简介：Inordertoinvestigatethecalculationmethodsoncrackresistancecapacityofconnectioncomposedofcrossshapedsteelencasedultrahighstrengthconcrete(CSSEUHSC)columnsandsteelencasedconcrete(SEC)beamsundercycleloads,sixinteriorconnectionspecimensweretestedinthelaboratory.Adiscussiononthecrackresistancecapacitywaspresented.Calculationmethodsofcrackresistancecapacitywerededucedbasedontheexperimentalcaseandcalculationresultswereingoodagreementwiththeexperimentalresults.TheresearchresultsindicatedthatparametersofconnectioncomposedofCSSEUHSCcolumnsandSECbeamswithbettercrackresistanceperformancemaybereferredforengineeringapplication.

简介：Softmaterialisbecomingincreasinglyimportanttomanyindustries,whichleadstothedemandforabetterunderstandingofitsmechanicalpropertiesunderlargedeformation.Inthispaper,atechniqueofintegratingthedigitalmoirémethodandembedded-gratingapproachispresentedforinvestigatingmechanicalbehaviorsofavulcanizedsiliconerubberincontactwithawedge-shapedindenter.Twodistinctdeformationsectorsareobservedfromtheexperimentalresult.Asimplewayofcomputingstrainisalsopresentedbyanalysinggriddeformationwithintheframeworkofgeometricalnonlinearity.Threeregionswereobservedfromstraindistributionalongthehorizontaldirection:thecontactregion,thesink-inregionandthefar-fieldregion.Moreover,theextentofthestickyregionandthatoftheslippyregionwithinthecontactinterfacearedistinguished,whichcanproviderealisticdatafortheoreticalmodelling.Basedonthefinitedeformationelasticitytheory,thedistributionofcontactpressureandshearstressoverthecontactinterfacearederivedforpredictionofpossiblecracks.