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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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.
|Title:||Efficient prediction of damage resistance and tolerance of composite aerospace structures|
|Journal or Publication Title:||Journal of Aerospace Engineering|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 179-188|
|Publisher:||Professional Engineering Publishing|
|Series Name:||Proceedings of the Institution of Mechanical Engineers|
|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|
|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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