Abstract
The static response of simply supported carbon/epoxy composite plates in a hygrothermal environment is carried out using the general purpose finite element program COSMOS. The static load model and the hygrothermal incorporation are solved separately. The hygrothermal effect is introduced by using empirical relations for degrading the material stiffness properties of the matrix. The corresponding ply properties are calculated using Mori-Tanaka method. A parametric study is conducted by varying the fiber volume fraction and the fiber orientation of the angle plies in the laminate.
Highlights
The use of composite materials in the modern engineering applications has been increasing rapidly
A laminate is a stack of lamina, with different fiber orientations, bonded together to attain desired properties
Each layer consists of Carbon fibers and Epoxy matrix
Summary
The use of composite materials in the modern engineering applications has been increasing rapidly. Aerospace structures are few examples of their application. Steel bridges are replaced by composite materials due to their superior qualities like higher strength-to-weight ratio. A laminate is a stack of lamina, with different fiber orientations, bonded together to attain desired properties. The material and orientation of layers above the mid plane are identical to those below. In a symmetric laminate the bending-stretching coupling is absent. This is not true for unsymmetric laminates. Plate theories can be applied in the analysis of laminated composites and it is very important to study the response of these materials to environmental conditions like temperature and moisture. As alternative to the experimental determination of material properties of fiber matrix composite material is usage of various homogenization techniques. Most fiber matrix composites have random arrangement of the fibers [2] (Fig. 1)
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