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Evolutionary Topology Optimization for Fluid-structure Interaction Problems and Natural Frequency Maximization

Picelli, R.; Vicente, W. M.; Pavanello, R.;

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Multiphysics systems including dynamic fluid-structure interaction problems have hardly been studied in several fields of mechanical engineering. Among others, we can cite the researches in vibrations of submerged structures and the design of poroacoustic absorbing systems. Structural Topology Optimization can be applied in this class of problems in order to obtain new materials and structures. In this paper, it is presented the topology optimization based on volume constraints and natural frequency maximization of fluid-structure interaction problems. The method used in this work is the Bi-directional Evolutionary Structural Optimization (BESO), which consists in a successive elimination and replacement of elements in the design domain. This domain is defined initially and through a sensitivity analysis of the structure’s eigenvalue solution, the evolutionary algorithm remove or add solid elements. The aim of this work is to propose a new version of the BESO method applied to fluid-structure interaction systems. We consider the case of free vibration of structures attached to a fixed fluid domain. Numerical results show that the BESO method can be applied to this kind of multiphysics problem.

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Palavras-chave: Fluid-structure interaction, Topology Optimization, BESO method.,

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DOI: 10.5151/meceng-wccm2012-16801

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Como citar:

Picelli, R.; Vicente, W. M.; Pavanello, R.; "Evolutionary Topology Optimization for Fluid-structure Interaction Problems and Natural Frequency Maximization", p. 423-437 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-16801

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