Affiliation:
1. School of Textile Technology, University of New South Wales Kensington, New South Wales, Australia
Abstract
This paper is concerned with a mathematical analysis of the longitudinal rheological behavior of dimensionally and structurally variable fibers. At first, the general relation ships for the stress-strain behavior of such fibers are derived by ignoring time effects. The uniform and non-uniform fibers are compared for the case when stress and strain follow a power law relationship, and the stress-strain behavior of non-uniform wool fibers is calculated to illustrate the effect with actual fibers. Structural and dimensional non- uniformities are shown to have considerable significance. When both variabilities are present, the two non-uniformities may act additively or subtractively, depending on the relationships between them. In considering time effects, the behavior of several rheological models is examined. The uniform and non-uniform specimens are compared for creep (constant load), stress relaxation (constant extension) and stress-strain behavior at constant rates of loading and straining. To illustrate the applications possible with actual fibers, the creep behavior of wet wool fibers is briefly treated.
Subject
Polymers and Plastics,Chemical Engineering (miscellaneous)
Cited by
12 articles.
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