Effects of local asymmetry on the buckling and postbuckling of composite laminates with a delamination
- Kyushu Univ., Kasuga, Fukuoka (Japan). Research Inst. for Applied Mechanics
In this paper, buckling and postbuckling of composite laminates with delaminations are studied by numerical analysis. Embedded delaminations are a kind of damage being frequently observed in composite laminates and may significantly reduce the load carrying capacity due to the buckling of sublamination and the propagation of delamination. A three dimensional nonlinear finite element program is developed to simulate the above mentioned problem. A special attention is given to the effects of the local asymmetry due to delamination on the behavior of buckling and postbuckling of the laminate under compressive load. Analytical results show the obvious difference between the critical loads obtained from the present analysis and those from the two dimensional finite element analysis which cannot consider the effects of the local asymmetry.
- OSTI ID:
- 485093
- Report Number(s):
- CONF-970146--; ISBN 1-890277-03-7
- Country of Publication:
- United States
- Language:
- English
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