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Title: On the performance of higher order theories for transient dynamic analysis of sandwich and composite beams
Authors: MARUR, SR
Keywords: Finite-Elements
Issue Date: 1997
Citation: COMPUTERS & STRUCTURES, 65(5), 741-759
Abstract: Higher-order shear-deformable refined theories, based on isoparametric elements, are adopted for transient dynamic analysis of symmetric and unsymmetric sandwich and composite beam constructions. These shear-correction coefficient free theories model cross sectional warping using nonlinear variation of inplane displacements across the depth. They also incorporate transverse shear stress in the formulation. A special, lumping scheme is employed for the evaluation of diagonal mass matrix, and a central difference scheme is used for carrying out the integration of the equation of motion, to obtain the response history. Through numerical experiments, the efficacy of higher-order models in predicting displacements and stress, resultants over from the first-order theory, with respect to time, is clearly brought out in this paper. (C) 1997 .
ISSN: 0045-7949
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