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A novel method for fatigue delamination simulation in composite laminates.
- Source :
-
Composites Science & Technology . May2016, Vol. 128, p104-115. 12p. - Publication Year :
- 2016
-
Abstract
- This paper presents a FEM model for the simulation of delamination in composite materials under fatigue loads using extended cohesive interface elements. A virtual fatigue damage variable is proposed to continually locate the crack tip elements with local element information only. The proposed method allows for a fully automatic identification of crack tip elements without any global information. Once crack tip elements are identified, the fatigue damage accumulation is determined by a modified Paris-law with a strain energy release rate correction method to reduce mesh sensitivity. The predicted delamination growth rates of different mesh sizes were compared with experimental results from open literature using a mode-I Double Cantilever Beam specimen and a mode-II 4-point End Notch Flexure specimen respectively. In all cases good agreement was obtained with weak mesh dependency. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02663538
- Volume :
- 128
- Database :
- Academic Search Index
- Journal :
- Composites Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 116187944
- Full Text :
- https://doi.org/10.1016/j.compscitech.2016.03.016