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TECHNICAL PAPERS

Dynamic Buckling of Laminated Anisotropic Spherical Caps

[+] Author and Article Information
M. Ganapathi

Institute of Armament Technology, Pune 411 025, India

T. K. Varadan

Department of Aerospace Engineering, Indian Institute of Technology, Madras 600 036, India

J. Appl. Mech 62(1), 13-19 (Mar 01, 1995) (7 pages) doi:10.1115/1.2895879 History: Received March 04, 1992; Revised June 22, 1993; Online October 30, 2007

Abstract

The dynamic axisymmetric behavior of clamped laminated composite spherical caps subjected to suddenly applied loads is investigated using an eight-noded quadrilateral doubly curved shear flexible shell element based on the field-consistency approach. Geometric nonlinearity is considered using von Karman’s strain-displacement relations. The solution is obtained using the Wilson-θ numerical integration scheme. The pressure corresponding to a sudden jump in the maximum average deflection in the time history of the shell structure is taken as dynamic buckling pressure. A detailed parametric study is carried out to bring out the effects of shell geometries and material properties, number of layers, lamination schemes, and type of loading on a dynamic buckling load.

Copyright © 1995 by The American Society of Mechanical Engineers
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