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The BPA eight chain molecular network model is introduced into the finite element for-mulation of elastic-plastic large deformation.And then,the tensile deformation localization develop-ment of the amorphous glassy circular polymeric bars(such as polycarbonates)is numerically simulat-ed.The simulated results are compared with experimental ones,and very good consistence betweennumerical simulation and experiment is obtained,which shows the efficiency of the finite elementanalysis.Finally,the influences of the microstructure parameter S_ on tensile neck-propagation andtriaxial stress effect are studied.
The BPA eight chain molecular network model is introduced into the finite element for-mulation of elastic-plastic large deformation. And then then the tensile deformation localization develop-ment of the amorphous glassy circular polymeric bars (such as polycarbonates) is numerically simulat-ed . The simulated results are compared with experimental ones, and very good consistence of numerical simulation and experiment is obtained, which shows the efficiency of the finite element analysis. Finally, the influences of the microstructure parameter S_ on tensile neck-propagation andtriaxial stress effects are studied.