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Numerical simulation based on fuzzy stochastic analysis

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In this paper mathematical methods for fuzzy stochastic analysis in engineering applications are presented. Fuzzy stochastic analysis maps uncertain input data in the form of fuzzy random variables onto fuzzy random result variables. The operator of the mapping can be any desired deterministic algorithm, e.g. the dynamic analysis of structures. Two different approaches for processing the fuzzy random input data are discussed. For these purposes two types of fuzzy probability distribution functions for describing fuzzy random variables are introduced. On the basis of these two types of fuzzy probability distribution functions two appropriate algorithms for fuzzy stochastic analysis are developed. Both algorithms are demonstrated and compared by way of an example.

Keywords: Fuzzy probability; Fuzzy random variable; Structural analysis; Uncertainty

Document Type: Research Article


Affiliations: Institute of Statics and Dynamics of Structures, Technische Universität Dresden, Germany

Publication date: August 1, 2007


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