An Efficient Method For Probabilistic and Robust Design With Non-normal Distributions

Abstract

This paper details a single -level approach for probabilistic and robust design with non -normal distributions. The normal tail transformation is used to find the equivalent means and standard deviations for non -normally distributed variables. Three structural problems including a beam vibration probabilistic design, a cantilevered beam with multiple constraints and a turbine blade robust design are used to ill ustrate the efficiency of the proposed method. The result comparison with the commonly used two -level approaches shows that the single -level approach is much more efficient and robust.

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