THEORETICAL AND EXPERIMENTAL INVESTIGATION ON FRICTIONALLY DAMPED BLADE

doi:10.19666/j.rlfd.1997.06.003

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THEORETICAL AND EXPERIMENTAL INVESTIGATION ON FRICTIONALLY DAMPED BLADE

Thermal Power Generation Issue 6, Pages: 7-13(1997)

更新时间：2025-09-28

- THEORETICAL AND EXPERIMENTAL INVESTIGATION ON FRICTIONALLY DAMPED BLADE
- 作者机构：
  
  1. 西安交通大学,西安
  2. 西安电力部热工研究院,西安
  3. ,710032
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.1997.06.003
  CLC： TK26
- Published：1997
- 稿件说明：
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THEORETICAL AND EXPERIMENTAL INVESTIGATION ON FRICTIONALLY DAMPED BLADE[J]. Thermal Power Generation, 1997, (6): 7-13.
DOI：

THEORETICAL AND EXPERIMENTAL INVESTIGATION ON FRICTIONALLY DAMPED BLADE[J]. Thermal Power Generation, 1997, (6): 7-13. DOI： 10.19666/j.rlfd.1997.06.003.

摘要

本文用理论和实验相结合的方法研究了具有干摩擦阻尼结构叶片（以下简称阻尼叶片）的动力特性，给出了一种采用扭曲梁单元来离散叶片的有限元分析模型，并采用谐波平衡法简化了阻尼端干摩擦力的数学表达，建立了阻尼叶片的有限元动力方程。用所建立的模型计算了实验平板叶片的动力特性，计算结果与阻尼叶片的实验数据进行了比较，验证了理论模型的正确性，得出阻尼接触端正压力存在一个最优值，在此值下阻尼器的减振效果最好，并得出激振力的大小会影响最优正压力的值。

Abstract

The dynamic characteristics of dry frictionally damped blade have been studied with theoretical and experimental methods. A finite element model of damped blade by adopting twisted beam element is feristly developed

which can be employed to simulate the blade perfectly by using a few elements. Then the dynamic characteristics of a test blade is analyzed through the finite element method

and the results of computation are compared with experimental results

the consistence between them have poven the theoretical model. At last

a conclusion is drawn that there is an optimum normal force between the rub surfaces of dampers

and external exciting force can influence the value of optimum normal force.

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