MOOC Foundations of Solid Mechanics-東南大學(xué) 中國(guó)大學(xué)慕課答案

MOOCFoundationsofSolidMechanics-東南大學(xué)中國(guó)大學(xué)慕課答案QuizforChapter11、問(wèn)題：Inthehistoryofsolidmechanics,whofirstpointedoutthatabodyisdeformedsubjecttotheactionofaforce?選項(xiàng)：A、RobertHookeB、IsaacNewtonC、LeonardEulerD、Joseph-LouisLagrange正確答案:【RobertHooke】2、問(wèn)題：Hassolidmechanicsfounditsapplicationsinwhichofthefollowingengineeringareas?選項(xiàng)：A、AeronauticalandaerospaceengineeringB、MechanicalengineeringC、MaterialsscienceandengineeringD、Civilengineering正確答案:【Aeronauticalandaerospaceengineering#Mechanicalengineering#Materialsscienceandengineering#Civilengineering】3、問(wèn)題：Inthehistoryofsolidmechanics,SirLordKelvinfirstdemonstratedthattorsionalmomentsactingattheedgesofplatescouldbedecomposedintoshearingforces.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】4、填空題：Elasticityanalysisisprimarilyconcernedwiththedeterminationofstress,strainand()inelasticsolids.正確答案:【displacement##%_YZPRLFH_%##displacements】QuizforChapter21、問(wèn)題：Inindicialnotation,noindexcanappearmorethan()timesinasinglealgebraicterm.選項(xiàng)：A、1B、2C、3D、4正確答案:【2】2、問(wèn)題：Examplesofscalarsinclude選項(xiàng)：A、densityofmaterialsB、massC、temperatureD、force正確答案:【densityofmaterials#mass#temperature】3、問(wèn)題：Howmuchisthedeterminantofthetransformationmatrixbetweendifferentcoordinatesystems?選項(xiàng)：A、0B、1C、-1D、2正確答案:【1#-1】4、問(wèn)題：Thosevectorsandmatricesthatsatisfythetransformationrulesbetweencoordinatesarecalledtensors.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】5、問(wèn)題：Wecanwrite選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【錯(cuò)誤】6、填空題：Inordertofurthersimplifymathematicalexpressions,()firstintroducedthesummationconvention.正確答案:【Einstein】QuizforChapter31、問(wèn)題：Forthegnenralthreeprincipalstresses,whichofthefollowingrelationiscorrect?選項(xiàng)：A、B、C、D、正確答案:【】2、問(wèn)題：Whichofthefollowingmodeisnonlinear?選項(xiàng)：A、SimplecompressionB、SimpletorsionC、SimplebeambendingD、Shearduetotransverseload正確答案:【Shearduetotransverseload】3、問(wèn)題：WhatarebasicdeformationmodesinMechanicsofMaterials?選項(xiàng)：A、SimplebeambendingB、ShearduetotransverseloadC、SimpletensionD、Simpletorsion正確答案:【Simplebeambending#Shearduetotransverseload#Simpletension#Simpletorsion】4、問(wèn)題：Forageneralstressstate,whichofthefollowingrelationsarecorrect?選項(xiàng)：A、B、C、D、正確答案:【##】5、問(wèn)題：Fromthenormalstressformulaequationinpurebendingcase,thelargestnormalstresswillbeeitheronthetoporonthebottomofthebeamonthecrosssection,wherethemomentislargest.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】6、問(wèn)題：ThesethreeI1I2andI3inthecharacteristiccubicequationwillbechangingwiththecoordinatetransformation.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【錯(cuò)誤】7、填空題：Forprinciplestressstates,wedonothave()component.正確答案:【shearstress】8、填空題：Bystresswemeantheintensityof()force.正確答案:【aninternal##%_YZPRLFH_%##internal】QuizforChapter41、問(wèn)題：Whichofthefollowingmaterialconstnatisnotphysicallyinterpretable?選項(xiàng)：A、LameconstantB、LameconstantC、Poisson’sratiovD、ShearmodulusG正確答案:【Lameconstant】2、問(wèn)題：Whichofthefollowingstatementisnotcorrecttodescribeahomogeneousmaterial?選項(xiàng)：A、Materialpropertiesareidenticalateverypointinthebody.B、Itcontainsnovoids,cracksandinclusions.C、Itcanbeisotropic.D、Itcancontainsomediscontinuity.正確答案:【Itcancontainsomediscontinuity.】3、問(wèn)題：Whichofthefollowingmaterialsaretypicallyanisotropic?選項(xiàng)：A、CompositesB、WoodsC、AggregatesD、Bones正確答案:【Composites#Woods#Aggregates#Bones】4、問(wèn)題：Foranisotropicelasticmaterial,whichofthefollowingrelationsarecorrect?