Author:
Lohani Dheeraj,Kamalesh V.,Badari Narayana K.,Singh Gajbir
Abstract
An eight-noded brick element is developed for accurate estimation of interlaminar stresses in composite laminates. This element incorporates the three transverse stresses σz, σyz and σxz as the degree of freedoms apart from the three displacements (u, v and w). The displacements are calculated as usual from the principle of virtual work, and the stresses are interpolated independently in the constitutive equation. In composite laminates the shear and normal stresses are continuous across the laminates. This stress continuity can be imposed using continuous shape functions for stress components. Studies are done for various laminates and results are compared with available solutions from the literature.
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