北京航空航天大学学报 ›› 2014, Vol. 40 ›› Issue (7): 984-987.doi: 10.13700/j.bh.1001-5965.2013.0455

• 论文 • 上一篇    下一篇

叶盘耦合共振条件中激励阶次的确定

乞征, 王建军   

  1. 北京航空航天大学 能源与动力工程学院, 北京 100191
  • 收稿日期:2013-07-31 出版日期:2014-07-20 发布日期:2014-08-11
  • 作者简介:乞征(1990-),男,陕西富平人,硕士生,qizhengqizheng@gmail.com.

Excitation order verification of bladed-disk coupled resonance condition

Qi Zheng, Wang Jianjun   

  1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2013-07-31 Online:2014-07-20 Published:2014-08-11

摘要: 为了确定叶盘耦合共振条件中激励阶次的影响因素,首先建立了转静件干涉条件下叶盘结构所受激励阶次的简化图像描述,根据其与采样问题中混叠现象图形描述的相似性,对激励阶次的确定公式进行了新的理论推导,然后利用简单的叶盘结构实验件对确定公式进行了数值与实验验证.数值计算与实验研究均表明,转静件干涉条件下转子叶盘所受激励阶次等于静叶数和它最靠近的动叶数整数倍的差的绝对值,静叶数多于转子叶片数的一半时,也会发生叶盘耦合共振现象.

Abstract: In order to define the influence factors of excitation order in bladed-disk coupling resonance condition, the image description of excitation order applied on bladed-disk structure under rotor-stator interference was given firstly. Then the new formula of excitation order was performed according to the similarity of excitation order image description and aliasing image description in sampling problem. Finally verification of excitation order formula was given both numerically and experimentally using a simple experimental bladed-disk model. The results show that under rotor-stator interaction the excitation order applied on bladed-disk structure is equal to the absolute value of the difference between stator vane number and an integral multiple rotor blade number which is the one nearest to stator vane number and the excitation order only relates to the blade number of rotor-stator. The bladed-disk coupling resonance also appears even if the stator vane number is more than the half of the rotor blade number.

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