摘要
机械设备的振动是导致船舶辐射噪声的激励源之一,目前常用机械设备的振动加速度级作为评定其激振特性的指标。但在工程实践中常发现相同的机械设备在不同安装状态下的振动加速度级存在较大的差异。本文在分析产生这种现象的原因的基础上对评定机械设备激振特性的方法提出改进建议。
Vibration of the mechanical equipment in the ship is a kind of exciting source to the ship radiation noise.Usually the quantity of excitation is indicated by level of vibration acceleration of the mechanical equipment.But we find that there is a difference between the accelerations of the same machine on different sites.In this paper,based on the analysis of this kind of phenomena,we would like to give some suggestions on improve the rule of deciding excitation magnitude of the machine.
出处
《舰船科学技术》
北大核心
2012年第10期115-117,共3页
Ship Science and Technology
关键词
机械设备
振动加速度级
激振力
阻抗
mechanical equipment
level of vibration acceleration
exciting force
impedance
