噪声与振动控制2012，Vol.32Issue(3)：155-158,4.DOI:10.3969/j.issn.1006-1355.2012.03.036
推进轴系纵向振动引起的艇体声振特性分析
Analysis of Vibration and Acoustic Radiation of Submarine Hull Induced by Longitudinal Vibration of Propulsion Shafting
张赣波 1赵耀1
作者信息
- 1. 华中科技大学船舶与海洋工程学院,武汉430074
- 折叠
摘要
Abstract
The pulsatile thrust of propeller induced by asymmetrical wake field can cause longitudinal vibration of the propulsion shafting. The vibration will transmit through the shafting, thrust bearing and foundation to the submarine hull, and induce the low frequency underwater acoustic radiation of the hull. Considering the coupled effect of shafting, foundation and the hull, the structural model of the propulsion shafting was established. The propulsion shafting -submarine hull coupled vibration was analyzed, and the acoustic radiation field of the hull was calculated by FEM/BEM based on the mode superposition method. The results show that the longitudinal vibration mode is one of main modes which participates the acoustic radiation. By instilling a dynamic vibration absorber between the thrust bearing and its foundation, the transmission of longitudinal vibration to the hull can be decreased. The acoustic radiation of hull induced by longitudinal vibration of propulsion shafting can be controlled.关键词
振动与波/纵向振动/模态叠加法/有限元/边界元法/艇体声辐射/动力吸振器Key words
vibration and wave / longitudinal vibration / mode superposition method / FEM/BEM / submarine hull acoustic radiation / dynamic vibration absorber分类
通用工业技术引用本文复制引用
张赣波,赵耀..推进轴系纵向振动引起的艇体声振特性分析[J].噪声与振动控制,2012,32(3):155-158,4.
