Reliability-Based Structural Optimization of Stochastic Structure Systems Considering Stability

Abstract:

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The problem of failure mode analysis of stochastic structural systems, dealing with the design variables expression, reliability-based structural optimization and improved stability of girders, have been studied in this paper. Considering the material intensity, girder section area, panel thickness and loads as stochastic variables, a mathematical model of optimization is constructed. In the iterative procedure, the optimum vector method was adopted to optimize the object and the gradient step; and the optimum vector step have been used alternatively, and these can speed up the iterative procedure. The calculation of a numerical example shows this method is exact and free from the selection of optimum start point, further more the convergence is stable and fast.

Info:

Periodical:

Key Engineering Materials (Volumes 385-387)

Edited by:

H.S. Lee, I.S. Yoon and M.H. Aliabadi

Pages:

261-264

DOI:

10.4028/www.scientific.net/KEM.385-387.261

Citation:

X. C. Yan "Reliability-Based Structural Optimization of Stochastic Structure Systems Considering Stability", Key Engineering Materials, Vols. 385-387, pp. 261-264, 2008

Online since:

July 2008

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Price:

$35.00

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