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Validation of a fabric model for crash simulations of composite structures

Kohlgrüber, D. (2003) Validation of a fabric model for crash simulations of composite structures. In: Advanced Composites: The Balance Between Performance and Cost (Proceedings of the 24th International SAMPE Europe conference of the Society for the Advancement of Materials and Process Engineering, Paris 2003), 1, pp. 413-422. Page Bros, Norwich, UK. 24th International SAMPE Europe conference of the Society for the Advancement of Materials and Process Engineering, Paris EXPO, Porte de Versailles, Paris, Frankreich, 1-3 April 2003. ISBN 3-9522677-0-8.

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Abstract

The paper describes recent progress in DLR's research on the analysis of the crash behaviour of composite energy absorbing structures. Latest developments and verifications of a material model to simulate the crash behaviour of structures made of composite fabric plies with the explicit FE-code PAM-CRASH will be presented. Basic material properties of two different fabric materials are summarised which are used to generate the input data for the new fabric material model. With this material model verification analyses are performed starting on single element and specimen level which showed a good agreement to the corresponding test results. In a final step, simulations on hybrid trapezoidal beams which were crash tested under complex loading conditions are presented. In this study two of the beams were tested with a partial overlap of the specimen and impactors of different shapes, while a third one was tested on an inclined surface of 20° in the longitudinal direction. The forth test was performed on a specimen with two circular holes in the web area to investigate the evolution of damage and failure. In general, a very good correlation between the test results and the simulations with the improved fabric material model was found.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2003,
Title:Validation of a fabric model for crash simulations of composite structures
Authors:
AuthorsInstitution or Email of Authors
Kohlgrüber, D.UNSPECIFIED
Date:2003
Journal or Publication Title:Advanced Composites: The Balance Between Performance and Cost (Proceedings of the 24th International SAMPE Europe conference of the Society for the Advancement of Materials and Process Engineering, Paris 2003)
Volume:1
Page Range:pp. 413-422
Editors:
EditorsEmail
SAMPE Europe, UNSPECIFIED
Publisher:Page Bros, Norwich, UK
Series Name:International SAMPE Europe conference of the Society for the Advancement of Materials and Process Engineering
ISBN:3-9522677-0-8
Status:Published
Keywords:simulation, finite element, FE, crash, model, structural analysis
Event Title:24th International SAMPE Europe conference of the Society for the Advancement of Materials and Process Engineering, Paris EXPO, Porte de Versailles, Paris, Frankreich, 1-3 April 2003
Organizer:SAMPE Europe & the Society for the Advancement of Materials and Process Engineering
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):UNSPECIFIED
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 22:34

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