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Stochastic modeling and identification of an uncertain computational dynamical model with random fields properties and model uncertainties
Abstract : This paper is devoted to the construction and to the identification of a probabilistic model of random fields in presence of modeling errors, in high stochastic dimension and presented in the context of computational structural dynamics. Due to the high stochastic dimension of the random quantities which have to be identified using statistical inverse methods (challenging problem), a complete methodology is proposed and validated. The parametric-nonparametric (generalized) probabilistic approach of uncertainties is used to perform the prior stochastic models: (1) system-parameters uncertainties induced by the variabilities of the material properties are described by random fields for which their statistical reductions are still in high stochastic dimension and (2) model uncertainties induced by the modeling errors are taken into account with the nonparametric probabilistic approach in high stochastic dimension. The steps of the methodology are explained and illustrated through an application.
Cited literature [40 references]
https://hal-upec-upem.archives-ouvertes.fr/hal-00759467
Contributor : Christian Soize Connect in order to contact the contributor
Submitted on : Friday, November 30, 2012 - 4:47:21 PM
Last modification on : Wednesday, February 17, 2021 - 10:42:04 AM
Long-term archiving on: : Saturday, December 17, 2016 - 6:35:24 PM
Contributor : Christian Soize Connect in order to contact the contributor
Submitted on : Friday, November 30, 2012 - 4:47:21 PM
Last modification on : Wednesday, February 17, 2021 - 10:42:04 AM
Long-term archiving on: : Saturday, December 17, 2016 - 6:35:24 PM
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