Finite-Element Analysis of Cylindrical Panels with Random Initial Imperfections
Publication: Journal of Engineering Mechanics
Volume 130, Issue 8
Abstract
Stochastic finite-element analysis of shells is performed using the spectral representation method for the description of the random fields in conjunction with the local average method for the formulation of the stochastic stiffness matrix of the elements. A stochastic formulation of the nonlinear triangular composites facet triangular shell element is implemented for the stability analysis of cylindrical panels with random initial imperfections. The imperfections are described as a two-dimensional univariate homogeneous stochastic field. The elastic modulus and the shell thickness are also described as two-dimensional uni-variate homogeneous stochastic fields. The variability of the limit load of the cylindrical panel is then computed using the Monte Carlo simulation. Useful conclusions for the buckling behavior of cylindrical panels with random initial imperfections are derived from the numerical tests presented in this paper. These tests also demonstrate the applicability of the proposed methodology in realistic problems.
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Published In
Journal of Engineering Mechanics
Volume 130 • Issue 8 • August 2004
Pages: 867 - 876
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Feb 20, 2002
Accepted: Jun 2, 2003
Published online: Jul 15, 2004
Published in print: Aug 2004
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