選項(xiàng)：A、B、C、D、正確答案:【##】5、問(wèn)題：Thehomogenousmaterialcanbeanisotropic.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】6、問(wèn)題：Theelasticmaterialsalwaysbehavelinearly.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【錯(cuò)誤】7、填空題：Weonlyhavetodealwith()materialconstantsforisotropicmaterials.正確答案:【two##%_YZPRLFH_%##2】8、填空題：Inlinearmaterials,thestressandstrainwillbe()toeachother.正確答案:【proportional】QuizforChapter51、問(wèn)題：Forpuretensionwithbeingtheonlynonzeroterm,whichofthefollowingcomponentfordeviatoricstressisnotcorrect?選項(xiàng)：A、B、C、D、正確答案:【】2、問(wèn)題：Whichofthefollowingstatementisnotcorrectinthegeneralcase?選項(xiàng)：A、B、C、D、正確答案:【】3、問(wèn)題：Wecanhavethegeneralstressstatedecompositionas選項(xiàng)：A、hydrostaticstressstateB、deviatoricstressstateC、octahedralstressstateD、VonMisesstressstate正確答案:【hydrostaticstressstate#deviatoricstressstate】4、問(wèn)題：Whichofthefollowingcorrespondingstrainenergydensitiescontainonlyoneterm?選項(xiàng)：A、UniaxialstressstateB、PureshearstateC、PlanestressstateD、Generalstressstate正確答案:【Uniaxialstressstate#Pureshearstate】5、問(wèn)題：Thestrainenergywillbeworkdonebyinternalforces.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】6、問(wèn)題：Thedeviatoricstressstateisresponsibleforthevolumechange.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【錯(cuò)誤】7、填空題：Bydefinition{}issimplystrainenergyperunitvolume.正確答案:【thestrainenergydensity##%_YZPRLFH_%##strainenergydensity】8、填空題：{}representsthepartoftheenergythatiscomplementarytothestrainenergy正確答案:【complementaryenergy##%_YZPRLFH_%##Complementaryenergy】QuizforChapter61、問(wèn)題：Whichofthefollowingtypesofboundaryconditionsisnotcorrect?選項(xiàng)：A、TractionB、DsiplacementC、Eitheratractionoradisplacementcomponentisprescribedineachdirection.D、Bothatractionandadisplacementcomponentsareprescribedineachdirection.正確答案:【Bothatractionandadisplacementcomponentsareprescribedineachdirection.】2、問(wèn)題：For2Dcase,wewillhave()constitutiveequations.選項(xiàng)：A、oneB、twoC、threeD、six正確答案:【three】3、問(wèn)題：Wewillhavetouse(),andtheboundaryconditionsEq.(5)fortypicalstressformulationmethod.選項(xiàng)：A、EquilibriumB、ConstitutiveC、GeometricalD、Compatibility正確答案:【Equilibrium#Constitutive#Compatibility】4、問(wèn)題：Forthedisplacementformulationmethod,weneedtouse().選項(xiàng)：A、EquationsofmotionB、GeometricalC、Hooke'slawD、Compatibility正確答案:【Equationsofmotion#Geometrical#Hooke'slaw】5、問(wèn)題：Inthemechanicsofmaterials,wealwaysassumesomekinematicrelationsdealingwithsomeassumeddeformationmodes.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】6、問(wèn)題：Forplanestressstate,alloutofplanestresscomponentsareidenticallyzero.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】7、填空題：Inplanestrainstate,alloutofplane()componentsareidenticallyzero.正確答案:【strain】8、填空題：Thereareonlytwotypesofforces.Oneiscontactorsurfaceforces,anotheriscalledthe()force.正確答案:【body】QuizforChapter71、問(wèn)題：HowmanytimesdidweapplyGreen'stheoryindevelopingAiry'sstressfunction?選項(xiàng)：A、1B、2C、3D、4正確答案:【3】2、問(wèn)題：WhichofthefollowingequationscanbetreatedasthedefiningequationsoftheAiry'sstressfunction?選項(xiàng)：A、B、C、D、正確答案:【###】3、問(wèn)題：TheinversemeanswearegiventheAiry’sstressfunction.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】4、問(wèn)題：Weareabletoobtainthreestresscomponentsbyusingonescalervaluedpotentialfunction.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】5、填空題：Inparticular,ifnobodyforcesandtemperaturechange,thedefiningequationforpotentialfunctionbecomesthe()potentialfunctionequalszero.