Finite element analysis of low-velocity impact damage in composite laminates

Pradhan, B and Kumar, Sanjay (2000) Finite element analysis of low-velocity impact damage in composite laminates. Journal of Reinforced Plastics and Composites, 19 (4). pp. 322-339.

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This paper investigates the low-velocity impact behaviour and impact-induced damages in graphite/epoxy composite laminates. A three-dimensional finite element and transient dynamic analysis is performed to calculate the time-varying displacements, forces, strains and stresses throughout the laminate resulting from transverse impact. A layered version of an eight-noded isoparametric brick element with incompatible modes is used to model the laminate. Transient dynamic equilibrium equation is integrated step-by-step with respect to time using Newmark direct time integration method. Modified Hertzian contact law is used to model the local contact behaviour. Appropriate three-dimensional failure criteria are used for predicting the occurrence of matrix cracking and the extent of delamination after impact.

Item Type:Article
Official URL/DOI:DOI: 10.1106/7B1E-1A7K-RTBP-VXVR
Uncontrolled Keywords:composite laminates; impact; finite element analysis; damage; matrix cracking; delamination
Divisions:Metal Extraction and Forming
ID Code:3482
Deposited On:22 Jul 2011 10:48
Last Modified:08 Feb 2012 11:54
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