【MOOC】Foundations of Solid Mechanics-东南大学 中国大学慕课MOOC答案

【MOOC】FoundationsofSolidMechanics-东南大学中国大学慕课MOOC答案QuizforChapter11、【单选题】Inthehistoryofsolidmechanics,whofirstpointedoutthatabodyisdeformedsubjecttotheactionofaforce?本题答案：【RobertHooke】2、【多选题】Hassolidmechanicsfounditsapplicationsinwhichofthefollowingengineeringareas?本题答案：【Aeronauticalandaerospaceengineering#Mechanicalengineering#Materialsscienceandengineering#Civilengineering】3、【判断题】Inthehistoryofsolidmechanics,SirLordKelvinfirstdemonstratedthattorsionalmomentsactingattheedgesofplatescouldbedecomposedintoshearingforces.本题答案：【正确】4、【填空题】Elasticityanalysisisprimarilyconcernedwiththedeterminationofstress,strainand()inelasticsolids.本题答案：【displacement##%_YZPRLFH_%##displacements】QuizforChapter21、【单选题】Inindicialnotation,noindexcanappearmorethan()timesinasinglealgebraicterm.本题答案：【2】2、【多选题】Examplesofscalarsinclude本题答案：【densityofmaterials#mass#temperature】3、【多选题】Howmuchisthedeterminantofthetransformationmatrixbetweendifferentcoordinatesystems?本题答案：【1#-1】4、【判断题】Thosevectorsandmatricesthatsatisfythetransformationrulesbetweencoordinatesarecalledtensors.本题答案：【正确】5、【判断题】Wecanwrite本题答案：【错误】6、【填空题】Inordertofurthersimplifymathematicalexpressions,()firstintroducedthesummationconvention.本题答案：【Einstein】QuizforChapter31、【单选题】Forthegnenralthreeprincipalstresses,whichofthefollowingrelationiscorrect?本题答案：【】2、【单选题】Whichofthefollowingmodeisnonlinear?本题答案：【Shearduetotransverseload】3、【多选题】WhatarebasicdeformationmodesinMechanicsofMaterials?本题答案：【Simplebeambending#Shearduetotransverseload#Simpletension#Simpletorsion】4、【多选题】Forageneralstressstate,whichofthefollowingrelationsarecorrect?本题答案：【##】5、【判断题】Fromthenormalstressformulaequationinpurebendingcase,thelargestnormalstresswillbeeitheronthetoporonthebottomofthebeamonthecrosssection,wherethemomentislargest.本题答案：【正确】6、【判断题】ThesethreeI1I2andI3inthecharacteristiccubicequationwillbechangingwiththecoordinatetransformation.本题答案：【错误】7、【填空题】Forprinciplestressstates,wedonothave()component.本题答案：【shearstress】8、【填空题】Bystresswemeantheintensityof()force.本题答案：【aninternal##%_YZPRLFH_%##internal】QuizforChapter41、【单选题】Whichofthefollowingmaterialconstnatisnotphysicallyinterpretable?本题答案：【Lameconstant】2、【单选题】Whichofthefollowingstatementisnotcorrecttodescribeahomogeneousmaterial?本题答案：【Itcancontainsomediscontinuity.】3、【多选题】Whichofthefollowingmaterialsaretypicallyanisotropic?本题答案：【Composites#Woods#Aggregates#Bones】4、【多选题】Foranisotropicelasticmaterial,whichofthefollowingrelationsarecorrect?本题答案：【##】5、【判断题】Thehomogenousmaterialcanbeanisotropic.本题答案：【正确】6、【判断题】Theelasticmaterialsalwaysbehavelinearly.本题答案：【错误】7、【填空题】Weonlyhavetodealwith()materialconstantsforisotropicmaterials.本题答案：【two##%_YZPRLFH_%##2】8、【填空题】Inlinearmaterials,thestressandstrainwillbe()toeachother.本题答案：【proportional】QuizforChapter51、【单选题】Forpuretensionwithbeingtheonlynonzeroterm,whichofthefollowingcomponentfordeviatoricstressisnotcorrect?本题答案：【】2、【单选题】Whichofthefollowingstatementisnotcorrectinthegeneralcase?