基于等效线性化法的干摩擦缘板系统振动特性研究  

Vibration Characteristics of a Platform System with Dry Friction Damper Using Equivalent Linearization Method

作　　者：何尚文[1] 任兴民[1] 康召辉[1] 南国防[1] 

机构地区：[1]西北工业大学振动工程研究所,西安710072

出　　处：《机械科学与技术》2010年第12期1727-1731,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：航空科学基金项目(20092108003)资助

摘　　要：提出了一种新的等效线性化方法来解决干摩擦力非线性给干摩擦缘板阻尼系统分析带来的不便;考虑干摩擦力高次谐波对缘板阻尼系统振动特性的影响对系统一次谐波解进行修正;研究干摩擦阻尼器设计中的一些关键参数对叶片阻尼系统减振特性的影响,得到了干摩擦叶片阻尼系统的减振规律。Since nonlinearity of dry friction causes inconvenience to the analysis of systems with dry friction platform damper,we present a new equivalent linearization method in which high-order harmonics of dry friction which influence the vibration characteristics of the platform system is utilized to amend the results of the first harmonic.The influence of the key parameters in dry friction damper design on the vibration characteristics of the platform system with dry friction damping is studied in this paper,and the rules for reducing the vibration of damped blades are given.The results are useful for analyzing the vibration characteristics of the platform system with dry friction damper,and for designing the damper.

关 键 词：干摩擦缘板系统 等效线性化 谐波平衡 振动特性 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]