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Anisotropic effects of quasi-isotropic composites (I) — Modelling

✍ Scribed by Zheng Quanshui; Fang Huiyu

Publisher
Springer
Year
1996
Tongue
English
Weight
594 KB
Volume
17
Category
Article
ISSN
0253-4827

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✦ Synopsis

Esperimental obsersations show that quasi-isotropic materials, such as N-axial fibre-reinforced composites and woven materials, exhibit I-arious degrees of anisotropy in elasticity and strength, and the anisotropy in strength is normally stronger than that in 'elasticity. In view of some available experimental data and based on the general formulation of the constitutive equations and failure criteria of quasi-isotropic materials established by using the theory of representations for tensor functions, we postulate several applicable models of the constitutive equations and strength for 3and I-axial quasi-isotropic materials to reveal the anisotropic effects. In a continued work (Part II), the anisotropic effect in strength C$ an infinitely lgrge plate with a single elliptical hole or crack is studied, and the proposed stiffness and strength models are vertfied in terms of micro-mecharlical ana!).ses.

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