Higher-Order Beam Theories for Mode II Fracture of Unidirectional Composites

Kumar, Pavan DVTG and Prasad, Raghu BK (2003) Higher-Order Beam Theories for Mode II Fracture of Unidirectional Composites. In: Journal of Applied Mechanics, 70 (6). pp. 840-852.

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Abstract

Mathematical models, for the stress analyses of unidirectional end notch flexure and end notch cantilever specimens using classical beam theory, first, second, and third-order shear deformation beam theories, have been developed to determine the interlaminar fracture toughness of unidirectional composites in mode II. In the present study, appropriate matching conditions, in terms of generalized displacements and stress resultants, have been derived and applied at the crack tip by enforcing the displacement continuity at the crack tip in conjunction with the variational equation. Strain energy release rate has been calculated using compliance approach. The compliance and strain energy release rate obtained from present formulations have been compared with the existing experimental, analytical, and finite element results and found that results from third-order shear deformation beam theory are in close agreement with the existing experimental and finite element results.

Item Type:	Journal Article
Publication:	Journal of Applied Mechanics
Publisher:	American Society of Mechanical Engineers
Additional Information:	Copyright of this article belongs to American Society of Mechanical Engineers.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	06 Feb 2007
Last Modified:	19 Sep 2010 04:34
URI:	http://eprints.iisc.ac.in/id/eprint/9671

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