B1121
Title: Statistical approaches to sensitivity analysis in structural mechanics
Authors: Javier Cara - Universidad Politecnica de Madrid (Spain) [presenting]
Camino Gonzalez - Universidad Politécnica de Madrid (Spain) (Spain)
Jose Mira - Universidad Politecnica de Madrid (Spain)
Abstract: The applications of sensitivity analysis in structural mechanics are numerous: inverse analysis, numerical optimization, reliability analysis, modal identification,... Probably the most recent problem is the so-called Finite Element Model Updating, where researchers and engineers try to adjust certain parameters of a mathematical model of a real structure (bridges, buildings,..) taking into account the values recorded using sensors. These mathematical models (obtained using the finite element method) sometimes have thousands of variables, so it is very difficult to perform sensitivity analysis analytically, and many numerical methods have been used instead. In this sense, the performance in this kind of problems of statistical methods such as analysis of variance, linear regression and tree-based methods is analysed.
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