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首页 大工13秋《工程力学(一)》在线作业3(Engineering mechanic…

大工13秋《工程力学(一)》在线作业3(Engineering mechanics work 13 autumn (a) online homework 3).doc

大工13秋《工程力学(一)》在线作业3(Eng…

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2018-10-03 0人阅读 举报 0 0 0 暂无简介

简介:本文档为《大工13秋《工程力学(一)》在线作业3(Engineering mechanics work 13 autumn (a) online homework 3)doc》,可适用于社会民生领域

大工秋《工程力学(一)》在线作业(Engineeringmechanicsworkautumn(a)onlinehomework)大工秋《工程力学(一)》在线作业(Engineeringmechanicsworkautumn(a)onlinehomework)Greatworksautumn"EngineeringMechanics()"onlinehomeworkTotalscore:testtime:testscores:SinglequestionjudgmentFirst,radioquestions(questions,points)Score:Vcutsabeamorsinglerigidknot,equivalenttoremoving(a)anexcessconstraintABCDThecorrectanswer:CFullScore:points:Inthespan,thesimplysupportedbeamattheendoftheconcentratedforceFistaken,andthemagnitudeoftheshearforceacrossthemiddlesectionofCis()AFBFCFDisuncertainThecorrectanswer:DFullScore:points:abouttheprincipleofvirtualworkofdeformablebodies,thefollowingstatementisincorrectAtheexternalforcesystemmustbeabalancedforcesystemBdisplacementmustsatisfytheconditionsofvirtualdisplacementCforceanddisplacementarerelatedbetweenthetwostatesDisapplicabletoanydeformablebodyofforcedeformationrelationThecorrectanswer:CFullScore:points:,themomentdistributionmethodisusedtocalculatethelateraldisplacementoftherigidframe,andthetransfercoefficientisequaltotheverticalsupportoftheuniformstraightrodABCDThecorrectanswer:DFullScore:points:thereasonableaxisofthethreehingedarchisundertheactionofradialuniformloadAarclineBparabolaCcatenaryDsinecurveThecorrectanswer:AFullScore:points:thefollowingoptionsdonotbelongtothepremiseofthemultiplicationofthegraphtocalculatethedisplacementTheAbarsectionisastraightrodwithequalsectionThephysicalparametersofeachrodsectionofBareconstantAtleastoneoftheintegrandofCisastraightlinefigureDtwointegrandarestraightlinesThecorrectanswer:DFullScore:points:whenthesupportofthestaticallydeterminatestructuremovesTheAmemberhasnodeformation,andthestructurehasnodisplacementTheBmemberhasnodeformation,andthestructurehasdisplacementTheCmemberhasdeformationandnodisplacementofthestructureTheDmemberhasdeformation,andthestructurehasdisplacementThecorrectanswer:BFullScore:points:Whenthesymmetricstructureactsagainsttheforce,thesheardiagramofthestructureis(),andthemomentdiagram()Asymmetry,antisymmetricBsymmetry,symmetryCantisymmetricsymmetryDantisymmetricandantisymmetricThecorrectanswer:AFullScore:points:Thebasicunknownquantityofthedisplacementmethodis()AsupportreactionBrodendbendingmomentCindependentnodedisplacementDredundantunknownsThecorrectanswer:CFullScore:points:ThecoefficientRJKinthecanonicalequationofthedisplacementmethodrepresentsthebasicsystemA,thedisplacementofthejnodedisplacementgeneratedintheKadditionalconstraintsinthereactionforceWhenthedisplacementoftheBKnodeisequaltotheunitdisplacement,thereactionforceintheKadditionalconstraintisgeneratedWhenthedisplacementoftheCKnodeisequaltotheunitdisplacement,thereactionforceinthejadditionalconstraintisgeneratedD,thedisplacementofthejnodedisplacementgeneratedinthejadditionalconstraintsinthereactionforceThecorrectanswer:CFullScore:points:Greatworksautumn"EngineeringMechanics()"onlinehomeworkTotalscore:testtime:testscores:SinglequestionjudgmentTwo,thejudgmentquestion(altogethertestquestions,altogetherpoints)Scoring:Vvirtualwork,thisconceptcanbeusednotonlyforrigidbodies,butalsofordeformablebodiesAerrorBcorrectThecorrectanswer:BFullScore:points:hasthebasicpartandthesubsidiarypart'sstructure,carriesontheforceanalysistheorderis:firstcalculatestheessentialpart,aftercalculatesthesubsidiarypartAerrorBcorrectThecorrectanswer:AFullScore:points:staticallydeterminatestructure,noload,nointernalforce,staticallyindeterminatestructure,noload,notnecessarilywithoutinternalforceAerrorBcorrectThecorrectanswer:BFullScore:points:thestaticallydeterminatestructurechangesthepropertiesofthematerialorchangestheshapeandsizeofthecrosssection,itwillnotchangeitsinternalforcedistribution,anditwillnotchangeitsdeformationanddisplacementAerrorBcorrectThecorrectanswer:AFullScore:points:Thetransientsystemcanmoveinstantaneouslyinitsoriginalposition,butitcannotcontinuetomoveintoageometricinvariantsystemafteraslightdisplacementoccursAerrorBcorrectThecorrectanswer:BFullScore:points:changesintheshapeofthestructuremustbeduetosomeexternalcausesofthestructurecausedbystressandstrainAerrorBcorrectThecorrectanswer:AFullScore:points:Therodisfreeofforce,soitisnotneededinthetrussandcanberemovedAerrorBcorrectThecorrectanswer:AFullScore:points:temperaturechangeswillcauseinternalforcesandsupportreactionsinstaticallyindeterminatestructuresAerrorBcorrectThecorrectanswer:BFullScore:points:ThephysicalmeaningofthetypicalequationofthedisplacementmethodistoreflectthedisplacementconditionoftheoriginalstructureAerrorBcorrectThecorrectanswer:AFullScore:points:checktheinternalforceofthestaticallyindeterminatestructure,aslongascheckingtheinternalforcediagramtosatisfythebalanceconditionAerrorBcorrectThecorrectanswer:AFullScore:points:

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