C0 FINITE-ELEMENT GEOMETRICALLY NONLINEAR-ANALYSIS OF FIBER REINFORCED COMPOSITE AND SANDWICH LAMINATES BASED ON A HIGHER-ORDER THEORY

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C0 FINITE-ELEMENT GEOMETRICALLY NONLINEAR-ANALYSIS OF FIBER REINFORCED COMPOSITE AND SANDWICH LAMINATES BASED ON A HIGHER-ORDER THEORY

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Title: C0 FINITE-ELEMENT GEOMETRICALLY NONLINEAR-ANALYSIS OF FIBER REINFORCED COMPOSITE AND SANDWICH LAMINATES BASED ON A HIGHER-ORDER THEORY
Author: KANT, T; KOMMINENI, JR
Abstract: This paper presents a refined higher-order shear deformation theory for the linear and geometrically non-linear finite element analysis of fibre reinforced composite and sandwich laminates Laminae material is assumed to be linearly elastic, homogeneous and isotropic/orthotropic. This theory accounts for parabolic distribution of the transverse shear strains through the thickness of the laminate and higher-order terms in Green's strain vector in the sense of von Karman. A simple C0 finite element formulation is presented with a total Lagrangian approach and a nine-node Lagrangian quadrilateral element is chosen with nine degrees of freedom per node. Numerical results are presented for linear and geometric non-linear analysis of multi-layer cross-ply laminates and sandwich plates. The present theory predicts displacements and stresses more accurately than the first-order shear deformation theory. The results are compared with available closed-form and numerical solutions of both three-dimensional elasticity and plate theories.
URI: http://dx.doi.org/10.1016/0045-7949(92)90436-4
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10591
http://hdl.handle.net/10054/10591
Date: 1992


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