Journal Published Online: 01 September 1985
Volume 7, Issue 3

The Effect of Slots on the Buckling and Postbuckling Behavior of Laminated Plates



An experimental study was conducted to evaluate the effect of lateral slots on the buckling response, the postbuckling response, and the failure characteristics of flat rectangular graphite-epoxy plates loaded in compression. The slots did not significantly affect the prebuckling and buckling behavior of the plates. The slots caused local changes in the strain distribution and out-of-plane deformations near the slot. Failure loads and modes were strongly affected by slot location. Centrally located slots did not affect the failure loads or failure modes of the plates. Slots located close to an unloaded edge of a plate reduced the postbuckling strength of the plate and affected the failure mode. For one slightly offset slot location, interaction of out-of-plane deformations with the slot tip was observed to affect the failure mode significantly without affecting the failure load.

Author Information

Gürdal, Z
Virginia Polytechnic Institute and State University, Blacksburg, VA
Haftka, RT
Virginia Polytechnic Institute and State University, Blacksburg, VA
Starnes, JH
Structural Mechanics Branch, NASA Langley Research Center, Hampton, VA
Pages: 6
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Stock #: CTR10302J
ISSN: 0884-6804
DOI: 10.1520/CTR10302J