Johnson, A. and Pickett, A. and Rozycki, P. (2001) Computational methods for predicting impact damage in composite structures. Composites Science and Technology, 61, pp. 2183-2192.
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Abstract
This paper describes recent progress on materials modelling and numerical simulation of the impact response of fibre reinforced composite structures. A continuum damage mechanics model for fabric reinforced composites is developed as a framework within which both in-ply and delamination failure may be modelled during impact loading. Damage evolution equations are derived and appropriate materials parameters determined from experiments. The model for in-plane failure has been implemented in a commercial explicit finite element code, and new techniques are used to model the laminate as a stack of shell elements tied via contact interface conditions. This approach allows the interlaminar layers to be modelled and strength reduction due to delamination to be presented; it also provides a computationally efficient method for the analysis of large-scale structural parts. The code is applied to predict the response of carbin fabric reinforced epoxy plates impacted at different velocities by a steel impactor. A comparison of structural response and failure modes from numerical simulations and impact tests is given which shows a good agreement for the prediction of delamination damage at low impact energies and fracture and penetration at higher impact energies.
Item URL in elib: | https://elib.dlr.de/14879/ | ||||||||||||
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Document Type: | Article | ||||||||||||
Additional Information: | LIDO-Berichtsjahr=2002, | ||||||||||||
Title: | Computational methods for predicting impact damage in composite structures | ||||||||||||
Authors: |
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Date: | 2001 | ||||||||||||
Journal or Publication Title: | Composites Science and Technology | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | Yes | ||||||||||||
Volume: | 61 | ||||||||||||
Page Range: | pp. 2183-2192 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | polymer matrix composites, PMC, impact behaviour, computational simulation, damage mechanics, delamination | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||
HGF - Program: | Aeronautics | ||||||||||||
HGF - Program Themes: | other | ||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||
DLR - Program: | L ST - Starrflüglertechnologien | ||||||||||||
DLR - Research theme (Project): | UNSPECIFIED | ||||||||||||
Location: | Stuttgart | ||||||||||||
Institutes and Institutions: | Institute of Structures and Design | ||||||||||||
Deposited By: | DLR-Beauftragter, elib | ||||||||||||
Deposited On: | 16 Sep 2005 | ||||||||||||
Last Modified: | 14 Jan 2010 22:25 |
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