Viscoelastic constitutive model for uniaxial time-dependent ratcheting of polyetherimide polymer

被引：28
|
作者：
Pan, Douxing [1 ]
Kang, Guozheng [1 ]
Jiang, Han [2 ]
机构：
[1] SW Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China
[2] SW Jiaotong Univ, Sch Mech & Engn, Chengdu 610031, Sichuan, Peoples R China
来源：
POLYMER ENGINEERING AND SCIENCE | 2012年 / 52卷 / 09期
基金：
中国国家自然科学基金;
关键词：
MOLECULAR-WEIGHT POLYETHYLENE; UNSATURATED POLYESTER RESIN; HIGH-DENSITY POLYETHYLENE; CONDUCTIVE ADHESIVE FILM; NONLINEAR VISCOELASTICITY; CYCLIC DEFORMATION; ELEVATED-TEMPERATURE; BEHAVIOR; COMPOSITES; FATIGUE;
D O I：
10.1002/pen.23144
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Based on the experimental observations, a cyclic nonlinear viscoelastic constitutive model was proposed to describe the uniaxial time-dependent ratcheting of polyetherimide (PEI) polymer under tensioncompression and tensiontension cyclic loading. The model was constructed by extending the nonlinear viscoelastic Schapery model (Schapery, Polym. Eng. Sci., 9, 295 (1969)). The extension emphasized the changes of parameter functions used in the original model, which enabled the model to describe the ratcheting of polymer material. Comparing the simulations with corresponding experimental results, the capability of the extended model to predict the uniaxial time-dependent ratcheting of PEI was verified. It is shown that the extended model can reasonably describe the uniaxial time-dependent ratcheting of the polymer under the tensioncompression and tensiontension cyclic loading with different peak-holdings, stress rates, and stress levels. POLYM. ENG. SCI., 52:18741881, 2012. (c) 2012 Society of Plastics Engineers
引用
收藏
页码：1874 / 1881
页数：8
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