充液管道流固耦合振动的主动控制方法和机理研究

项目名称： 充液管道流固耦合振动的主动控制方法和机理研究

项目编号： No.51279035

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 水利工程

项目作者： 靳国永

作者单位： 哈尔滨工程大学

项目金额： 76万元

中文摘要： 充液管道系统在舰船中广泛应用，其振动噪声水平严重影响舰船的隐蔽性能。由于管道中振动能量同时通过液体和管壁传播，是一个复杂的流固耦合问题，很难单独通过控制结构或流体来控制整个系统能量的传递。针对这一关键问题，本课题提出一种能有效控制充液管道耦合振动能量传递的主动控制新方法，采用管状PZT 作动器串在充液管道系统中作为其一部分管段，通过控制该作动器的变形，实现控制管道系统压力脉动的同时隔离管壁振动能量的传递。旨在提出合理、有效的控制充液管道流固耦合振动问题的主动控制策略，建立充液管道中管状PZT作动器的数学物理模型，给出合适的误差传感策略和传感方法，并建立PZT次级作动和误差传感统一的主动控制模型进行数值模拟和理论研究，分析揭示管状PZT作动和主动控制机理，相应方法通过实验验证。从而获得一种能有效抑制管道流固耦合振动的主动控制方法，为舰船管路系统振动噪声的控制提供新的思维、控制策略和控制方法。

中文关键词： 充液管道；耦合振动；流固耦合；主动控制；压电作动器

英文摘要： Fluid filled piping system is widely used in ship and submarine,of which vibration and noise level seriously affected the concealment performance of submarine. Since the vibrational energy in pipes transmits simultaneously through the liquid and the pipe wall, which leads to a complex problem of fluid-structure interaction, it is very difficult to control the whole energy transmission only by separately control the structure vibration or fluid pulsation. In response to this problem, a new control method is proposed in this project which can effectively control the coupled vibration energy transmission in fluid filled pipes. A tubular PZT actuator is adopted and set in fluid filled pipe system in series as part of its tube section. Through the control of the deformation of the actuator, active control of the pressure pulsation in the pipeline system is realized, and at the same time the vibration energy transmission in the pipe wall is isolated effectively. The project aims to put forward the reasonable, effective active control strategy and approach to reduce the fluid-structure coupled vibration in liquid filled pipe system. The main research works for the project include the modeling of the mathematical physical model of the tubular PZT actuator in liquid-filled pipes, appropriate error sensing strategies and

英文关键词： fluid filled pipe；coupled vibration；fluid-structure；active control；piezoelectric actuator