Domain of validity and fit of Gent-Thomas and Flory-Erman rubber models to data
T. Beda, H. Gacem, Y. Chevalier, P. Mbarga
Vol. 2., No.9., Pages 615-622, 2008
DOI: 10.3144/expresspolymlett.2008.74
DOI: 10.3144/expresspolymlett.2008.74
Corresponding author: T. Beda 
GRAPHICAL ABSTRACT
ABSTRACT
In rubber investigation, many strain energy models have been proposed for the hyperelastic behavior. One of earlier models, that of Gent-Thomas (1958), based on theoretical and experimental considerations, has been forsaken in the rubber modeling literature, because of difficulties in establishing its domain of validity and then evaluating the relative mechanical parameters. This note presents how to validate a partial model that is suitable just in a portion of the complete experimental domain: moderate, transition and stiffening deformations. Illustrations of domain validation for the incomplete phenomenological Gent-Thomas model and a simulation with the constrained chain model of Flory-Erman are exposed and their numerical characterisation from experimental data is also revealed.
