期刊文献+

带有间隙支承的CT机回转系统的非线性动力学 被引量:1

NONLINEAR DYNAMICS OF A ROTATING SYSTEM WITH SUPPORTING-CLEARANCE IN CT MACHINE
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摘要 将全身CT机的机械回转系统简化成一个刚性转子系统,该系统的静子与支承之间存在间隙。首先对其非线性振动响应进行了解析分析,然后用数值方法研究了间隙、偏心和回转角速度等参数变化所导致的系统分岔和混沌运动的特征。 The rotating system of CT machine is simplified into a rigid rotor system. There exist clearances between the stator and the elastic support. The nonlinear vibration is analyzed analytically first. With the numerical method, the bifurcation behaviors and chaos are studied with such parameters as clearance, eccentric and rotating velocity.
出处 《机械工程学报》 EI CAS CSCD 北大核心 2001年第3期70-72,77,共4页 Journal of Mechanical Engineering
基金 辽宁省科学技术基金(9810400801) 国家自然科学基金(19990510)
关键词 CT机 回转系统 非线性动力学 分岔 混沌 间隙支承 CT machine Rotating system Nonlinear dynamics Bifurcation Chaos
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参考文献4

  • 1[1]Choi S K, et al. Mode- locking and chaos in a Jeffcott rotor with beating - clearances. Trans ASME, J. of Applied Mechanics, 1994, 61: 131~138
  • 2[2]Ehrich F F. Some observations of chaotic vibration phenomena in high - speed rotordynamics. Trans.ASME, J. of Vib. & Acoustics, 1991, 113:50~57
  • 3[3]Ganesan R. Dynamic response and stability of a rotorsupport system with nonsymmetrical bearing clearance.Mechanisms & Machine Theory, 1996, 31 (6): 781 ~ 798
  • 4[4]Kim Y B. Bifurcation analysis for a modified Jeffcott rotor with bearing- clearances. Nonlinear Dynamics, 1990, 1:221 ~ 228

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