Analysis of dynamic characteristics for a rotor system with pedestal looseness
Analysis of dynamic characteristics for a rotor system with pedestal looseness
复制标题
基座松动转子系统动态特性分析
DOI：
10.3233/sav-2010-0588
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发表时间：
2011
影响因子：
1.6
通讯作者：
ZHao Xueyan
中科院分区：
文献类型：
--
作者：
Teng Yunnan;Wen Bangchun;Ma Hui;ZHao Xueyan
建立了因螺栓松动而导致支座松动的转子系统的有限元模型，分析了松动参数对转子系统动力特性的影响。当支座位移小于或等于松动间隙时，随着未松动螺栓刚度的减小，转子运动呈现周期1 ~周期2、周期3 ~周期5的变化规律。在转速增加的过程中也可以观察到类似的分岔现象。但随着基础刚度的减小，转子运动从第六周期到第三周期再到第四周期。当基础刚度较小时，支座位移大于松动间隙时，转子响应随松动间隙的减小呈现出一阶周期和高次谐波分量，如2X、3X等;而当基础刚度较大时，随着松动间隙的减小，转子响应的频谱将由组合频率分量向连续频谱方向发展。
This paper presents a finite element model of a rotor system with pedestal looseness stemming from a loosened bolt and analyzes the effects of the looseness parameters on its dynamic characteristics. When the displacement of the pedestal is less than or equal to the looseness clearance, the motion of the rotor varies from period-one through period-two and period-three to period-five with the decreasing of stiffness of the non-loosened bolts. The similar bifurcation phenomenon can be also observed during the increasing process of the rotational speed. But the rotor motion is from period-six through period-three to period-four with the decreasing of the foundation stiffness. When the stiffness of the foundation is small and the displacement of pedestal is greater than the looseness clearance, the response of the rotor exhibits period-one and high order harmonic components with the decreasing of looseness clearance, such as 2X, 3X etc. However, when the stiffness of the foundation is great, the spectrum of the response of the rotor will be from combined frequency components to the continuous spectrum with the decreasing of the looseness clearance.
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影响因子：
4.7
作者：
C.-G. Chien;R. Fung;C. Tsai
通讯作者：
C.-G. Chien;R. Fung;C. Tsai
影响因子：
1.6
作者：
Chen, Chih-Hao;Shyu, Rong-Juin;Ma, Chih-Kao
通讯作者：
Ma, Chih-Kao
影响因子：
4.6
作者：
Yongyong He;D. Guo;F. Chu
通讯作者：
Yongyong He;D. Guo;F. Chu
DOI：
10.1115/detc2007-34199
发表时间：
2007
期刊：
--
影响因子：
--
作者：
Hui Ma;Hongliang Yao;Z. Ren;Feng Wen;B. Wen
通讯作者：
Hui Ma;Hongliang Yao;Z. Ren;Feng Wen;B. Wen
DOI：
10.4028/www.scientific.net/kem.245-246.115
发表时间：
2003-07
期刊：
Key Engineering Materials
影响因子：
--
作者：
Yongyong He;Z. Chen;D. Guo;F. Chu
通讯作者：
Yongyong He;Z. Chen;D. Guo;F. Chu