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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evolutionary topology optimization for natural frequency maximization problems considering acoustic-structure interaction

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Author(s):
Picelli, R. [1] ; Vicente, W. M. [1] ; Pavanello, R. [1] ; Xie, Y. M. [2]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Dept Computat Mech, Fac Mech Engn, BR-13083860 Campinas, SP - Brazil
[2] RMIT Univ, Ctr Innovat Struct & Mat, Sch Civil Environm & Chem Engn, Melbourne, Vic 3001 - Australia
Total Affiliations: 2
Document type: Journal article
Source: FINITE ELEMENTS IN ANALYSIS AND DESIGN; v. 106, p. 56-64, NOV 15 2015.
Web of Science Citations: 16
Abstract

This paper aims to extend the evolutionary methods of topology optimization to free vibration problems of acoustic-structure systems. The interacting fluid and structure fields are governed by the acoustic wave equation and the linear elasticity, respectively. Both domains are solved with the Unite element method. The coupling conditions are the equilibrium and kinematic compatibility at the acousticstructure interfaces. The proposed bi-directional evolutionary structural optimization (BESO) method seeks to maximize the first natural frequencies of the acoustic-structural model by switching elements into solid, fluid or void condition, It allows the acoustic-structure boundaries to be modeled and modified straightforwardly, addressing design-dependent loads on the topology optimization problem with simple finite element formulations. The proposed methodology extension is justified by various possible applications to free vibration of acoustic-structure systems such as tanks/reservoirs, acousticstructural devices, passengers compartments in automobiles and aircrafts and pipelines. Numerical results show that the evolutionary methods can be applied to this kind of multiphysics problem effectively and efficiently. (C) 2015 Elsevier B.V. All rights reserved (AU)

FAPESP's process: 13/20022-9 - Evolutionary topology optimization of poroelastoacoustic systems
Grantee:William Martins Vicente
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 11/09730-6 - Evolutionary structural optimization in problems of fluid-structure interaction
Grantee:Renato Picelli Sanches
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/08293-7 - CCES - Center for Computational Engineering and Sciences
Grantee:Munir Salomao Skaf
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC