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research-article

Multi-objective Optimization of Elastic Beams for Noise Reduction

[+] Author and Article Information
Meng-Xin He

Department of Mechanics Tianjin University Tianjin, 300072, China
hemengxin309@sina.cn

Fu-Rui Xiong

Nuclear Power Institute of China Chengdu, 610041, China
xfr90311@gmail.com

Jian-Qiao Sun

School of Engineering University of California Merced, CA 95343, USA
jqsun@ucmerced.edu

1Corresponding author.

ASME doi:10.1115/1.4036680 History: Received November 12, 2016; Revised May 01, 2017

Abstract

This paper presents a study of multi-objective optimization of elastic beams with minimum weight and radiated sound power. The goal of this research is to discover the potentials to design multi-objective optimal elastic structures for better acoustic performance. We discuss various structural-acoustic properties of the Pareto solutions of the multi-objective optimization problem. We have found that geometrical and dynamic constraints can substantially reduce the volume fraction of feasible solutions in the design space, which can make it difficult to search for the optimal solutions. Several case studies with different boundary conditions are studied to demonstrate the multi-objective optimal designs of the structure.

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