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A Statistical Procedure for Increasing Structural Efficiency
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English
Abstract
This paper presents a statistical procedure for expressing factors or margins of safety in terms of failure probabilities. The procedure involves identifying the basic variables in a structural or stress analysis and evaluating the statistical measurements of these variables in terms of mean, standard deviations and variances. An approximate rule of statistical algebra is then applied to obtain the relationship between margins of safety and failure probabilities. The present paper is restricted to variables that exhibit a normal probability distribution. A discussion is given on the advantages and limitations of the present statistical approach and an example is used to illustrate the calculation procedure.
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Citation
Tsang, S., "A Statistical Procedure for Increasing Structural Efficiency," SAE Technical Paper 922037, 1992, https://doi.org/10.4271/922037.Also In
References
- Tsang S.K. “Collapse of Ring-Stiffened Cylindrical Shells under Combined External Pressure and Axial Compression” University of London 1985
- Tsang S.K. Harding J.E. “A Mechanism Approach for the Prediction of the Collapse Strength of Ring-Stiffened Cylinders under Axial Compression and External Pressure” International Journal of Thin-Walled Structures 2 4 Dec. 1984 325 353
- Brush D.O. Almroth B.O. “Buckling of Bars, Plates and Shells” McGraw-Hill 1975