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Influence of delamination on impact damage in composite structures

Johnson, Alastair and Holzapfel, Martin (2006) Influence of delamination on impact damage in composite structures. Composites Science and Technology, 66, pp. 807-815.

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Abstract

This paper describes recent progress on materials modelling and numerical simulation of fibre reinforced composite shell structures subjected to high velocity impacts. A Continuum Damage Mechanics (CDM) model for fabric reinforced composites is applied to model both in-ply damage and delamination failure during impact loading. The CDM model has been implemented in a commercial explicit finite element (FE) code in which a laminate is modelled by stacked shell elements with tied interfaces. Delamination failure is modelled by allowing the interfaces to damage and fracture when a delamination failure energy criterion is reached. The code is applied to predict the response of composite shells subjected to gas gun impact tests by a steel impactor under a range of test conditions. A comparison of structural response and failure modes from numerical simulations and impact tests shows good agreement for the prediction of delamination damage and shell penetration at higher impact energies.

Document Type:Article
Title:Influence of delamination on impact damage in composite structures
Authors:
AuthorsInstitution or Email of Authors
Johnson, AlastairUNSPECIFIED
Holzapfel, MartinUNSPECIFIED
Date:2006
Journal or Publication Title:Composites Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:66
Page Range:pp. 807-815
Status:Published
Keywords:polymer composites, impact behaviour, damage mechanics, delamination, impact mechanics
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Robust Rotorcraft
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Dr.phil. Alastair Johnson
Deposited On:28 Dec 2006
Last Modified:27 Apr 2009 04:46

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