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工程设计学报
Chinese Journal of Engineering Design  2014, Vol. 21 Issue (6): 534-539    DOI: 10.3785/j.issn. 1006-754X.2014.06.005
    
Effect of preload mistuning on dynamic characteristic and structural strength of combined rotors
ZHANG Ying-ying1， WANG Ai-lun1， SU Yong-lei1，3， ZENG Hai-nan2
1. Key Laboratory of High performance and Complex Manufacturing， Central South University， Changsha 410083， China;
2. School of Mechanical Engineering， Tianjin University， Tianjin 300072， China;
3. Chongqing changan automobile Co.， Ltd.， Chongqing 401120， China;
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Abstract  In order to have a good knowledge of dynamic characteristic for combined rotor considering preload mistuning, the preload mistuned dynamic model of combined rotor considering interface roughness was established, and the effect of rod preload mistuning on dynamic characteristics of the combined rotor was studied. Then, the influence of rod preload mistuning on stress distribution was obtained. The results showed that vibration increasement was caused by preload force mistuning and the greater of rotor unbalance response with the faster of velocity, more of disk stages and fewer of rod number. The stress distribution of negative mistuning was the same as preload tune condition, whereas the positive mistuning had great effect on structure strength for combined rotor. The maximum stress increased which was caused by mistuning.

Key words： mistuning      combined rotor      unbalance response      structural strength     
Received: 19 March 2014      Published: 28 December 2014
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Cite this article:

ZHANG Ying-ying，WANG Ai-lun，SU Yong-lei，ZENG Hai-nan. Effect of preload mistuning on dynamic characteristic and structural strength of combined rotors. Chinese Journal of Engineering Design, 2014, 21(6): 534-539.

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https://www.zjujournals.com/gcsjxb/10.3785/j.issn. 1006-754X.2014.06.005     OR     https://www.zjujournals.com/gcsjxb/Y2014/V21/I6/534


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关键词： 失谐,  组合转子,  不平衡响应,  结构强度 
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