失谐叶盘振动模态局部化定量描述方法  

Vibratory mode localization factors of mistuned bladed disk assemblies

作　　者：王建军[1] 于长波[1] 姚建尧[1] 李其汉[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《推进技术》2009年第4期457-461,473,共6页Journal of Propulsion Technology

基　　金：国家"八六三"计划(2008AA04Z403)

摘　　要：基于实际叶盘结构失谐振动模态局部化的基本特性和物理含义,提出了三种模态振型局部化程度三定量描述方法,并利用这三种模态局部化因子进行了典型叶盘结构失谐振动模态局部化程度的定量确定。讨论了典型叶盘结构失谐振动模态特性。分析说明和实例计算表明,相应的局部化因子计算过程简单、物理意义明确,可以有效定量确定实际叶盘结构的叶片失谐导致振动模态产生局部化的程度。Based on the vibration mode characteristics of mistuning bladed disk,the definitions of three modal localization factor are presented to assess quantitatively the behavior of the shape localization for the mistuned bladed disk,including the mode displacement factor,mode stress factor and mode strain energy factor.By these three mode factors,an example of mistuning bladed disk is finished by ANSYS.Their main properties are explained.Results indicate that the mode localization factors presented are effective.

关 键 词：失谐叶盘结构 振动模态局部化 三种模态局部化因子 

分 类 号：V231.92[航空宇航科学与技术—航空宇航推进理论与工程]