带缘板阻尼结构转子叶片振动特性的影响参数分析

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (10) : 221-227.

论文

张大义1,2，杨诚1, 夏颖1，付检伟1，洪杰1,2

作者信息 +

Influential parameters of rotating blades with under platform dampers

ZHANG Dayi1,2, YANG Cheng1, XIA Ying1, FU Jianwei1, HONG Jie1,2

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摘要

针对转子叶片缘板阻尼结构设计需求，首先根据简化模型定性分析了缘板阻尼结构接触作用对刚度和阻尼带来的非线性影响；然后采用考虑正压力的分布形式和局部滑移现象的分布式摩擦力学模型，通过数值计算叶片非线性振动响应，获得了缘板阻尼结构关键参数对叶片振动特性的影响规律。研究结果表明：阻尼块质量是缘板阻尼结构设计的最关键参数，应根据最佳压紧力值确定阻尼块质量。

Abstract

According to the configuration design requirements of the under platform damper(UPD) in aero engines, the nonlinear stiffness and damping due to frictional contact were studied based on a simplified model of UPD.The nonlinear vibration responses of the blade with different design parameters were calculated by adopting the distributed contact model which takes account of the distributed normal load and partial slip.The influences of the design parameters of UDP on the vibration characteristics of the blade were investigated.The results indicate that the UPD mass is the pivotal parameter in the design of UPD, and it is supposed to determine it by the optimal pressing load.

关键词

叶片

/ 干摩擦 / 振动特性 / 阻尼 / 缘板阻尼结构

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张大义1,2，杨诚1, 夏颖1，付检伟1，洪杰1,2. 带缘板阻尼结构转子叶片振动特性的影响参数分析[J]. 振动与冲击, 2019, 38(10): 221-227

ZHANG Dayi1,2, YANG Cheng1, XIA Ying1, FU Jianwei1, HONG Jie1,2. Influential parameters of rotating blades with under platform dampers[J]. Journal of Vibration and Shock, 2019, 38(10): 221-227

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