Tuesday, 12 October 2004 - 9:15 AM

This presentation is part of : Horgan Symposium

Stress-Softening in Equibiaxial Stretch of Non-Gaussian Network Models

Alex Elias- Zuniga, Instituto Technologico y de Estudios Superiores de Monterrey, Departamento de Ingenieria Mecanica, E. Garza Sada 2501 Sur, Monterrey, N.L., C.P. 64849, Mexico and Millard F. Beatty, University of Nebraska-Lincoln, Department of Engineering Mechanics, PO Box 910215, Lexington, KY 40591-0215.


A stress-softening phenomenological model is applied to study the Mullins effect in the equibiaxial extension of a rubberlike material with limiting chain extensibility. The model is used to predict stress-softening behavior in the kinematically equivalent uniaxial compression of a block. It is shown that the theoretical predictions for two non-Gaussian molecular network models compare favorably with balloon inflation and simple compression data by others.

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