Paper Title:
Viscoplastic Constitutive Equation of High-Density Polyethylene
  Abstract

A viscoplastic constitutive equation based on the kinematic hardening creep theory of Malinin-Khadjinsky and the nonlinear kinematic hardening rule of Armstrong-Frederick is formulated to describe the inelastic behavior of high-density polyethylene under various loading. The gentle progress of back stress by the introduction of loading surface in the viscoplastic strain space and smaller material constant under unloading can be expressed. Material constants are identified by various stress-strain curves under compression at constant strain rate and creep curves under compression at constant stress. The viscoplastic model can describe stress-strain curve under compression with change in strain rate and shear stress-strain curve including unloading. The model can qualitatively describe stress-strain curves under compression with changed strain rate including unloading, but it is quantitatively insufficient.

  Info
Periodical
Key Engineering Materials (Volumes 340-341)
Edited by
N. Ohno and T. Uehara
Pages
1097-1102
DOI
10.4028/www.scientific.net/KEM.340-341.1097
Citation
Y. Sanomura, M. Mizuno, "Viscoplastic Constitutive Equation of High-Density Polyethylene", Key Engineering Materials, Vols. 340-341, pp. 1097-1102, 2007
Online since
June 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Masamichi Kawai, Jian Qi Zhang
Abstract:A macromechanics constitutive model to describe the anisotropic creep behavior of unidirectional composites under off-axis loading...
161
Authors: Afaf Saai, Laurent Tabourot, Christophe Déprés, Herve Louche
Abstract:In this paper, we present a fundamental model of FCC single crystal behaviour at room temperature: this model includes kinematic work...
577
Authors: Olivier Bouaziz, A. Aouafi, Sebastien Allain
Abstract:New experimental data related to the grain size and the Bauschinger effects have been obtained for ferritic steels with grain size in the...
605
Authors: Ke Chen, Jian Ping Lin, Mao Kang Lv, Li Ying Wang
Abstract:With the increasing use of finite element analysis method in sheet forming simulations, springback predictions of advanced high strength...
200
Authors: Jing Hu, Xiao Xing Li, Kwan Soo Chung, Rao Yao
Abstract:We present a study on spring-back prediction in the stretching bending process using the Chaboche model combined isotropic-kinematic...
1745