Non-linear analysis of structures using high performance hybrid elements

Jog, CS and Kelkar, PP (2006) Non-linear analysis of structures using high performance hybrid elements. In: International Journal for Numerical Methods in Engineering, 68 (4). pp. 473-501.

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Abstract

In this work, we describe the formulation and implementation for stress-based hybrid elements for conducting non-linear analysis of elastic structures. The motivation behind developing these elements is that they should be as simple to use as standard displacement-based isoparametric brick elements, but at the same time, be relatively immune to the shortcoming that these elements suffer from, namely, ‘locking’ problems which occur when they are used to model plate/shell geometries, almost incompressible materials or when the elements are distorted, and so on. The formulation is based on a two-field mixed variational principle. Numerical examples are presented to demonstrate the excellent performance of the proposed elements on a variety of challenging problems involving very large deformations, buckling, mesh distortions, almost incompressible materials, etc.

Item Type:	Journal Article
Publication:	International Journal for Numerical Methods in Engineering
Publisher:	John Wiley & Sons, Ltd.
Additional Information:	Copyright of this article belongs to John Wiley & Sons, Ltd.
Keywords:	Non-linear analysis;Hybrid elements
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	23 Nov 2006
Last Modified:	19 Sep 2010 04:32
URI:	http://eprints.iisc.ac.in/id/eprint/8975

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