简介：AmechanicalmodelisestablishedformodeⅡinterfacialcrackstaticgrowingalonganelastic-elasticpowerlawcreepingbimaterialinterface.Forfrictionalcontactofboundaryconditionsoncrackfaces,asymptoticsolutionsofthestressesandstrainsofneartip-crackaregot.Itwasshownthatinstablecreepgrowingphase,elasticdeformationandviscousdeformationareequallydominantinthenear-tipfield,thestressandstrainhavethesamesingularityandthereisnottheoscillatorysingularitythefield.Throughnumericalcalculation,itisshownthatthefrictionalcoefficientηnotablyinfluencethecrack-tipfield.

简介：ScatteringanddynamicstressconcentrationsoftimeharmonicSH-waveinaninfiniteelasticpiezoelectricmediumwithamovablerigidcylindricalinclusionarestudiedinthispaperwiththehelpofcomplexvariableandwavefunctionexpansionmethod.Therelationsthatamovablerigidcylindricalinclusiondependsonintensityofincidentwaveandelectricfieldarerevealed.Theexpressionsofdynamicstressattheedgeoftheinclusionareobtained.Numericalcalculationsaremadewithdifferentwavenumbersanddifferentpiezoelectriccharacteristicparameters.Thecalculatingresultsshowthatdynamicstressconcentrationsattheedgeoftheinclusionhavelineardependenceontheincidentelectricfield.Anddynamicanalysesareveryimportantforaninfinitepiezoelectricmediumwithamovablerigidcylindricalinclusionatlargerpiezoelectriccharacteristicparameters.

简介：Throughanalyzingtherollmodeloftheintegratedsystemoffinandanti-rollingtank,thispaperusesbinomialequationtosimplifythemoduleandcheckhowtheapproximateparameterssimulatetheoriginalfunction.Basedonthesimplifiedmodule,theinfluenceoffinandanti-rollingtankonthecoefficientitemsoftherollmoduleisdiscussed,andtheinfluencingfactorsbetweenfinandanti-rollingtankareanalysed.Andthroughsimulation,theinfluenceofactionbetweenfinandanti-rollingtankonthestaticcharacteristics,andtheintegratedstabilizationeffect,areanalyzed.

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