Reliability prediction in fluid-structure interaction problems

Resumo

The understanding of the mechanical interaction between a fluid and an elastic solid has a capital importance in several industrial applications. In order to couple the behaviour of two different media, deterministic models have been proposed. However, stochastic analysis has been developed to deal with the statistical nature of fluid-structure interaction parameters. Moreover, probabilistic-based reliability analysis intends to find safe and cost-effective projects. In this work, it is presented a deterministic, stochastic and reliability analyses through numerical simulations in 2- D and 3-D dynamic fluid-structure interaction problems. The perturbation methods allied to reliability analysis are applied to fluid-structure finite element models. Reliability analysis couples finite element analysis with first and second order reliability methods and Ant Colony Optimization. The results tend to confirm the potential of this methodology. © 2007 Civil-Comp Press.

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