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Damage and its growth in laminated composite circular/rectangular plates undergoing large deformations

Ganapathy, S and Tripathy, Biswajit and Rao, KP (1995) Damage and its growth in laminated composite circular/rectangular plates undergoing large deformations. In: Eighth International Conference on Composite Structures (ICCS/8), Sept. 1995, Paisley, UK, pp. 367-373.

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A nonlinear finite element static analysis is used to predict the damage in rectangular/circular plates due to large deformation simulating low-velocity impact. The impact due to the ball impactor is modelled by an equivalent static load and load distribution is taken according to Hertzian law. Tsai-Wu criterion is used to predict the failure of each ply at Gauss points. The failure mode (fibre breakage or matrix cracking) is identified using maximum stress criterion. The material properties at each failed Gauss point is degraded appropriately and the stress analysis is carried out again. This iterative process is repeated until no further damage condition occurs. Numerical examples for both circular and rectangular composite plates are presented

Item Type: Conference Paper
Publisher: Elsevier Science Ltd.
Additional Information: Copyright of this article belongs to Elsevier Science Ltd.
Keywords: Deformation;Crack propagation;Structural analysis;Finite element method;Computer simulation;Mathematical models;Failure (mechanical);Stresses;Stress analysis;Iterative methods
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 19 Sep 2007
Last Modified: 19 Sep 2010 04:38
URI: http://eprints.iisc.ac.in/id/eprint/10957

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