Simulation of Low-velocity Impact Damage in Layered Composites using a Cohesive-based Finite Element Technique

Kubair, Dhirendra V (2004) Simulation of Low-velocity Impact Damage in Layered Composites using a Cohesive-based Finite Element Technique. In: Defence Science Journal, 54 (4). pp. 571-578.

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Abstract

The mechanism of damage initiation and growth in layered composites subjected to low- velocity impact is simulated using a cohesive-based finite element technique. The numerical technique used comprises cohesive elements sandwiched between the regular finite elements. The basic structure of the formulation is presented, followed by the results of the simulation. The success of this numerical technique is dependent on the cohesive model used. The cohesive model is a thermodynamically-based phenomenological model, describing the damage ahead of a crack tip. Details of the rate-independent cohesive model used in this study are also presented.

Item Type:	Journal Article
Publication:	Defence Science Journal
Publisher:	Defence Scientific Information Documentation Centre
Additional Information:	The copyright for this article belongs to Defence Scientific Information Documentation Centre.
Keywords:	Low-velocity impact;cohesive-based finite element technique;composites;composite laminates;simulation;impact-induced delamination;transverse matrix cracks;traction- separation relation;critical matrix cracks
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	15 Apr 2005
Last Modified:	20 Jan 2012 09:25
URI:	http://eprints.iisc.ac.in/id/eprint/3028

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