Polymer Networks with Slip-links: 1. Constitutive Equations for an Uncross-linked Network

Drozdov, A.
September 2006
Continuum Mechanics & Thermodynamics;Sep2006, Vol. 18 Issue 3/4, p157
Academic Journal
Constitutive equations are derived for the mechanical response of polymers at three-dimensional deformations with finite strains. A polymer is treated as an incompressible network of flexible chains with free ends whose motion at the micro-level is constrained by a random number of slip-links. The slip-links move affinely with macro-deformation, whereas chains can slide with respect to slip-links. When a free end of a chain slides through a slip-link, the slip-link disappears. Stress�strain relations are developed by using the laws of thermodynamics. They involve only one material constant with a transparent physical meaning.


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