Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 70, Issue 8, Pages 1288-1300Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2010.04.006
Keywords
Layered structures; Delamination; Buckling; Damage mechanics; Finite element analysis
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Funding
- European Community [FP7/2007-2013, 213371-MAAXIMUS]
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Numerical procedures based on the combined use of the Virtual Crack Closure Technique and of a fail release approach have been widely used to simulate delamination growth phenomena of composite material structures. This paper starts explaining why this kind of methodologies might not be robust due to mesh and load step size dependency and introduces a novel approach able to cope with the problems identified. Finally the effectiveness and robustness of the proposed procedure, implemented into a commercial finite element software by means of user subroutines, are assessed by comparing the obtained numerical results for a delamination growth phenomenon against literature experimental data on a stiffened panel with a circular embedded delamination under compressive load. (C) 2010 Elsevier Ltd. All rights reserved.
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