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On the nonlinear viscoelastic behaviour of nylon fiber |
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| Authors: | RH Blanc A Ravasoo |
| Affiliation: | a Laboratoire de Mécanique et d'Acoustique du Centre National de la Recherche Scientifique, 31, chemin J. Aiguier, 13402, Marseille, Cedex 20, France b Department of Mechanics and Applied Mathematics, Institute of Cybernetics, Estonian Academy of Sciences, Akadeemia tee 21, EE0026, Tallinn, Estonia |
| Abstract: | Nonlinear time-dependent stress relaxation was determined experimentally in nylon fiber in the small strain domain. This process is accounted for on the basis of a quasi-linear viscoelastic theory. A nonlinear modified constitutive equation for the viscoelastic medium is deduced. In processing the experimental data it turned out to be necessary to keep the nonlinear terms up to cubic in the constitutive equation for nylon fiber. The elastic and rheological constants in the constitutive equation for nylon fiber are evaluated. |
| Keywords: | Nylon fiber Relaxation test Finite strain Cubic nonlinearity Nonlinear viscoelastic theory Constitutive equation |
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