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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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|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - 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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