Geometrically nonlinear analysis of laminated composite plates by two new displacement-based quadrilateral plate elements
作者： Y.X. Zhang , K.S. Kim
DOI: 10.1016/J.COMPSTRUCT.2005.01.001
关键词: Quadrilateral 、 Composite plate 、 Föppl–von Kármán equations 、 Geometry 、 Finite element method 、 Nonlinear system 、 Timoshenko beam theory 、 Boundary element method 、 Mathematics 、 Structural engineering 、 Deflection (engineering) 、 Civil and Structural Engineering 、 Ceramics and Composites
摘要: Abstract Two simple displacement-based 4-node quadrilateral elements RDKQ-NL20 and RDKQ-NL24 are developed in this paper for geometrically nonlinear analysis of thin to moderately thick laminated composite plates. The proposed plate based on the first-order shear deformation theory (FSDT) von-Karman’s large deflection theory, total Lagrangian approach is employed formulate elements. rotation functions element boundary obtained from Timoshenko’s beam functions, thus convergence can be ensured theoretically very laminates. linear displacement interpolation standard isoparametric plane in-plane a with drilling degrees freedom taken as displacements RDKQ-NL24, respectively. formulation, free shear-locking, include conventional engineering freedom. Numerical examples demonstrate that they accurate efficient deformation, small
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