Comparison of Donnell and Higher Order Nonlinear Models for Dynamically Loaded Composite Plates and Shells

by Arthur E. Forral, Air Force Inst of Technology, Dayton, United States,
Anthony N. Palazotto, Air Force Inst of Technology, Dayton, United States,



Document Type: Proceeding Paper

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

Abstract:

The dynamic buckling behavior of composite cylindrical shells subjected to a transverse point load is considered. The behavior of undamped cylindrical shells of varying radii is analyzed with a finite element formulation that incorporates all nonlinear Green's strain terms in the in-plane directions. Comparisons of the higher order finite element models with the modified Donnell formulations are made. Characterizations of the chaotic nature of the post buckled shells are also explored.



Subject Headings: Dynamic loads | Comparative studies | Nonlinear response | Dynamic models | Load factors | Composite materials | Plates | Shell structures

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