Evolutionary topology optimization of poroelastoacoustic systems

• Grant number: 13/20022-9
• Support type: Scholarships abroad - Research Internship - Post-doctor
• Effective date (Start): April 01, 2014
• Effective date (End): March 31, 2015
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal researcher: Renato Pavanello
• Grantee: William Martins Vicente
• Supervisor abroad: Yi Min Xie
• Home Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Research place: RMIT University, Melbourne, Australia
• Associated to the scholarship: 13/00085-6 - Evolutionary Topology Optimization of Poroelastoacoustic Coupled Multiphysics Systems, BP.PD

Abstract

The structural topology optimization of complex systems involving multiphysics interaction is the main focus of this work. In this context, this postdoctoral research aims to develop and validate one methodology for topology optimization of poroelastoacoustic multiphysics systems, using computational techniques. The proposed evolutionary optimization method contains three steps: The system's response solution, the sensitivity analysis and the evolutionary algorithm. The analysis of the system is carried out using the nite element method with the non-symmetric formulation u-p. The sensitivity analysis and the optimization algorithm are based on the heuristic methods ESO/BESO (Evolutionary Structural Optimization/ Bi-directional Evolutionary Structural Optimization). The sensitivity analysis of the multiphysics system and the implementation of the optimization algorithm will be carried on at RMIT University under the supervision of Prof. Dr. Mike Xie. Thetopology optimization problem involves the minimization of the frequency responses in mul-tiphysics coupled systems, which might be displacements, pressures or another secondaryvariable. The micro-macro Biot-Allard formulation will be implemented for bi-dimensional and three-dimensional domains and incorporated in a code of evolutionary topology optimization. Applications for the tools to be developed in this project are wide and present in several elds of engineering, such as reduction of interior noise in airplane and cars, offhore structures design, improvement of musical instruments, etc. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VICENTE, W. M.; ZUO, Z. H.; PAVANELLO, R.; CALIXTO, T. K. L.; PICELLI, R.; XIE, Y. M. Concurrent topology optimization for minimizing frequency responses of two-level hierarchical structures. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, v. 301, p. 116-136, APR 1 2016. Web of Science Citations: 27.

PICELLI, R.; VICENTE, W. M.; PAVANELLO, R.; XIE, Y. M. Evolutionary topology optimization for natural frequency maximization problems considering acoustic-structure interaction. FINITE ELEMENTS IN ANALYSIS AND DESIGN, v. 106, p. 56-64, NOV 15 2015. Web of Science Citations: 16.

VICENTE, W. M.; PICELLI, R.; PAVANELLO, R.; XIE, Y. M. Topology optimization of frequency responses of fluid-structure interaction systems. FINITE ELEMENTS IN ANALYSIS AND DESIGN, v. 98, p. 1-13, JUN 2015. Web of Science Citations: 30.