NUMERICAL SIMULATION FOR THE SIMPLE SHEAR TEST IN AMORPHOUS GLASSY POLYMERS

(整期优先)网络出版时间:1999-01-11
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Inthispaper,adrivingstressfiniteelementmethodofelastic-plasticlargedeformationbasedonimplicittimeintegratingalgorithmandaneight-chainmolecularnetworkmodelisusedforthenumericalsimulationofthesimplesheartestofpolycarbonate(PC)materials.Thesimulatedresultsarecomparedwithexperimentalones.Thestrainlocalizationpropagationfortheshearbanddeforma-tionforsimplesheardeformationisinvestigatednumerieaUy.TheeffectsofmicrostructureparametersinthemodelonstrainsofteningandorientationhardeningofthePCarediscussedindetail.