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Cohesive zone modeling of coupled buckling – Debond growth in metallic honeycomb sandwich structure.
- Source :
-
Journal of Sandwich Structures & Materials . Nov2012, Vol. 14 Issue 6, p679-693. 15p. - Publication Year :
- 2012
-
Abstract
- Buckling-induced skin–core debond growth in honeycomb sandwich cantilever beam is demonstrated using a cohesive zone model. The input parameters for the analysis are interfacial bond strength, mode I and mode II interfacial fracture toughness values, obtained from flatwise tension tests, drum-peel tests and three-point end notch flexure tests, respectively. Debonded honeycomb specimens are tested and the acoustic emission technique was used to observe the initiation of the debond growth. The load-displacement response from the cohesive zone model model shows a good agreement with the experimental results. The conventional analysis without cohesive zone model overestimates failure load by 56%. Cohesive zone model is able to predict the coupled debond growth and buckling failure in honeycomb sandwich structures. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 10996362
- Volume :
- 14
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Sandwich Structures & Materials
- Publication Type :
- Academic Journal
- Accession number :
- 83577077
- Full Text :
- https://doi.org/10.1177/1099636212460537