Energy residuals for localization of structural areas inducing hypersensitive behavior

International audienceThis paper describes a method allowing one to localize structural areas inducing hypersensitive vibrating behavior: with a very low calculation cost, the use of energy residual in FEM post processing can be very efficient to detect the zones in which small changes can induce large dispersions on responses. The principle of the method is presented here, including a comparison between some energy residuals, in term of efficiency and localization properties