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http://dx.doi.org/10.5050/KSNVN.2005.15.2.225

A Design Method for Direction Selective Structural-acoustic Coupled Radiator  

Seo, Hee-Seon (한국과학기술원 기계공학과)
Kim, Yang-Hann (한국과학기술원 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.15, no.2, 2005 , pp. 225-231 More about this Journal
Abstract
This paper presents a design method for the structural-acoustic coupled radiator that can emit sound in the desired direction. A coupled system that has a finite space and a semi-infinite space separated by two flexible walls and an opening is considered. An objective function is selected to maximize radiation power on a main axis and minimize a side lobe level. To get initial values, prediction of a pressure distribution on field points and radiation pattern of the structural-acoustic coupling system is shown at a coupled-resonant frequency. Three different optimization methods are adapted to design the coupled radiator. Pressure and intensity distribution of the designed radiator is presented.
Keywords
Structural-acoustic Coupling; Radiation Pattern; Multi-objective Optimization; Weighting Method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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