正確答案:【biharmonic】6、填空題：Thestresscomponentsinboththeplanestrainandplanestressdeformationswithout()andtemperaturesareindependentofthematerialconstants.正確答案:【bodyforces##%_YZPRLFH_%##bodyforce】QuizforChapter81、問(wèn)題：Thestressconcentrationfactorisdefinedtobe選項(xiàng)：A、maximumnormalstressoverthefarfiledstressB、maximumshearstressoverthefarfiledstressC、minimumnormalstressoverthefarfiledstressD、minimumshearstressoverthefarfiledstress正確答案:【maximumnormalstressoverthefarfiledstress】2、問(wèn)題：Forsolvingaprobelmwithcirculardomain,whichofthefollowingthingswemightuse?選項(xiàng)：A、PolarcoordinatesystemB、SuperpositionprincipleC、TractionstressrelationsD、Airy'sstressfunction正確答案:【Polarcoordinatesystem#Superpositionprinciple#Tractionstressrelations#Airy'sstressfunction】3、問(wèn)題：ThedefiningequationinAiry'sstressfunctionisaninvariantform.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】4、填空題：Thestressconcentrationisa()phenomenon.正確答案:【local】QuizforChapter91、問(wèn)題：Whichofthefollowingdescriptionsisnotcorrect?選項(xiàng)：A、Thefatiguecanbedividedintotwogroups.B、Thehighcyclefatigueissubjectedtoelasticdeformationbasedandthestresslevelisverylow.C、Thelowcyclefatigueisplasticdeformationdominated.D、Thefatiguelifeinthelowcyclefatigueislong.正確答案:【Thefatiguelifeinthelowcyclefatigueislong.】2、問(wèn)題：FormaterialswithoutthehorizontalportionintheS-Ncurve,weoftensetoneenoughlargenumbertobethelimit,asNequals選項(xiàng)：A、B、C、D、正確答案:【】3、問(wèn)題：Whichofthefollowingcriterioncanbeapplyforductilematerial?選項(xiàng)：A、TrescacriterionB、MaximumnormalstresscriterionC、VonMisescriterionD、Octahedralshearstresscriterion正確答案:【Trescacriterion#VonMisescriterion#Octahedralshearstresscriterion】4、問(wèn)題：Fatiguehasthefollowingfeatures:選項(xiàng)：A、ItnormallyoccursinrotatingmachinepartsB、ItoftenstartsfromsurfacedefectsC、ItisofteninfluencedbyfactorseludingrecognitionD、Itusuallyresultsinbrittlefracture正確答案:【Itnormallyoccursinrotatingmachineparts#Itoftenstartsfromsurfacedefects#Itisofteninfluencedbyfactorseludingrecognition#Itusuallyresultsinbrittlefracture】5、問(wèn)題：Ifthereisanobservablecrack,wecanstillusefailurecriteria.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【錯(cuò)誤】6、問(wèn)題：Themaximumnormalstresscriterionisnotgoingtobeaccurateforhydrostaticcompression.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】7、填空題：Inthemostgeneralcase,wecandividethefailurecriteriaintotwobigparts.Onefor()criteria,andmostlyforductilematerials,likemetals.正確答案:【yielding】8、填空題：Inthemostgeneralcase,wecandividethefailurecriteriaintotwobigparts.Onefor()criteria,whichforbrittlematerials,likeglass,ceramicandsomepolymer.正確答案:【fracture】QuizforChapter101、問(wèn)題：Whichofthefollowingstatementsisnotcorrectforshearcenter?選項(xiàng)：A、Thelocationoftheshearcenterisveryimportantforathin-walledopencross-sectionB、TheshearcenterofanopencrosssectioncanbefarawayfromcentroidC、Ifdistortionofthecrosssectioninitsownplaneduetobendingofthebeamisneglected,theshearcentercoincideswiththecenteroftwistD、Thelocationoftheshearcenterisdependentofthedirectionandmagnitudeofthetransverseforces正確答案:【Thelocationoftheshearcenterisdependentofthedirectionandmagnitudeofthetransverseforces】2、問(wèn)題：Whichofthefollowingstatementsisnotcorrectforcurvedbeams?