噪声与振动控制2018，Vol.38Issue(z1)：264-268,5.DOI:10.3969/j.issn.1006-1355.2018.Z1.055
一种环布动力吸振器的圆柱壳声振控制设计
Design of Vibro-acoustic Control of the Cylindrical Shell via a Dynamic Vibration Absorber Annulus
谢宇晗 1尹剑飞 1温激鸿1
作者信息
- 1. 国防科技大学 智能科学学院装备综合保障技术重点实验室,长沙 410073
- 折叠
摘要
Abstract
The approach of vibro-acoustic control of a cylindrical shell in low-frequency stage based on the concept of distributed vibration absorbers (DVA) was studied. Utilizing the theory of dynamic damped absorbers, the finite element model of the cylindrical shell was established and analyzed based on COMSOL Multiphysics software. According to the position of excitation, a design scheme by unequally spliced annular vibration absorbers on the inside wall of the cylindrical shell was given. The result shows that, by comparison with the equally spaced DVA annulus scheme, this design can provide a much better effect of the vibro-acoustic control. The vibration restrain can reach up to 26 dB and the acoustic attenuation can reach up to 20 dB in the studied low-frequency stage. This type of DVA annulus can provide a reference for the vibro-acoustic control design of large equipment shells.关键词
振动与波/声学/圆柱壳/动力吸振器/有限元分析Key words
vibration and wave/cylindrical shell/dynamic vibration absorber/FEM分类
通用工业技术引用本文复制引用
谢宇晗,尹剑飞,温激鸿..一种环布动力吸振器的圆柱壳声振控制设计[J].噪声与振动控制,2018,38(z1):264-268,5.
