基于传递矩阵法的充液管道振动功率流计算分析  

Calculation and Analysis of Vibration Power Flow in Liquid-Filled Pipes Based on Transfer Matrix Method

作　　者：陈旭 李天匀[1,2,3] 朱翔 

机构地区：[1]华中科技大学船舶与海洋工程学院,湖北 武汉 [2]船舶与海洋水动力湖北省重点实验室,湖北 武汉 [3]高新船舶与深海开发装备协同创新中心,上海

出　　处：《声学与振动》2021年第4期133-142,共10页Open Journal of Acoustics and Vibration

摘　　要：针对管路系统中的流固耦合振动问题,采用Riccati传递矩阵法计算了一段管路的振动特性和振动功率流,获得了管路系统的振动固有频率以及位移谐响应结果,并与有限元仿真结果进行了对比,进一步分析了振动功率流沿管路的传递分布,最后研究了弹性支撑刚度和阻尼对振动功率流的影响。计算结果表明,采用本文方法计算管路的振动特性具有一定的准确性,振动输入功率流沿着管路传递逐渐衰减,在弹性支撑处会有明显的衰减,并且其考虑了响应的幅值和相位差,在振动评价中更加准确和全面。Aiming at the fluid-structure coupling vibration problem in the pipeline system, the Riccati transfer matrix method is used to calculate the vibration characteristics and vibration power flow of a section of pipeline. The vibration natural frequency and displacement harmonic response results of the pipeline system are obtained, and the results were compared with finite element simulation. The transmission distribution of the vibration power flow along the pipeline was further analyzed. Finally, the influence of the stiffness and damping of the elastic support on the vibration power flow was studied. The calculation results show that the calculation of the vibration characteristics of the pipeline using the method in this paper has a certain accuracy. The vibration input power flow is gradually attenuated along the pipeline, and there will be obvious attenuation at the elastic support. Since vibration power flow takes the magnitude and the phase difference into account, it is more accurate and comprehensive in vibration evaluation.

关 键 词：充液管路 流固耦合 Riccati传递矩阵法 振动功率流 

分 类 号：O17[理学—数学]