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Type: Artigo de periódico
Title: Stochastic analysis of a cracked rod modeled via the spectral element method
Author: Fabro, AT
Ritto, TG
Sampaio, R
Arruda, JRF
Abstract: The spectral element method is used to model a cracked rod, where the crack is modeled as a localized flexibility. The crack flexibility is derived using Castigliano's theorem, and the uncertainties are modeled by the parametric probabilistic approach. The probabilistic model is constructed directly for the variable of interest, i.e., the crack flexibility. Two different probabilistic models, where the probability density functions are constructed using the Maximum Entropy Principle, are used and compared. It is shown that the model with more uncertainty is the one constructed with less information. Monte Carlo simulations are performed in order to estimate the frequency response function envelopes. (C) 2010 Elsevier Ltd. All rights reserved.
Subject: Wave propagation
Uncertainty quantification
Stochastic analysis
Spectral element method
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Citation: Mechanics Research Communications. Pergamon-elsevier Science Ltd, v. 37, n. 3, n. 326, n. 331, 2010.
Rights: fechado
Identifier DOI: 10.1016/j.mechrescom.2010.03.005
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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