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A 14-node brick element, PN5X1, exactly representing linear stress fields

Bassayya, K and Shrinivasa, U (2000) A 14-node brick element, PN5X1, exactly representing linear stress fields. In: Computers and Structures, 74 (2). pp. 147-165.

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We consider Papcovitch–Neuber (PN) solution to the Navier equation, comprising only the vector potential, and develop a new displacement-based 14-node brick element. We assume PN solution in polynomial form. We impose constraints on unknown coefficients of the polynomials such that the element correctly represents linear stress fields. To validate the performance of the new element which we call PN5X1, we conduct several pathological tests available in the literature. PN5X1 predicts, as anticipated, both stresses and displacements accurately at every point inside the elastic continuum for linear stress fields.

Item Type: Journal Article
Publication: Computers and Structures
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 23 Oct 2008 05:45
Last Modified: 19 Sep 2010 04:51
URI: http://eprints.iisc.ac.in/id/eprint/16264

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