A FINITE ELEMENT ANALYSIS OF THE LARGE PLASTIC DEFORMATION BEHAVIOR OF AMORPHOUS GLASSY CIRCULAR POLYMERIC BARS

作     者：Hu, P Liu, XY Na, JX 

作者机构：JILIN UNIV TECHNOLDEPT APPL MECHCHANGCHUN 130025PEOPLES R CHINA JILIN UNIV TECHNOLDEPT MECH ENGNCHANGCHUN 130025PEOPLES R CHINA 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：1997年第10卷第2期

页      面：138-147页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：BPA molecular network model finite element formulation amorphous glassy circular polymeric bars deformation localization development 

摘      要：The BPA eight-chain molecular network model is introduced into the finite element formulation of elastic-plastic large deformation. And then, the tensile deformation localization development of the amorphous glassy circular polymeric bars (such as polycarbonates) is numerically simulated. The simulated results are compared with experimental ones, and very good consistence between numerical simulation and experiment is obtained, which shows the efficiency of the finite element analysis. Finally, the influences of the microstructure parameter S-ss on tensile neck-propagation and triaxial stress effect are studied.