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Efficient prediction of damage resistance and tolerance of composite aerospace structures

Baaran, Jens and Kärger, Luise and Wetzel, Anja (2007) Efficient prediction of damage resistance and tolerance of composite aerospace structures. Journal of Aerospace Engineering, 222 (G2), pp. 179-188. Professional Engineering Publishing. DOI: 10.1243/09544100JAERO278. ISSN 0954-4100.

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Official URL: http://journals.pepublishing.com/content/k2560h062811782l/

Abstract

The present work introduces efficient methodologies based on the finite-element method for a quick evaluation of damage resistance and damage tolerance of composite aerospace structures. Monolithic, stringer-stiffened structures, and sandwich structures are considered. The presented methodologies cover the simulation of the dynamic response of a structure during a low velocity impact event including the prediction of the internal non-visible or barely visible damage that develops during the impact. Additionally, methods for the prediction of the compression-after-impact strength are presented. In order to permit an accurate and efficient calculation of deformations and stresses in sandwich structures, special finite-element formulations have been developed. A comparison of simulation results with experimental data is presented for a two-stringer monolithic panel and for a honeycomb sandwich plate. The examples demonstrate that the presented methodologies can be used to quickly assess the damage tolerance of composite structures.

Document Type:Article
Title: Efficient prediction of damage resistance and tolerance of composite aerospace structures
Authors:
AuthorsInstitution or Email of Authors
Baaran, JensUNSPECIFIED
Kärger, LuiseUNSPECIFIED
Wetzel, AnjaUNSPECIFIED
Date:August 2007
Journal or Publication Title:Journal of Aerospace Engineering
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:222
DOI:10.1243/09544100JAERO278
Page Range:pp. 179-188
Editors:
EditorsEmail
Martinez-Val, RodrigoUNSPECIFIED
Publisher:Professional Engineering Publishing
Series Name:Proceedings of the Institution of Mechanical Engineers
ISSN:0954-4100
Status:Published
Keywords:composite, damage, impact, residual strength
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):L - Structures & Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Doris Ries
Deposited On:09 May 2008
Last Modified:14 Jan 2010 23:31

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