Indexed by:期刊论文

Date of Publication:2009-12-25

Journal:JOURNAL OF SOUND AND VIBRATION

Included Journals:SCIE、EI、Scopus

Volume:328

Issue:4-5

Page Number:607-617

ISSN No.:0022-460X

Key Words:Optimization; Cylinder container; Acoustic pressure; Coupled structure-acoustic; Weight

Abstract:Cylinder container is a thin cylindrical shell sealed by a top and bottom plate. The internal noise reduction of the cylinder container is very important for vehicle, ship and other projects. A finite element model of the cylinder container vibration coupled with internal acoustic field is set up and the acoustic response feature is determined. Then, two optimization models are adopted: (1) the acoustic response is taken as the object function and the structure weight is taken as constraints; (2) the structure weight is taken as the object function and the acoustic response is taken as constraints. The design variables are thickness distribution for shell, bottom plate and top plate. The optimization problem is solved by the feasible direction method and a 30dB reduction of the pressure level is achieved for optimum designs. The results show the effectiveness of the method. (C) 2009 Elsevier Ltd. All rights reserved.