简介：Aplasticdeformationzonenearascrewdislocationistreatedasanequivalenttrans-formationinclusionbymeansoftheEshelbyinclusiontheory.Aclosed-formsolutionfordeter-miningtheinteractionbetweenascrewdislocationandaplasticallydeformedzoneofanarbitraryshapeisobtainedbyusingthesolutionbetweenadislocationandanequivalenttransformationinclusion.

简介：ThescatteringofLovewavesbyaninterfacecrackbetweenapiezoelectriclayerandanelas-ticsubstrateisinvestigatedbyusingtheintegraltransformandsingularintegralequationtechniques.Thedy-namicstressintensityfactorsoftheleftandtherightcracktipsaredetermined.Itisfoundfromnumericalcalculationthatthedynamicresponseofthesystemdependssignificantlyonthecrackconfiguration,thema-terialcombinationandthepropagatingdirectionoftheincidentwave.Itisexpectedthatspecifyinganappro-priatematerialcombinationmayretardthegrowthofthecrackforacertaincrackconfiguration.

简介：Formulationintermsofhypersingularintegralequationsfortheinteractionbetweenstraightandcurvedcracksinplaneelasticityisobtainedusingthecomplexvariablefunctionsmethod.Thecurvedlengthcoordinatemethodandasuitablenumericalschemeareusedtosolvesuchintegralsnumericallyfortheunknownfunction,whicharelaterusedtofindthestressintensityfactor,SIF.

简介：Thesqueezeflowofarigid-plasticmediumbetweenparalleldisksisconsideredforsmallgapswithpartialwallslip.Thestressdistributionandthesqueezeforcebetweenparalleldisksofarigid-plasticmediumwiththefollowingfourdifferentslipboundaryconditionsareobtained.(1)TheCoulombicfrictionconditionisapplied,andthestressdistributiononthewallisderived,whichislinearorexponentialdistributionintheno-slipareaorsliparea.(2)Itisassumedthattheslipvelocityatthedisksincreaseslinearlywiththeradiusuptotherimslipvelocity,withthestressdistributionandthesqueezeforcegained.(3)Theassumptionthattheslipvelocityatthedisksisrelatedtotheshearstresscomponentisused,withthestressdistributionandthesqueezeforceobtained,whichisequivalenttotheresultgivenin(2).(4)Rationalvelocitycomponentsareintroduced,andthestressdistributionissatisfied.

简介：Aschemeisdevelopedforanalysingtheinteractionbetweenafoundationandanonlin-earrockandsoilmedium,inwhichthefoundationisconsideredasalinearelasticbodyandatypicalboundaryintegralequationmethod(BIEM)isemployed.(hathebasisoftakingthenonlinearproper-tiesofthemediumintoaccount,aperturbationBIEMisdeveloped.Thefundamentalequationsforthenonlinearcouplinganalysisareformulated,andtypicalproblemsaresolvedanddiscussedbythepre-sentmethod.

简介：Westudiedthecoupleddynamicbehaviorofaquartz-crystal-resonator(QCR)/microbeamssysteminthethickness-shearmotions.Throughtakingintoaccountthecouplestressinthedynamicequationsofthequartzplate,bothcontinuousconditionsofshearforceandbendingmomentattheresonator/micro-beamsinterfacearerealized.FrequencyshiftofthecompoundQCRsysteminducedbymicro-beamsisstudiedindetail.Theobtainedresultsareusefulindevicedesignandfrequency-stabilityanalysisofquartzcrystalresonators.

简介：ByusingtheSomiglianarepresentationandtheconceptsoffinite-partintegrals,asetofhypersingularintegralequationsoftheinteractionbetweentwoparallelplanarcracksinathree-dimen-sionalfinitebodysubjectedtoarbitraryloadsisderived,andthenitsnumericalmethodisproposedbythefinite-partintegralmethodcombinedwiththeboundaryelementmethod.Accordingtotheanalytictheoryofhypersingularintegralequations,thesquarerootmodelsofdisplacementdiscontinuitiesintheelementsnearthecrackfrontareapplied,andthusthecomputationalprecisionisraised.Basedonthis,thestressintensityfactorscanbedirectlycalculated.Finally,thestressintensityfactorsofsever-altypicalinteractionproblemsarecalculated.