Publication: Free vibration of skew laminates
Date
01-01-1999
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Abstract
A general high precision triangular plate bending finite element has been extended to the free vibration analysis of laminated skew plates by deriving the consistent mass matrix in explicit form. The boundary conditions on the skew edges are imposed through the transformed element matrices. The accuracy of the present formulation has been verified against literature values. The fundamental frequencies are obtained for simply supported and clamped antisymmetric angle-ply skew laminates. In this analysis, the effects of skew angle, fibre orientation angle, number of layers and stacking sequence on the fundamental frequency have been studied. The frequencies are found to increase with skew angle. Also, the skew angle is seen to have considerable influence on the variations of the frequencies with fibre orientation angle and number of layers in the laminate.
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Keywords
Finite element, Free vivration analysis, Skew laminates