選項(xiàng)：A、AllcrosssectionspossessaverticalaxisofsymmetrylyingintheplaneofthecentroidalaxisB、SectionsoriginallyplaneandperpendiculartothecentroidalbeamaxisremainsosubsequenttobendingC、Thecurvedbeamisasolidofrevolution,withitsaxis,innerandoutersurfacesbeingcirculararcsabouttheaxisofrevolutionD、Theinfluenceoftransverseshearonbeamdeformationmustbetakenintoaccount正確答案:【Theinfluenceoftransverseshearonbeamdeformationmustbetakenintoaccount】3、問(wèn)題：Whichofthefollowingstatementsarecorrectforsymmetricbending?選項(xiàng)：A、AllthetransverseloadsactingonasymmetryplaneB、TheresultantmomentalwaysparalleltotheneutralaxisC、Thelateraldeflectionisperpendiculartotheneutralaxis,andparalleltotheloadingplaneD、Stresscomponentsforsymmetricbendingcanbeobtainedfrommechanicsofmaterialsapproach正確答案:【Allthetransverseloadsactingonasymmetryplane#Theresultantmomentalwaysparalleltotheneutralaxis#Thelateraldeflectionisperpendiculartotheneutralaxis,andparalleltotheloadingplane#Stresscomponentsforsymmetricbendingcanbeobtainedfrommechanicsofmaterialsapproach】4、問(wèn)題：Whichofthefollowingstatementsarecorrectforunsymmetricbending?選項(xiàng)：A、Itdoesn’trequiresuchasymmetryplanefortheloadsB、TheresultantmomentisnolongerparalleltotheneutralaxisC、ThelateraldeflectionisperpendiculartotheneutralaxisD、Theresultantmomentisperpendiculartotheloadingplane正確答案:【Itdoesn’trequiresuchasymmetryplanefortheloads#Theresultantmomentisnolongerparalleltotheneutralaxis#Thelateraldeflectionisperpendiculartotheneutralaxis#Theresultantmomentisperpendiculartotheloadingplane】5、問(wèn)題：Wecanchooseanyplanecoordinatesintheunderunsymmetricbending,unlesstheyarerequiredtobecentroidalaxis.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】6、問(wèn)題：Whentheforcedoesnotactthroughtheshearcenter,inadditiontobending,atwistingactionresults.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】7、填空題：Weassumethatthereisonly()inthecurrentunsymmetricbeam.正確答案:【bending】8、填空題：Acurvedbarorbeamisastructuralelementforwhichthelocusofthecentroidsofthecrosssectionsisacurvedline()deformation.正確答案:【before】QuizforChapter111、問(wèn)題：InPrandtlstressfunctionmethod,thestressinabarofarbitrarysectionmaythusbedeterminedbysolving()alongwiththegivenboundaryconditions.選項(xiàng)：A、B、C、D、正確答案:【】2、問(wèn)題：Intreatingnon-circularprismaticbars,whichofthefollowingstatementsarecorrect?選項(xiàng)：A、TheshearstressesaretreatedtobezeroatcornersB、Theshearstressesvariesalongthesamecontouronthesamecross-sectionC、Weneedtodevelopnewtheoriesthatcanaccountforwarpingofthecrosssection.D、Wecanstillemploythemethodinmechanicsofmaterials正確答案:【Theshearstressesaretreatedtobezeroatcorners#Theshearstressesvariesalongthesamecontouronthesamecross-section#Weneedtodevelopnewtheoriesthatcanaccountforwarpingofthecrosssection.】3、問(wèn)題：Intreatingnon-circularprismaticbars,crosssectionsinitiallyplaneexperienceout-of-planedeformationorwarping,andthebasickinematicassumptionsoftheelementarytheoryareappropriate.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【錯(cuò)誤】4、問(wèn)題：Inmechanicsofmaterials,theshearstrainvarieslinearlyfromzeroatthecentertoamaximumontheoutersurfaceforcircularcrosssections.選項(xiàng)：A、正確B、錯(cuò)誤正確答案:【正確】5、填空題：InPrandtlstressfunctionmethod,thestressfunctionis()onthelateralsurface.正確答案:【constant##%_YZPRLFH_%##aconstant##%_YZPRLFH_%##zero##%_YZPRLFH_%##0】QuizforChapter121、問(wèn)題：Theprincipleofminimumtotalpotentialenergyisdefinedby選項(xiàng)：A、B、C、D、正確答案:【】2、問(wèn)題：Whichofthefollowingrelationsisnotcorrectfromthestrainenergy?選項(xiàng)：A、B、C、D、正確答案:【】3、問(wèn)題：Thefeaturesofenergymethods:選項(xiàng)：A、Theyinvolveonlyscalerquantities,suchasworkandenergyB、TheyareappliedtoderiveapproximatesolutionsortoformulatecomputermodelsC、TheyanalogoustoLagrange’ssolutio