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回复 9楼 escapist 的帖子
应该就是这篇文章吧!
Free and Forced Vibration of Closely
Coupled Turbomachinery Blades
Wen-hu Huang*
Harbin Institute of Technology, Harbin, China
This paper deals with the free and forced vibration of closely coupled turbomachinery blades on a disk which
are connected by elements forming a circumferentially continuous periodic structure that will be called a
rotationally periodic structure in this paper. A computational procedure for calculating the free vibration of
rotationally periodic structures with various types of connecting elements is obtained by a transfer matrix
method. The method of analysis for a packet formed by a finite number of blades is also discussed. The forced
vibration and the condition of resonance of a rotationally periodic structure under a time-varying periodic
excitation are studied, and a vibration design criterion is suggested.
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As these three quantities must coincide with each other,
hence this condition of resonance may be called "the triplecoincidence
condition," The condition of avoiding triple
coincidence may be suggested as a vibration design criterion
for blades of this type.
The above conclusion |
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