同济大学学报（自然科学版）2012，Vol.40Issue(1)：88-91,96,5.DOI:10.3969/j.issn.0253-374x.2012.01.016
基于声辐射控制的板结构优化设计
Radiation Noise Reduction of a Plate-like Structure by Structural Optimization
摘要
Abstract
Analysis was done to find out the main factors to the radiation noise of a plate structure. Results show that the distribution shape of the vibration velocity can be the main factor when the frequency is low; while in the high frequency domain, the sound power almost only depends on the amplitude of the vibration velocity. Hereby, ' shape optimization' and 'amplitude optimization' were proposed to optimize the thickness distribution of the plate, so that the sound power could be reduced. Then, a rectangle plate was used to verify and evaluate these two optimization methods. Numeric results show the shape optimization method has a good performance when the frequency is not very high, and the amplitude optimization method brings a steady improvement of the sound radiation when the frequency is high.关键词
板结构/声辐射模态/辐射特性/优化Key words
plate structure/sound radiation modes/radiation character/optimization分类
通用工业技术引用本文复制引用
左曙光,魏欢,严新富,李徐刚..基于声辐射控制的板结构优化设计[J].同济大学学报（自然科学版）,2012,40(1):88-91,96,5.基金项目
上海市曙光计划(05SG22) （05SG22）
