A Molecular Based Dynamic Model for Viscoelastic Responses of Rubber in Tensile Deformations

Abstract

Dynamic equations are developed for rubber viscoelasticity based upon a stick-slip continuum molecular based model. The model considered is a continuum simulation of a tube reptation model in which a chemically cross-linked (CC) system of molecules act as a constraint box per unit volume for a physically constrained (PC) system of molecules. The CC-system carries along the PC-system during instantaneous step deformations. The subsequent relaxation of the PC-system is determined by the history of the CC-system and thermodynamic considerations. At the same time the PC-system deformation acts as an internal variable affecting the relaxation of the CC-system. Modeling of this relaxation process and subsequent employment of energy density functions constitutes on basis to model viscoelastic effects in rubber deformations.

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Document Details

Document Type
Technical Report
Publication Date
Nov 08, 2000
Accession Number
ADA451430

Entities

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  • H. Thomas Banks
  • N. G. Medhin

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  • North Carolina State University

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  • Materials and Manufacturing Processes

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  • Chemistry (specifically Chemical Fluorescence)
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