Evolutionary Topology Optimization of Poroelastoacoustic Coupled Multiphysics Systems

• Grant number: 13/00085-6
• Support Opportunities: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): May 01, 2013
• Effective date (End): April 30, 2017
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Renato Pavanello
• Grantee: William Martins Vicente
• Host Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated scholarship(s): 13/20022-9 - Evolutionary topology optimization of poroelastoacoustic systems, BE.EP.PD

Abstract

The modeling and design of complex systems involving multiphysics phenomena interaction that occur in distinct time and space scales is one of the most important current paradigms in mechanical engineering. In this context, this project of postdoctoral research aims to develop and validate one methodology for topology optimization of poroelastoacoustic multiphysics systems, using efficient 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 finite element method with the non-symmetric formulation u-p. The sensitivity analysis is done by a direct method using the finite difference method. For the optimization algorithm, it is proposed a heuristic ESO/BESO (Evolutionary Structural Optimization/ Bi-directional Evolutionary Structural Optimization) based method. The topology optimization problem involves the minimization of multiphysics coupled systems responses, which might be displacements, pressures or another secondary variable. For systems under static loads, the method aims to maximize the structural stiffness of the system for a prescribed final volume. 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 field of engineering, such as reduction of interior noise in airplane and cars, offshore structures design, improvement of musical instruments, etc.

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)

AZEVEDO, F. M.; MOURA, M. S.; VICENTE, W. M.; PICELLI, R.; PAVANELLO, R.. Topology optimization of reactive acoustic mufflers using a bi-directional evolutionary optimization method. STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, v. 58, n. 5, p. 2239-2252, NOV 2018. (13/00085-6, 15/18607-4, 13/08293-7)

PICELLI, R.; VICENTE, W. M.; PAVANELLO, R.. Evolutionary topology optimization for structural compliance minimization considering design-dependent FSI loads. FINITE ELEMENTS IN ANALYSIS AND DESIGN, v. 135, p. 44-55, NOV 1 2017. (15/18607-4, 13/08293-7, 13/00085-6, 11/09730-6)