泡沫硅橡膠有限變形的力學行為.pdf

1、重慶大學碩士學位論文泡沫硅橡膠有限變形的力學行為姓名：勵凌峰申請學位級別：碩士專業(yè)：流體力學指導教師：劉占芳2001.4.1幣fk上學壩I學位論文ABSTRACTABSTRACTThenonlinearhyperelasticandviscoelasticconstitutiverelationforporoussiliconecompressiblerubbermaterialsweredeftvedbasedoncontinuenl

2、editlrnmechanicsflameandmacroscopicprincipleofthermodynamicThenonlinearmechanicbehaviorofsiliconerubberundercompressionisinvestigatedinthisdissertationBiphasic190rOLlSmediummodelbasedonthemixturetheoryincontinuemechanics

3、WasusedtodepicttheporOllSsiliconecompressiblerobbermaterialsTheswainenergyfunctionswhichwasdecoupledintoisochoficpartsandvolumetricpartswerepresentedfordescribingmechanicalbehaviorsofcompressiblerubbermaterial，theconstit

4、utivemodelwasthenattainedAcomparisonoftheoreticalpredictionwithexperimentalresultsⅥ腳implementedTheeffectsofporosityandvolumetricdeformationORcompressivebehaviorsofpomnssiliconerubbermaterialWerediscussedThenthegoverninge

5、quationsaleaRainedbasedonthemodelofsiliconecompressiblerubberandtlleelementformulationforisotropyhyperelasticmaterialisObtainedbyuseoftotalLagrangemethodThenumericalreSultsarecomparedwiththeexperimentalresultsProceedingf

6、romfiniteviscoelasticdeforma60nofthesiliconerubberfoariawithmodestlyhi曲porosityincompressionthestrainenergyfunctionandrelaxationfunctionWasdevelo[edtodescriberviscoelasticmechanicalbehaviorsofporollscompressiblerubberlik

7、ematerials，thenthenonlinearconstitutiverelationfor190rollssiliconerubbermatedaIswasderivedandareducedtimeisintroducedinwhichtheshiftfunctiondependsonthevolumechangeandthesheardeforillation11”materialparameterswerefittedw

8、iththehelpofuniaxialsinglesteprelaxationcompressiontestforthesiliconelU／【，ITel“materialTheinfluencesofvolumechangeandtheshe盯deformationonstressrelaxationbehavioroftheporoussiliconerubberwerediscussed碭ethermoetasticandthe

9、tmoviscoelasticconstitutiverelationsofsiliconerubbermaterialsarehavestigatedinthisdiSSeIt甜oILTheequationrelatedwithstressstxainandtemperatureisattainedbyllseofentropyandenergyandtherelationoftemperatureentropyandenergyis

10、discussed耵把relationofstressandtemperatureofsiliconerubberunderthefinitedefonaationispresentedbybuildingstrainealergyandHelmholtzfreeenergyhasedonthermodynamicflame111ethermoviscoelasticrelatiOnisresearchedbyintroducingar