船舶管路系统振动控制研究

Research on vibration control of ship pipeline system

船舶管路系统振动噪声控制问题依然有待解决,极大影响船舶的声学性能。本文通过实船测试和理论分析提出一种新的管路系统被动控制技术。首先对调谐质量阻尼器进行理论建模,分析了质量比、阻尼因子、频率比等调谐质量阻尼器参数对其性能的影响;然后通过船管路系统振动测试确定了重点控制对象和重点控制频率,并据此对调谐质量阻尼器进行参数优化和结构设计;最后通过有限元分析软件Ansys进行了振动抑制效果的验证,结果表明管路系统振动被有效抑制。

The vibration and noise control of the pipe system remains a challenging problem, which significantly affects their acoustic stealth property of ships. The current paper proposes a novel passive control technique of the pipe system by real boat test and theoretical modeling. The analytical model of the tuned mass damper is established, and effects of damper parameters（e.g. mass ratio, damping factor and frequency ratio） on vibration absorbing property are clarified. Then vibration test of the pipe system is conducted to identify the key objects and frequencies that need controlling, based on which the parameters of the damper are optimized and its structure design is carried out. The noise reduction effect of the tuned mass damper is verified by finite element analyses using Ansys, which shows the pipe system vibration is effectively suppressed.