Some Effects of Fiber Wabbliness in Composite Plates.
Final rept. (Part 1),
TEL-AVIV UNIV (ISRAEL) SCHOOL OF ENGINEERING
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The effects that slight deviations in fiber directions have on the stress field in composite plates are discussed. The fiber reinforced plates are represented by the equivalent modulus theory as homogeneous transversely isotropic regions and the deviations in fiber directions are incorporated by varying the directions of the axes of the material symmetry. Solutions are presented to three specific boundary value problems. In two of those problems, comparison is provided with re-sults derived under the assumption of fiber inextensibility. It is shown that, for the problems considered, the model of inextensible fibers yields very satisfactory answers. Furthermore, it is found that when the misalignments in fiber directions are localized within a small region of the plate they give rise to secondary stresses whose amplitude is much higher than the magnitudes of the secondary stresses associated with widely spread misalignments. Author-PL
- Laminates and Composite Materials