Evaluation of Progressive Failure of Composite T-Joint Using Mixed Mode Cohesive Zone Model.

Sane, A. and Peshwe, D.R. and Manjunatha, C.M. and Padole, P.M. and Uddanwadiker, R.V. Evaluation of Progressive Failure of Composite T-Joint Using Mixed Mode Cohesive Zone Model. Transactions of the Indian Institute of Metals, 71 (2). pp. 445-451. ISSN 09722815

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Official URL: https://link.springer.com/article/10.1007/s12666-0...

Abstract

T shaped stiffeners are the most commonly used structures in aerospace components. De-lamination/de-bond initiation followed by its growth is one of the most common reasons for failure in a fiber reinforced composite structure. It is caused by the interlaminar normal and shear stresses between different structural constituents. In a typical structural T-joint, the failure mechanism and location may differ based on the structural design parameters like fillet radius, thickness, layup sequence, filler stiffness, etc. In this study, finite element analysis has been performed using cohesive zone model (CZM) on a composite T-joint to simulate the pull out test conditions. A simplified plane strain model coupled with CZM is proposed, which can evaluate the failure initiation and progression accurately with lesser computational efforts. The final failure occurs at a displacement of 8.04 mm and the computed failure load is 2240 N. The results obtained by the proposed numerical model are validated by experimental results and it is observed that predicted regions of failure, failure displacements and failure load calculated are correlating reasonably well with the experiment.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 03 Jan 2022 14:15
Last Modified: 03 Jan 2022 14:15
URI: http://nal-ir.nal.res.in/id/eprint/13219

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