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IMPROVEMENT OF THREE‐DIMENSIONAL HYBRID HEXAHEDRAL ELEMENTS BY USING ORTHOGONAL APPROACH

WANJI CHEN (The Research Institute of Engineering Mechanics, Dalian University of Technology, Dalian, People's Republic of China)
Y.K. CHEUNG (Department of Civil and Structural Engineering, University of Hong Kong, Hong Kong)

Engineering Computations

ISSN: 0264-4401

Article publication date: 1 March 1991

Abstract

Based on the orthogonal approach for hybrid element methods, refined three‐dimensional isoparametric hybrid hexahedral elements have been developed. The behaviour of the proposed models are discussed in respect of coordinate invariance, spurious zero energy modes and the ability to pass the patch test. By adopting the orthogonality of strain energy, the element stiffness matrix can be decomposed into a series of stiffness matrices in which the implementational effectiveness can be improved. A number of examples is used to demonstrate the implementation efficiency, accuracy and distortion insensitivity of the proposed elements, and its capacity of handling nearly incompressible materials

Keywords

Citation

CHEN, W. and CHEUNG, Y.K. (1991), "IMPROVEMENT OF THREE‐DIMENSIONAL HYBRID HEXAHEDRAL ELEMENTS BY USING ORTHOGONAL APPROACH", Engineering Computations, Vol. 8 No. 3, pp. 257-271. https://doi.org/10.1108/eb023838

Publisher

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MCB UP Ltd

Copyright © 1991, MCB UP Limited