本题答案：【】3、【多选题】Wecanhavethegeneralstressstatedecompositionas本题答案：【hydrostaticstressstate#deviatoricstressstate】4、【多选题】Whichofthefollowingcorrespondingstrainenergydensitiescontainonlyoneterm?本题答案：【Uniaxialstressstate#Pureshearstate】5、【判断题】Thestrainenergywillbeworkdonebyinternalforces.本题答案：【正确】6、【判断题】Thedeviatoricstressstateisresponsibleforthevolumechange.本题答案：【错误】7、【填空题】Bydefinition{}issimplystrainenergyperunitvolume.本题答案：【thestrainenergydensity##%_YZPRLFH_%##strainenergydensity】8、【填空题】{}representsthepartoftheenergythatiscomplementarytothestrainenergy本题答案：【complementaryenergy##%_YZPRLFH_%##Complementaryenergy】QuizforChapter61、【单选题】Whichofthefollowingtypesofboundaryconditionsisnotcorrect?本题答案：【Bothatractionandadisplacementcomponentsareprescribedineachdirection.】2、【单选题】For2Dcase,wewillhave()constitutiveequations.本题答案：【three】3、【多选题】Wewillhavetouse(),andtheboundaryconditionsEq.(5)fortypicalstressformulationmethod.本题答案：【Equilibrium#Constitutive#Compatibility】4、【多选题】Forthedisplacementformulationmethod,weneedtouse().本题答案：【Equationsofmotion#Geometrical#Hooke'slaw】5、【判断题】Inthemechanicsofmaterials,wealwaysassumesomekinematicrelationsdealingwithsomeassumeddeformationmodes.本题答案：【正确】6、【判断题】Forplanestressstate,alloutofplanestresscomponentsareidenticallyzero.本题答案：【正确】7、【填空题】Inplanestrainstate,alloutofplane()componentsareidenticallyzero.本题答案：【strain】8、【填空题】Thereareonlytwotypesofforces.Oneiscontactorsurfaceforces,anotheriscalledthe()force.本题答案：【body】QuizforChapter71、【单选题】HowmanytimesdidweapplyGreen'stheoryindevelopingAiry'sstressfunction?本题答案：【3】2、【多选题】WhichofthefollowingequationscanbetreatedasthedefiningequationsoftheAiry'sstressfunction?本题答案：【###】3、【判断题】TheinversemeanswearegiventheAiry’sstressfunction.本题答案：【正确】4、【判断题】Weareabletoobtainthreestresscomponentsbyusingonescalervaluedpotentialfunction.本题答案：【正确】5、【填空题】Inparticular,ifnobodyforcesandtemperaturechange,thedefiningequationforpotentialfunctionbecomesthe()potentialfunctionequalszero.本题答案：【biharmonic】6、【填空题】Thestresscomponentsinboththeplanestrainandplanestressdeformationswithout()andtemperaturesareindependentofthematerialconstants.本题答案：【bodyforces##%_YZPRLFH_%##bodyforce】QuizforChapter81、【单选题】Thestressconcentrationfactorisdefinedtobe本题答案：【maximumnormalstressoverthefarfiledstress】2、【多选题】Forsolvingaprobelmwithcirculardomain,whichofthefollowingthingswemightuse?本题答案：【Polarcoordinatesystem#Superpositionprinciple#Tractionstressrelations#Airy'sstressfunction】3、【判断题】ThedefiningequationinAiry'sstressfunctionisaninvariantform.本题答案：【正确】4、【填空题】Thestressconcentrationisa()phenomenon.本题答案：【local】QuizforChapter91、【单选题】Whichofthefollowingdescriptionsisnotcorrect?本题答案：【Thefatiguelifeinthelowcyclefatigueislong.】2、【单选题】FormaterialswithoutthehorizontalportionintheS-Ncurve,weoftensetoneenoughlargenumbertobethelimit,asNequals本题答案：【】3、【多选题】Whichofthefollowingcriterioncanbeapplyforductilematerial?本题答案：【Trescacriterion#VonMisescriterion#Octahedralshearstresscriterion】4、【多选题】Fatiguehasthefollowingfeatures:本题答案：【Itnormallyoccursinrotatingmachineparts#Itoftenstartsfromsurfacedefects#Itisofteninfluencedbyfactorseludingrecognition#Itusuallyresultsinbrittlefracture】5、【判断题】Ifthereisanobservablecrack,wecanstillusefailurecriteria.