失谐叶盘结构振动响应局部化实验研究  

Tests for forced response localization of a mistuned bladed disk assembly

作　　者：廖海涛[1] 王帅[2] 王建军[2] 李其汉[2] 

机构地区：[1]中国航空研究院,北京100012 [2]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《振动与冲击》2012年第1期29-34,共6页Journal of Vibration and Shock

基　　金：国家高技术研究发展计划863项目(2008AA04Z403)

摘　　要：基于作者提出的预测失谐叶盘结构最大失谐幅值放大系数及最坏失谐模式的方法,利用搭建的行波激励实验系统,针对典型的整体叶盘结构模型试件进行了失谐振动响应局部化实验。首先通过有限元仿真确定失谐叶盘振动响应局部化实验所需的最坏失谐模式,然后经过数据采集与后处理得到行波激励下失谐叶盘结构的强迫响应,通过实验验证了失谐跳变-强迫响应局部化现象,实验结果与理论分析取得较好一致性。In order to validate the numerical demonstration was conducted. The numerical methods methods proposed by the previous theoretical study, the test were firstly used to predict the worst mistuning patterns under engine different order excitations, the measurement for forced responses to an engine order traveling wave excitation was then accomplished using optical measurement systems. The test data were used to verify the theoretical and numerical predictions of a bladed disk dynamic behaviors. Good agreement between test measurements and finite element analysis was obtained. The occurrence of mistuning jumpforced response localization phenomena was also validated.

关 键 词：失谐叶盘结构 振动响应局部化 最坏失谐模式 失谐跳变-响应局部化 

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]