Thermo-viscoelastic and viscoplastic behavior of high-density polyethylene

被引：43

作者：

Drozdov, A. D. ^{[1
]}

Christiansen, J. deC. ^{[2
]}

机构：

[1] Danish Technol Inst, DK-2630 Taastrup, Denmark

[2] Univ Aalborg, Dept Prod, DK-9220 Aalborg, Denmark

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2008年 / 45卷 / 14-15期

关键词：

constitutive laws; polymers; thermomechanical; viscoelastic; viscoplastic;

D O I：

10.1016/j.ijsolstr.2008.03.008

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Observations are reported on high-density polyethylene in uniaxial tensile tests with constant strain rates and relaxation tests at various temperatures ranging from 25 to 90 degrees C. A constitutive model is derived for the nonlinear viscoelastic and viscoplastic behavior of semi-crystalline polymers at three-dimensional deformations. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. It is demonstrated that (i) the model correctly approximates the observations and (ii) material parameters are independent of strain rate and change consistently with temperature. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：4274 / 4288

页数：15

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