期刊首页 优先出版 当期阅读 过刊浏览 作者中心 关于期刊 English

2007年 第2卷 第1期

摘要

关键词

相关研究

回顶部

《机械工程前沿（英文）》 >> 2007年 第2卷 第1期 doi: 10.1007/s11465-007-0010-1

Research on acoustic-structure sensitivity using FEM and BEM

1.Department of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China; Department of Mechanical Engineering, Dalian Fisheries University, Dalian 116023, China; 2.Department of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China; 3.Department of Mechanical Engineering, Dalian Fisheries University, Dalian 116023, China

发布日期： 2007-03-05
HTML10 PDF 0 收藏 0

下一篇 上一篇

摘要

Acoustic-structure sensitivity is used to predict the change of acoustic pressure when a structure design variable is changed. The sensitivity is significant for reducing noise of structure. Using FEM (finite element method) and BEM (boundary element method) acoustic-structure sensitivity was formulated and presented. The dynamic response and response velocity sensitivity with respect to structure design variable were carried out by using structural FEM, the acoustic response and acoustic pressure sensitivity with respect to structure velocity were carried out by using acoustic BEM. Then, acoustic-structure sensitivity was computed by linking velocity sensitivity in FEM and acoustic sensitivity in BEM. This method was applied to an empty box as an example. Acoustic pressure sensitivity with respect to structure thickness achieved in frequency ranges 1 100 Hz, and its change rule along with stimulating frequency and design variable were analyzed. Results show that acoustic-structure sensitivity method linked with FEM and BEM is effective and correct.

相关研究