Analyzing the dynamic response of a rotor system under uncertain parameters by Polynomial Chaos ExpansionReport as inadecuate




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1 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes 2 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures Villeurbanne

Abstract : In this paper, the quantification of uncertainty effects on response variability in rotor systems is investigated. To avoid the use of Monte Carlo simulation MCS, one of the most straightforward but computationally expensive tools, an alternative procedure is proposed. MCS builds statistics from responses obtained from sampling uncertain inputs by using a large number of runs. However, the method proposed here is based on the stochastic finite element method using polynomial chaos expansion. The efficiency and robustness of the method proposed is demonstrated through different numerical simulations in order to analyse the random response against uncertain parameters and random excitation to assess its accuracy and calculation time.

Mots-clés : dynamique des structures incertitudes rotor





Author: Jérome Didier - Béatrice Faverjon - Jean-Jacques Sinou -

Source: https://hal.archives-ouvertes.fr/



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