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简介：Inthispaper,wegivethedistributionoftemperaturefie1dandpulsephotoacousticpressuregener-atedbypulsedlaserinliquid.Theeffectofpulsedurationandlaserbeamdimensiononthepres-suresignalisdiscussed.TheexperimentalresultsobtainedbytheGausslaserbeamdeflectiontech-niqueagreewiththetheoryqualitatively.Thistechniqueprovidesanovelopticalmethodforthecontactlessandrapidmeasurementofthermodynamicparameters.

简介：Anembeddedcylinderisalarge-diametercylinderembeddedinasoilfoundation.Thestateoffailureofsuchanembeddedcylindricalstructureshowslargedeflectioninsteadofslideandoverturnofthetraditionalgravitytypeofstructureplacedonarubblebaseorfoundationbase.Thecriticalvalueofdeflectionoftheembeddedcylindricalstructure,whichisthemaximumallowabledeflectionforstabilitycalculationofthecylinder,isavitalcontrolvalue.Throughinvestigationondeflectionandsoilpressuresonanembeddedcylinderbymodelexperiments,thevariationsoftheangleofrotationθofacylinderwitheffectiveanti-overturningratioηandmomentMHofthrustarediscussed.Onthebasisofexperimentalstudy,thecriticalvalueofdeflectionofthecylindricalstructureisproposedinthepaper.Meanwhile,theformulasforcalculatingdeflectionofcylindersarederived.

简介：ThesolutionandcomputationalaspectsonnonlineardeflectionofYongjiangRailwayBridgeinNingbowereinvestigated.Anapproximateiterationalgorithmonnonlineargoverningequationwaspresented,andtheobtainedresultsshowthat,ifaltitudedifferenceandspanoftheriverbanksaretakenas5metersand100meters,respectively,themaximumgradientinthemiddleofthebridgeexceeds5%,muchlargerthanmaximumallowancegradientinrailwaydesigncode.Therefore,anewsolutionschemefordecreasinggradientofthebridgeisputforward,thatis,thealtitudedifferencebetweentworiverbankscanbedecreasedtoabout1/10oftheinitialmagnitudebybuildingroadbedswith0.5%gradientandIkilometerlengthattworiverbanks.Asadirectresult,thedeflectiongradientoftherailwaybridgeismuchreducedandthevalueisbetween0.5%～0.6%.

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简介：Basedonenergyequilibrium,anewprocedurecalledtheMembraneFactorMethodisdevel-opedtoanalyzethedynamicplasticresponseofplateswithdeflectionsintherangewherebothbendingmo-mentsandmembraneforcesareimportant.Thefinaldeflectionofasimply-supportedcircularrigid-plasticplateloadedbyauniformlydistributedimpulseisobtained.Incomparisonwithotherapproximatesolutions,thepresentresultsarefoundtobesimplerandinbetteragreementwiththecorrespondingexperimentalvaluesreoordedbyFlorence.

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简介：Thispaperfollowstheworkof[1,2].Therearesomeprogressindealingwithmoderatelysmallrotations(thesquaresofrotationanglesaretheorderofmagnitudeofstrains)ofmiddlesurfacenormalsofinsideandoutsideringshellsandcompressedangleofbellows.Calculationresultsagreewithexperimentswell.Tobellowdesign,themethodgiveninthispaperisofpracticalvalueandthediscussionoftheinfluenceofcompressedangleoncharacteristicrelationishelpful.