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[转子动力学] 请问“三重点理论”是指什么

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发表于 2006-11-16 23:43 | 显示全部楼层 |阅读模式

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我经常听人提起,可不清楚具体内容是什么。何谓三重点理论,多谢!
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发表于 2006-11-17 10:44 | 显示全部楼层
“三重点”调频理论——黄文虎提出,利用这种方法,设计出的长叶片既轻巧又安全,节省了大量合金材料。这一理论在当时是国内外首创,填补了我国汽轮机长叶片振动计算的空白,取得了巨大的经济效益和社会效益。这个理论在国际上也得到了公认,被选登在具有国际权威的美国《航空航天学报》上。
发表于 2006-11-17 13:52 | 显示全部楼层

具体点是什么啊,什么文献(著作)里提出的

发表于 2006-11-26 20:05 | 显示全部楼层
请自行到图书馆检索黄文虎先生的文章,未能提供更多帮助,非常抱歉!
 楼主| 发表于 2009-2-14 23:54 | 显示全部楼层

回复 楼主 escapist 的帖子

好像是,激励力的频率阶数与固有频率的阶数相同,且两个频率相等时,最危险.所以要避开三重点
发表于 2009-2-16 16:14 | 显示全部楼层

回复 楼主 escapist 的帖子

thank you!!!!!
发表于 2009-2-17 12:16 | 显示全部楼层
楼上的高人最好可以给本书的名字。好让我们后生有的放矢。
发表于 2009-2-17 19:07 | 显示全部楼层
三重点理论 你可以 google 一下。
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http://scholar.google.cn/scholar?q=%E4%B8%89%E9%87%8D%E7%82%B9%E7%90%86%E8%AE%BA+%E9%BB%84%E6%96%87%E8%99%8E&hl=zh-CN&lr=&btnG=%E6%90%9C%E7%B4%A2&lr=
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 楼主| 发表于 2009-2-17 23:52 | 显示全部楼层
Huang Wenhu.Free and forced vibrations of closely coupled turbo-machinery blades.AIAA Journal,1981,19(7).
这篇文献中好像提出了三重点理论.
发表于 2009-2-18 10:50 | 显示全部楼层

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.
-------------------------------------
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
发表于 2009-2-18 10:54 | 显示全部楼层
Vibration of Some Structures with Periodic Random Parameters
Wen-huHuang*
Harbin Institute of Technology, Harbin, China
In a periodic structural system, such as blades in a closed packet of turbomachinery, the natural frequencies of
the individual blades can be randomly different from one another. This paper describes a solution for such a
periodic structure in which the distributions of blade frequencies are random processes with small standard
deviations. A spectral method is suggested to solve differential equations with random coefficients. The expressions
for vibration modes are given; the standard deviations of natural frequencies are estimated, and the
results of forced vibration are presented. Some special features of vibration characteristics of this system are
shown as well.
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这篇AIAA文章也提到的“三重点理论”
发表于 2009-2-18 10:55 | 显示全部楼层

回复 沙发 supervb 的帖子

被选登在具有国际权威的美国《航空航天学报》上。
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航空航天学报,你说AIAA就行了。
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