Failure Analysis of the Stochastic Structural System

Abstract:

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Because there were many random factors, the failure analysis and reliability analysis of stochastic structural system was very difficult. In this paper, failure procedure and reliability analysis flow chart of stochastic structural system based on stochastic finite element were present. Establishment of the safety margin, reduced member stiffness matrix and opposite sign of the equivalent nodal force was analyzed in the failure process. Stochastic finite element method was adopt to solve the structures’ stochastic, and the reliability of structural system is evaluated by PNET method. According to probabilities of the failure paths redound to probability of failure of the structural system, the most significant failure paths was determined on the basis of the branch-and-bound method. Then, a classical 48-bar space truss problem is made as an example to illustrate the predominance of this algorithm, the calculation shows that the analysis of the failure process is justified; this methodology is efficient and useful for reliability analysis of large stochastic structural system.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

223-226

DOI:

10.4028/www.scientific.net/KEM.324-325.223

Citation:

X. C. Yan and Y. Hua, "Failure Analysis of the Stochastic Structural System", Key Engineering Materials, Vols. 324-325, pp. 223-226, 2006

Online since:

November 2006

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Price:

$35.00

[1] DONG Cong: Modern Structural Systems Reliability Theory and Its Applications (Science Press, Beijing 2001).

[2] C.G. BUCHER: A Fast and Efficient Response Surface Approach for Structural Reliability Problems. Structural Safety (1990), 7: 57-66.

DOI: 10.1016/0167-4730(90)90012-e

[3] AN Wei-guang: Structural Systems Reliability and Optimization Design Based on Reliability (National Defence Industry Press, Beijing 1997).

[4] P. Thoft-Christensen, Y. Murotsu: Application of Structural Systems Reliability Theory (Springer-Verlag, Berlin 1986).

DOI: 10.1007/978-3-642-82764-8_1

[5] AN Wei-guang, YAN Xin-chi, CAI Yin-lin: Optimum Design for Structural Systems with Many Random Factors. Journal of Harbin Engineering University (2002), 23(2): 118-121.

[6] CHEN Wei-dong, ZHANG Tie-jun, and LIU Yuan-chun: Efficient Method for Identifying the Dominant Failure Paths. Journal of Harbin Engineering University (2005).

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