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Microscopic model of true strain softening and hardening in a polymer glass
Author(s) -
Krupenkin Tom N.,
Taylor Philip L.
Publication year - 1998
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/(sici)1521-3919(19980101)7:1<119::aid-mats119>3.0.co;2-m
Subject(s) - softening , polymer , hardening (computing) , materials science , strain hardening exponent , composite material , mechanics , physics , layer (electronics)
A simple microscopic model is proposed to describe the true strain softening and hardening behavior of a polymer glass. Equations of motion for the polymer chain embedded in a polymer matrix have been derived and investigated both analytically and numerically. The model correctly predicts both true strain softening and hardening phenomena. The model also allows a new interpretation of the microscopic origin of true strain softening in a polymer glass.