TOWARD A NEW PHENOMENOLOGICAL FLOW RULE FOR ORIENTATIONALLY HARDENINGGLASSY-POLYMERS

Authors
Citation
Sv. Harren, TOWARD A NEW PHENOMENOLOGICAL FLOW RULE FOR ORIENTATIONALLY HARDENINGGLASSY-POLYMERS, Journal of the mechanics and physics of solids, 43(7), 1995, pp. 1151-1173
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics, Condensed Matter",Mechanics
ISSN journal
0022-5096
Volume
43
Issue
7
Year of publication
1995
Pages
1151 - 1173
Database
ISI
SICI code
0022-5096(1995)43:7<1151:TANPFR>2.0.ZU;2-5
Abstract
A new yield surface is proposed herein, and the behavior of its associ ated flow rule is explored. This anisotropic dow rule exhibits solutio ns which follow fairly well the orientational hardening behavior of gl assy polymers. Specifically, solutions obeying the flow rule are calcu lated for various orthotropic loading histories, and comparisons are m ade to experimental data for polycarbonate. While these solutions have been restricted to rate independent plasticity in this initial study, the comparisons to experiment are encouraging. Additionally, the fram ework given herein provides a rational means for describing phenomenol ogically deformation induced elastic stiffening and deformation induce d elastic anisotropy in these materials.