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Numerical modeling of the dynamic tensile behavior of irregular fibers

journal contribution
posted on 2004-01-01, 00:00 authored by W He, Xungai Wang
Most fibers are irregular, and they are often subjected to rapid straining during mechanical processing and end-use applications. In this paper, the effect of fiber dimensional irregularities on the dynamic tensile behavior of irregular fibers is examined, using the finite element method (FEM). Fiber dimensional irregularities are simulated with sine waves of different magnitude (10%, 30% and 50% level of diameter variation). The tensile behavior of irregular fibers is examined at different strain rates (333%/sec, 3,333%/sec and 30,000%/sec). The breaking load and breaking extension of irregular fibers at different strain rates are then calculated from the finite element model. The results indicate that strain rate has a significant effect on the dynamic tensile behavior of an irregular fiber, and that the position of the thinnest segment along the fiber affects the simulation results markedly. Under dynamic conditions, an irregular fiber does not necessarily break at the thinnest segment, which is different from the quasi-static results.

History

Journal

Journal of applied polymer science

Volume

91

Issue

5

Pagination

2855 - 2861

Publisher

Wiley

Location

Thousand Oaks, Calif.

ISSN

0021-8995

eISSN

1097-4628

Language

eng

Notes

Published in Journal of applied polymer science, vol 91, no 5, 2004 at www.interscience.wiley.com

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2004 Wiley Periodicals, Inc.

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