期刊
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
卷 75, 期 -, 页码 92-106出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijnonlinmec.2014.10.006
关键词
Fiber reinforced biological tissue; Anisotropy; Fiber dispersion; Generalized structure tensor; Uniaxial tension
类别
资金
- Reintegration Grant under EC Framework VII
When an isotropic material is subject to a uniaxial tension, the principal strain transverse to the direction of applied load is always negative. However, in fiber reinforced materials the transverse principal strain can change its sign as the load increases, passing through the zero-points, known as perversions. We investigate how the number of perversions in a material reinforced by two symmetrically aligned families of distributed fibers depends both on the degree of fiber dispersion and the model used for fiber dispersion. Angular integration and three variants of the generalized structure tensor approach are considered and discussed. The study of perversions clearly demonstrates the qualitative difference between these approaches in the case of high dispersion of fibers. The results suggest that this difference is primarily due to the way compressive fibers are modeled. (C) 2014 Elsevier Ltd. All rights reserved.
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