Topology optimization of frequency responses of fluid-structure interaction systems

Autor(es)

Vicente, W. M. ^{[1, 2]} ; Picelli, R. ^[2] ; Pavanello, R. ^[2] ; Xie, Y. M. ^[1]

Afiliação do(s) autor(es)

^[1] RMIT Univ, Sch Civil Environm & Chem Engn, Ctr Innovat Struct & Mat, Melbourne, Vic 3001 - Australia

^[2] Univ Estadual Campinas, Fac Mech Engn, Dept Computat Mech, BR-13083860 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FINITE ELEMENTS IN ANALYSIS AND DESIGN; v. 98, p. 1-13, JUN 2015.
• Citações Web of Science: 30

Resumo

This paper presents a topology optimization method for the frequency response of a multiphysics system involving fluid-structure interaction. The Unite element analysis of the system is carried out based on the u(s)/p(s) formulation. The structural domain is governed by the linear equation of elasticity and expressed in terms of the displacement, u(s) and the fluid domain is described by Helmholtz equation via the primary variable of pressure, p(f). The coupling conditions are the equilibrium and kinematic compatibilities at the fluid-structure interface. The optimization procedure used in this work is based on the bi-directional evolutionary structural optimization (BESO). Due to the binary characteristics of the BESO method of adding/removing material, the methodology proposed here circumvents some problems faced by the traditional density based optimization methods, especially concerning the fluid-structure interface during the optimization process. The proposed methodology can be applied to various engineering problems such as noise reduction in passenger compartments in automobiles and aircraft, and vibration control of submerged structures. Several numerical examples are presented demonstrating that the proposed BESO method can be used for the topology optimization of these kinds of multiphysics problems effectively and efficiently for 2D and 3D cases. (C) 2015 Elsevier B.V. All rights reserved, (AU)

• Processo FAPESP: 13/20022-9 - Otimização topológica evolucionária de sistemas poro-elasto-acústicos
• Beneficiário: William Martins Vicente
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado