Analysis of composite single lap joints using numerical and experimental approach

Vijaya kumar, RL and Bhat, MR and Murthy, CRL (2014) Analysis of composite single lap joints using numerical and experimental approach. In: JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, 28 (10). pp. 893-914.

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Abstract

Adhesives are widely used to execute the assembly of aerospace and automotive structures due to their ability to join dissimilar materials, reduced stress concentration, and improved fatigue resistance. The mechanical behavior of adhesive joints can be studied either using analytical models or by conducting mechanical tests. However, the complexity owing to multiple interfaces, layers with different properties, material and geometric nonlinearity and its three-dimensional nature combine to increase the difficulty in obtaining an overall system of governing equations to predict the joint behavior. On the other hand, experiments are often time consuming and expensive due to a number of parameters involved. Finite element analysis (FEA) is profoundly used in recent years to overcome these limitations. The work presented in this paper involves the finite element modeling and analysis of a composite single lap joint where the adhesive-adherend interface region was modeled using connector elements. The computed stresses were compared with the experimental stresses obtained using digital image correlation technique. The results showed an agreement. Further, the failure load predicted using FEA was found to be closer to the actual failure load obtained by mechanical tests.

Item Type:	Journal Article
Publication:	JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
Publisher:	TAYLOR & FRANCIS LTD
Additional Information:	copyright for this article belongs to TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
Keywords:	digital image correlation; adhesive joints; finite element analysis; composites
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	27 May 2014 07:46
Last Modified:	27 May 2014 09:14
URI:	http://eprints.iisc.ac.in/id/eprint/49011

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