管道系统动力吸振器布置多目标优化设计  

Multi-objective Optimal Design of Dynamic Vibration Absorber for Vibration Reduction of Piping System

作　　者：王碧浩 熊夫睿[1] 黄茜[1] 张文正[1] WANG Bihao;XIONG Furui;HUANG Qian;ZHANG Wenzheng(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,四川成都610213

出　　处：《机械》2020年第6期10-16,31,共8页Machinery

基　　金：国家自然科学基金项目(51606180;11872060)。

摘　　要：工业设备中管道系统的振动具有明显地线谱特征,动力吸振器可以有效抑制管道在特定频率下的振动。引入一类含平动和转动自由度的动力吸振器,针对某管道系统开展简谐激励下的振动控制研究。首先,分别采用梁单元、弹簧-质量单元模拟管道和动力吸振器,并将动力吸振器与管道的运动方程耦合。采用拉丁超立方体抽样方法对动力吸振器的参数进行采样,建立动力吸振器参数到管道支承位置振动响应的输入输出关系。采用Kriging插值法建立输入输出关系的代理模型,基于代理模型进行参数相关性分析。应用全局高效响应面算法,对管道上动力吸振器的布置进行多目标优化,实现管道系统的振动控制,优化变量包括吸动力吸振器的安装位置和刚度参数。并针对得到的最优设计方案进行稳健性评估,考查各设计参数在设计方案名义值附近扰动时,对各输出变量的影响。The dynamic vibration absorber(DVA)is known for its capability on reducing pipe vibration under specific frequencies,which is a significant characteristic of vibration of pipeline system in industrial equipment.A type of dynamic vibration absorber(DVA)with translational and rotational degree of freedoms(DOFs)is introduced for reducing pipe vibration under specific frequencies.First of all,the piping system is modeled with beam elements and DVAs is modeled with mass-spring elements.In this model,kinematic equations of DVAs are coupled with the beams.Then,Latin Hypercube Sampling(LHS)technique is applied to sample data points and the input-output relationship that characterizes the mapping from parameters of DVAs to vibration response is established.The surrogate model is constructed based on the points.Kriging interpolation is applied for the data-driven model.The optimization is achieved via Efficient Global Optimization(EGO)algorithm to fine tune the deployment strategy with maximum vibration reduction at several locations.The optimization variables include the location of vibrations absorbers and stiffness parameters.The robustness of the obtained optimal design scheme is evaluated to examine the influence of each design parameter on each output variable when it is disturbed.

关 键 词：多目标优化 动力吸振器 代理模型 减振降噪 相关性分析 

分 类 号：TB535.1[理学—物理]