摘要
基于瞬态衰减法,以钢质曲板为基层,橡胶材料为阻尼层,研究基于不同尺度效应、不同测试环境和阻尼层厚度对船舶曲板结构损耗特性的影响。结果表明:曲板结构损耗因子在数值上呈现低频大、高频小的特点,且水下损耗因子数值明显较空气中大;同类构件,尺度效应对船舶曲板结构损耗因子影响较大;增加阻尼层的厚度有利于提高结构的损耗特性,且阻尼层厚度越大,效果越显著。
With the steel curved plate as base and rubber as damping layer,the influence of different scale effects,media and thickness of layer on the damping performance of ship curved plate structures was studied based on the transient decay method.The results show that the value of curved plate structure loss factor is large at the high frequency,while it is small at the low frequency,and the value of underwater loss factor is obviously larger than that of air.For homogeneous components,the scale effects have a great influence on the loss factor of ship curved plate structure.The thickness of the damping layer is beneficial to improving the damping performance of the structure,and the greater the thickness of the laying damping layer,the more significant the influence will be.
作者
魏征
高聪
WEI Zheng;GAO Cong(No.92578 Unit of PLA,Beijing 100161,China;Harbin Engineering University,Harbin 150001,China)
出处
《舰船科学技术》
北大核心
2021年第11期14-18,共5页
Ship Science and Technology
关键词
船舶曲板结构
瞬态衰减法
阻尼材料
损耗因子测试
ship typical structures
transient decay method
damping material
loss factor test
