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Snap Buckling of a Delaminated Layer in a Composite Cylinder

by Wan-Lee Yin, Georgia Inst of Technology, Atlanta, United States,



Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space IV

Abstract:

We investigate snap buckling of a thin delaminated layer on the inner surface of a contracting thick cylinder. Finite-deflection solutions of the layer with or without considering the transverse shear effect may be obtained in closed analytical forms. Inclusion of the shear effect results in a larger deflection at the midpoint, but affects insignificantly the strain energy release rate associated with delamination growth. In contrast, approximate solutions based on the small-deflection assumption of the shallow arch theory may substantially underestimate the strain energy release rate, even though such solutions yield displacements that are in close agreement with the finite-deflection solutions which ignore the transverse shear effect.

Subject Headings: Cylinders | Composite structures | Buckling | Transverse shear | Delaminating | Structural analysis | Strain rates

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