摘要
针对京杭运河航段运河漕舫的船体振动进行测试,并对位移的测量信号进行功率谱分析、傅里叶分析和频率-时间-幅值瀑布图分析,还对船舶噪声进行测量,利用测试结果分析船体振动的原因,并提出了减振降噪措施。经过对局部结构的改造,船体振动有了较为明显的减弱。
The vibration of the river boat in the Grand Canal was tested. The signals obtained by the accelerations sensor were analyzed, including power spectrum analysis, Fourier analysis, and frequency-time amplitude waterfall graph analysis. The noises of the boat were also measured. The causes of the vibration were studied by using the measured data. Some measures were taken to reduce the vibration and noise. The vibration of the boat wes weakened apparently after the modification.
出处
《船海工程》
2009年第4期77-80,共4页
Ship & Ocean Engineering
关键词
漕舫
振动测试
减振
降噪
river boat
vibration test
reducing vibration
noise control
