Load capacity probabilistic sensitivity analysis of thin walled beams

The paper deals with the load-carrying capacity stochastic variance based sensitivity analysis of thin-walled box-section girders subjected to pure bending. The lower- and upper-bound load-capacity estimation is performed where the methodology is based on the Monte-Carlo method. The sample results obtained are presented in diagrams and pie charts showing the sensitivity of load-capacity to different random input variables. The analysis is focused on the variance of geometrical parameters (dimensions). Some final conclusions concerning the efficiency of the applied models and the sensitivity analysis are derived.