本题答案：【错误】6、【判断题】Themaximumnormalstresscriterionisnotgoingtobeaccurateforhydrostaticcompression.本题答案：【正确】7、【填空题】Inthemostgeneralcase,wecandividethefailurecriteriaintotwobigparts.Onefor()criteria,andmostlyforductilematerials,likemetals.本题答案：【yielding】8、【填空题】Inthemostgeneralcase,wecandividethefailurecriteriaintotwobigparts.Onefor()criteria,whichforbrittlematerials,likeglass,ceramicandsomepolymer.本题答案：【fracture】QuizforChapter101、【单选题】Whichofthefollowingstatementsisnotcorrectforshearcenter?本题答案：【Thelocationoftheshearcenterisdependentofthedirectionandmagnitudeofthetransverseforces】2、【单选题】Whichofthefollowingstatementsisnotcorrectforcurvedbeams?本题答案：【Theinfluenceoftransverseshearonbeamdeformationmustbetakenintoaccount】3、【多选题】Whichofthefollowingstatementsarecorrectforsymmetricbending?本题答案：【Allthetransverseloadsactingonasymmetryplane#Theresultantmomentalwaysparalleltotheneutralaxis#Thelateraldeflectionisperpendiculartotheneutralaxis,andparalleltotheloadingplane#Stresscomponentsforsymmetricbendingcanbeobtainedfrommechanicsofmaterialsapproach】4、【多选题】Whichofthefollowingstatementsarecorrectforunsymmetricbending?本题答案：【Itdoesn’trequiresuchasymmetryplanefortheloads#Theresultantmomentisnolongerparalleltotheneutralaxis#Thelateraldeflectionisperpendiculartotheneutralaxis#Theresultantmomentisperpendiculartotheloadingplane】5、【判断题】Wecanchooseanyplanecoordinatesintheunderunsymmetricbending,unlesstheyarerequiredtobecentroidalaxis.本题答案：【正确】6、【判断题】Whentheforcedoesnotactthroughtheshearcenter,inadditiontobending,atwistingactionresults.本题答案：【正确】7、【填空题】Weassumethatthereisonly()inthecurrentunsymmetricbeam.本题答案：【bending】8、【填空题】Acurvedbarorbeamisastructuralelementforwhichthelocusofthecentroidsofthecrosssectionsisacurvedline()deformation.本题答案：【before】QuizforChapter111、【单选题】InPrandtlstressfunctionmethod,thestressinabarofarbitrarysectionmaythusbedeterminedbysolving()alongwiththegivenboundaryconditions.本题答案：【】2、【多选题】Intreatingnon-circularprismaticbars,whichofthefollowingstatementsarecorrect?本题答案：【Theshearstressesaretreatedtobezeroatcorners#Theshearstressesvariesalongthesamecontouronthesamecross-section#Weneedtodevelopnewtheoriesthatcanaccountforwarpingofthecrosssection.】3、【判断题】Intreatingnon-circularprismaticbars,crosssectionsinitiallyplaneexperienceout-of-planedeformationorwarping,andthebasickinematicassumptionsoftheelementarytheoryareappropriate.本题答案：【错误】4、【判断题】Inmechanicsofmaterials,theshearstrainvarieslinearlyfromzeroatthecentertoamaximumontheoutersurfaceforcircularcrosssections.本题答案：【正确】5、【填空题】InPrandtlstressfunctionmethod,thestressfunctionis()onthelateralsurface.本题答案：【constant##%_YZPRLFH_%##aconstant##%_YZPRLFH_%##zero##%_YZPRLFH_%##0】QuizforChapter121、【单选题】Theprincipleofminimumtotalpotentialenergyisdefinedby本题答案：【】2、【单选题】Whichofthefollowingrelationsisnotcorrectfromthestrainenergy?本题答案：【】3、【多选题】Thefeaturesofenergymethods:本题答案：【Theyinvolveonlyscalerquantities,su