螺栓尺寸，强度（结合有限元分析）防止过早失效或过度设计MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTION基于VDI2230的设计计算偏心负载自定义螺栓几何尺寸空心螺栓高达五层被连接件的张力计算对于在较高温度下服役螺栓的设计计算。MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONVDI2230附录实例1初始条件•尺寸：Lg=60mm，DSt=25mmL=55mm，DZ=80mm•液压缸内压力pmax=5.5N/mm2•承压面积A=4536mm•轴向载荷FAmax=24.9kN•活塞每小时300个工作冲程•密封要求：FKRmin=103N•活塞材料：16MnCr5•活塞杆材料：C45•表面粗糙度RZ=16µm•连接工具指示扭矩的扳手MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTION标准计算步骤：•R0初步确定螺栓公称直径，核算其适用范围查表A7，初选用ISO4762-M12*60-12.9.•R1扭紧系数查表A8，αA=1.7•R2最小夹紧力给定1,000N•R3工作载荷、弹性柔度、弹性回复和载荷导出系数螺栓的弹性柔度δS=δSK+δ1+δGew+δGM被连接件的弹性柔度δp•R4因压陷产生的预紧力损失量FZ=2415N•R5最小装配预紧力FMmin=28116N•R6最大装配预紧力FMmax=47797N•R7装配应力改进为DINENISO4762-M12*60-10.9•R8工作应力FSmax，σzmax，τmax，σred,B,SF1.0MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTION标准计算步骤：•R9变应力σa=1.2N/mm2σASV=48.9N/mm2疲劳极限•R10表面压强APmin,pMmax16MnCr材料极限pG，Sp=1.25•R11最小拧入深度mvorheff=15.5mmmeff=0.9*d=10.8mm•R12抵抗滑动的安全限度•R13扭紧力矩查表A1，MA=108NmMDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTION标准计算步骤：MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTION标准计算步骤：MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGN计算演示：•1草图设计•1.1参数输入MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGN计算演示：•1草图设计•1.2强度等级选择•1.3螺栓选择MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGN计算演示：•1草图设计•1.4得到初选结果MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGN计算演示：•2验证计算•2.1输入工况参数MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGN计算演示：•2验证计算•2.2得到结果报告Results:SystematiccalculationofhighdutyboltedjointsaccordingtoVDI2230HexagonheadboltDINENISO4014-M12x60-12.9GeneralcalculationvaluesBoltgeometryElasticresilienciesofthejointWorkingstressAlternatingstressSurfacepressureWorkingstateMinimumlengthofengagementTighteningtorqueMDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTION两种计算的对比：传统标准设计MDESIGN设计时间效率慢，步骤繁琐，需要查阅大量的图标，标准和计算公式。快，只需确定简单的输入参数即可。计算结果人工计算，难免有差错，核实计算结果也需要大量时间。自动计算，自动给出计算结果，自动分析，为设计师提供优化意见及帮助，还能自动生成图像模型，图表结果。参数分析需要大量的时间来进行大量的计算分析，而且准确性差。自动分析，准确性高，参数分析结果直接明了，便于设计师更好的理解各个参数对设计结果的影响。MDESIGNBoltINFOMASS-ENGINEEREDTOFINDYOURSOLUTION考虑了空心轴和锥形轴段临界转速的计算综合的图形演示结果报告扩展到50个轴段的计算可自定义槽口MDESIGNShaftINFOMASS-ENGINEEREDTOFINDYOURSOLUTION计算过程计算结果MDESIGNShaftINFOMASS-ENGINEEREDTOFINDYOURSOLUTION轴承计算CalculatesrollerbearinglifeexpectancyaccordingtoISO281MDESIGNShaftINFOMASS-ENGINEEREDTOFINDYOURSOLUTIONMDESIGNShaftINFOMASS-ENGINEEREDTOFINDYOURSOLUTION•齿轮啮合分析，修形优化充分考虑了齿轮真实的啮合情况，比如轴的弯曲，轴承的油隙，轴系的布置等等。基于有限元理论，准确模拟齿轮间的接触情况，做到精确设计。MDESIGNLVR/LVRPlanetINFOMASS-ENGINEEREDTOFINDYOURSOLUTION主减速装置:这一对齿轮传动比达到6以上，主轴上受到多个附加载荷，而且载荷非常大，直接影响到轴的变形和齿轮啮合。通过参数输入，建立模型。MDESIGNLVR/LVRPlanetINFOMASS-ENGINEEREDTOFINDYOURSOLUTION啮合计算分析一般要通过接触应力分布图、传递误差，振动频谱，轴弯曲状态等等来评价齿轮啮合的质量。MDESIGNLVR/LVRPlanetINFOMASS-ENGINEEREDTOFINDYOURSOLUTION修形前的接触分布图，载荷分布系数为1.216。在进行齿顶修形和齿向修形后，载荷分布系数减小为1.115齿形方向载荷过渡平稳，齿向方向经过鼓形修齿后，偏载大大减轻。MDESIGNLVR/LVRPlanetINFOMASS-ENGINEEREDTOFINDYOURSOLUTION快捷地，有效地设计和验证多级齿轮和行星齿轮箱。用户可直观的看到齿轮分布，并可重新计算优化。在给定优化目标后进行自动计算，例如：质量，体积，惯性等，并很快得到新的解