Article (Scientific journals)
An overview of nonintrusive characterization, propagation, and sensitivity analysis of uncertainties in computational mechanics
Arnst, Maarten; Ponthot, Jean-Philippe
2014In International Journal for Uncertainty Quantification, 4, p. 387-421
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Keywords :
uncertainty quantification; stochastic modeling; representation of uncertainty; Monte Carlo; polynomial chaos; stochastic response surface method; stochastic sensitivity analysis
Abstract :
[en] In this paper, we offer a short overview of a number of methods that have been reported in the computational-mechanics literature for quantifying uncertainties in engineering applications. Within a probabilistic framework, we describe the characterization of uncertainties using mathematical statistics methods, the propagation of uncertainties through computational models using either Monte Carlo sampling or stochastic expansion methods, and the sensitivity analysis of uncertainties using variance- and differentiation-based methods. We restrict our attention to nonintrusive methods that can be implemented as wrappers around existing computer programs, thus requiring no modification of the source code. We include some recent advances in the propagation and sensitivity analysis of uncertainties that are characterized by arbitrary probability distributions that may exhibit statistical dependence. Finally, we demonstrate the methods integrated in the proposed overview through a nonlinear engineering application relevant to metal forming.
Disciplines :
Mechanical engineering
Author, co-author :
Arnst, Maarten ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational and stochastic modeling
Ponthot, Jean-Philippe  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
An overview of nonintrusive characterization, propagation, and sensitivity analysis of uncertainties in computational mechanics
Publication date :
2014
Journal title :
International Journal for Uncertainty Quantification
ISSN :
2152-5080
eISSN :
2152-5099
Publisher :
Begell House
Volume :
4
Pages :
387-421
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 13 September 2013

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