IMPROVEMENT OF THREEDIMENSIONAL HYBRID HEXAHEDRAL ELEMENTS BY USING ORTHOGONAL APPROACH

IMPROVEMENT OF THREEDIMENSIONAL HYBRID HEXAHEDRAL ELEMENTS BY USING ORTHOGONAL APPROACH Based on the orthogonal approach for hybrid element methods, refined threedimensional 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Engineering Computations Emerald Publishing

IMPROVEMENT OF THREEDIMENSIONAL HYBRID HEXAHEDRAL ELEMENTS BY USING ORTHOGONAL APPROACH

Engineering Computations, Volume 8 (3): 15 – Mar 1, 1991

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0264-4401
DOI
10.1108/eb023838
Publisher site
See Article on Publisher Site

Abstract

Based on the orthogonal approach for hybrid element methods, refined threedimensional 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

Journal

Engineering ComputationsEmerald Publishing

Published: Mar 1, 1991

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