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Large deformation dynamic finite element analysis of delaminated composite plates using contact-impact conditions

Chandrashekhar, M and Ganguli, Ranjan (2014) Large deformation dynamic finite element analysis of delaminated composite plates using contact-impact conditions. In: COMPUTERS & STRUCTURES, 144 . pp. 92-102.

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Official URL: http://dx.doi.org/ 10.1016/j.compstruc.2014.07.025

Abstract

A new C-0 composite plate finite element based on Reddy's third order theory is used for large deformation dynamic analysis of delaminated composite plates. The inter-laminar contact is modeled with an augmented Lagrangian approach. Numerical results show that the widely used ``unconditionally stable'' beta-Newmark method presents instability problems in the transient simulation of delaminated composite plate structures with large deformation. To overcome this instability issue, an energy and momentum conserving composite implicit time integration scheme presented by Bathe and Baig is used. It is found that a proper selection of the penalty parameter is very crucial in the contact simulation. (C) 2014 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
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Additional Information: Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Keywords: Nonlinear response; Finite element method; Composite plates; Delamination; Contact-impact; Augmented Lagrangian formulation
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 04 Dec 2014 04:47
Last Modified: 04 Dec 2014 04:47
URI: http://eprints.iisc.ernet.in/id/eprint/50358

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