橡胶材料在ABAQUS的材料参数设定

橡膠材料在ABAQUS中使用之設定AlvinChenPage2OutlineElasticBehaviorCompressibility(Hyperelasticity)Strainenergypotentials(Hyperelasticity)ExamplePage3ElasticBehaviorLinearelasticitySmallelasticstrains(normallylessthen5%)Isotropic,orthotropic,orfullyanisotropicCanhavepropertydependontemperatureand/orotherfieldvariablesHypoealsticitySmallelasticstrains-thestressesshouldnotbelargecomparedtotheelasticmodulusofthematerialLoadpathismonotonicIftemperatureistobeincluded“UHYPEL”HyperfoamIsotropicandnonlinear,energydissipationandstresssofteningeffectsCellularsolidswhoseporositypermitsverylargevolumetricchangesDeformelasticallytolargestrains,upto90%strainincompressionRequiresgeometricnonlinearitybeaccountedinanalysisstepPage4ElasticBehaviorPorouselasticitySmallelasticstrains(normallylessthen5%)Nonlinear,isotropicelasticityIsotropic,orthotropic,orfullyanisotropicCanhavepropertydependontemperatureand/orotherfieldvariablesViscoelasticity“viscous”(internaldamping)effect,timedependentLarge-strainproblemHyperealsticityForrubberlikematerialatfinitestrainthehyperelasticmodelprovidesageneralstrainenergypotentialtodescribethematerialbehaviorfornearlyincompressibleelastomers.Thisnonlinearelasticitymodelisvalidforlargeelasticstrains.Page5ElasticBehaviorTheHyperelasticmaterialmodel:IsisotropicandnonlinearIsvalidformaterialsthatexhibitinstantaneouselasticresponseuptolargestrains(suchasrubber,solidpropellant,orotherelastomericmaterials)Requiresthatgeometricnonlinearitybeaccountedforduringtheanalysisstep,sinceitisintendedforfinite-strainapplications.Page6Compressibility(Hyperelasticity)Mostelastomers(solid,rubberlikematerials)haveverylittlecompressibilitycomparedtotheirshearflexibility.InABAQUS/Standardtoassumethatthematerialisfullyincompressible.Anotherclassofrubberlikematerialsiselastomericfoam,whichiselasticbutverycompressible.InABAQUS/Standardtheuseofhybird(mixedformulation)elementsisrecommendedinbothincompressibleandalmostincompressiblecases.Page7Compressibility(Hyperelasticity)Page8Strainenergypotentials(Hyperelasticity)Hyperelasticmaterialsaredescribedintermsofa“strainenergypotential”,whichdefinesthestrainenergystoredinthematerialperunitofreferencevolume(volumeintheinitialconfiguration)asafunctionofthestrainatthatpointinthematerialArruda-BoyceformMarlowformMooney-RivlinformNeo-HookeanformOgdenformPolynomialformReducedPolynomialformVanderWaalsformYeohformPage9Strainenergypotentials(Hyperelasticity)Page10Strainenergypotentials(Hyperelasticity)Page11Strainenergypotentials(Hyperelasticity)Page12Strainenergypotentials(Hyperelasticity)Page13Strainenergypotentials(Hyperelasticity)