Micro mechanisms of load transfer in a hybrid unidirectional fiber–reinforced epoxy composite with broken fibers
Publish place: 2nd International Conference on Composites: Characterization, Fabrication and Application
Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
COMPOSIT02_087
تاریخ نمایه سازی: 24 مهر 1389
Abstract:
In this paper effects of mechanical and physical properties of polymer matrices of hybrid unidirectional fiber-reinforced composites with broken fibers are investigated, numerically and analytically. It is assumed that all fibers lie in one direction while loaded by a force po at infinity. The matrix and the fibers are considered homogeneous, isotropic and linearly elastic. To study effects of hybridization two types fiber arrangements are presented. The analytical solution is obtained using shear-lag and improved shear-lag theory. The analytical results based on two models, were compared to those of finite element values. Comparison of the predicted shear stresses and average normal stresses to finite element analysis demonstrates that improved shear-lag model can be used to rapidly estimate the average normal stress distribution in the various constituents, although the interfacial shear stresses are less accurate.
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Authors
M.M Attar
Member of academic staff of Islamic Azad University, Hamadan Branch
M Haghpanahi
Associate Professor, Iran University of Science & Technology, Tehran, Iran
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