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ID:49463600
大小:3.55 MB
页数:29页
时间:2020-02-05
《工程力学英文版课件00 Introduction.ppt》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、IntroductionEngineeringMechanics1ResultantofConcurrentForcesinaPlaneWhyEngineeringMechanicsSuspensionbridge2ResultantofConcurrentForcesinaPlaneSteelcables3ResultantofConcurrentForcesinaPlaneBridgepier4ResultantofConcurrentForcesinaPlane5ResultantofConcurrentForcesinaPlane6ResultantofConcur
2、rentForcesinaPlane7ResultantofConcurrentForcesinaPlane8ResultantofConcurrentForcesinaPlaneFiniteelementmodellingofcarcrash9ResultantofConcurrentForcesinaPlane10ResultantofConcurrentForcesinaPlane11ResultantofConcurrentForcesinaPlane12ResultantofConcurrentForcesinaPlaneGears13ResultantofCon
3、currentForcesinaPlaneArtificialbone14ResultantofConcurrentForcesinaPlaneIntroductionMechanicscanbedefinedasthatbranchofthephysicalsciencesconcernedwiththestateofrestormotionofbodiesthataresubjectedtotheactionofforces.Thissemester,twoveryimportantbranchesofmechanics,namely,staticsandmechani
4、csofmaterialswillbestudied.15ResultantofConcurrentForcesinaPlaneStatics:Thesubjectdealswiththeequilibriumofrigidbodies,thatis,itisusedtodeterminetheforcesactingeitherexternaltothebodyorwithinitnecessarytokeepthebodyeitheratrestormovingwithaconstantvelocity.Thegeneralproblemofstaticsconsist
5、sinreducingagivensystemofforcestoitssimplestequivalent,i.e.,toitsresultant.16ResultantofConcurrentForcesinaPlaneMechanicsofmaterials:Thesubjectstudiestherelationshipsbetweentheexternalloadsandtheintensityofinternalforcesactingwithinthebody.Thissubjectisalsoconcernedwithcomputingthedeformat
6、ionsofthebody,anditprovidesastudyofthebody’sstabilitywhenthebodyissubjectedtoexternalforces.17ResultantofConcurrentForcesinaPlaneStrength:Capacityofacomponentorastructuralelementtoresistfailure.Rigidity(Stiffness):Capacityofacomponentorastructuralelementtoresistdeformation.Stability:Capaci
7、tyofacomponentorastructuralelementtoretaintheoriginalstateofequilibrium.18ResultantofConcurrentForcesinaPlaneUndertherequirementthatthestrength,rigidity,stabilitycriteriaaresatisfied,providethenecessaryfundamentaltheoryandmethodofcalculationfordeterminingreaso
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