Author(s)

G. Falsone & G. Muscolino

Abstract

An equivalent non-linearization approach has been implemented in order to find the response of a beam-stop system subjected to a boundary excitation modelled as a stochastic process. In particular the original bilinear impact force has been replaced by a cubic one, whose coefficients have been evaluated by stochastically minimising the difference between the original and the equivalent systems. The applications have evidenced an optimum level of accuracy, if compared with the results of the classical stochastic linearization approach. 1 Introduction In heat exchangers and nuclear piping systems, baffle plates and snubbers are used to control large amplitude displacements of tubes due to flow induced or seismic excitations. These long tubes or pipes expand or contract for the effect of a temperature change and hence clearances are incorpo

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