The Sensitivity Analysis of Random Variable of Ribbed Cylindrical Shell Based on Strength

Abstract

With all parameters being seemed as random variables with Gaussian distribution,and Latin Hypercube Sampling method being used, the strength of ribbed cylindrical shell is computed based finite element and Monte Carlo Method. By probability sensitivity diagram, scatter diagram and related coefficient, the sensitivity of random variable of ribbed cylindrical shell is analyzed based on the method of random sensitivity analysis. The results show that shell thickness, external pressure, frame spacing and internal radius are more sensitivity than the other variables, so these variables can be treated as sensitivity factors.