南京航空航天大学民航学院,南京,210016
Published:2007
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CHEN Guo. Nonlinear dynamic response analysis of unbalance-rubbing coupling faults of rotor-ball bearing-stator coupling system[J]. 2007, 22(10).
DOI:
CHEN Guo. Nonlinear dynamic response analysis of unbalance-rubbing coupling faults of rotor-ball bearing-stator coupling system[J]. 2007, 22(10). DOI:
建立了含转子不平衡-碰摩耦合故障的转子-滚动轴承-机匣耦合动力学模型.在模型中
充分考虑了转子系统的不平衡和碰摩故障的耦合.对滚动轴承模型
充分考虑了轴承间隙、滚珠与滚道的非线性赫兹接触以及由滚动轴承支撑刚度变化而产生的VC(Varying compliance)振动.运用数值积分方法获取了系统响应
研究了系统的分叉与混沌运动
分析了旋转速度、碰摩刚度、转子偏心量
轴承座-机匣刚度以及机匣-基础刚度对系统响应的影响
得到了在转子不平衡和碰摩故障耦合下的转子-滚动轴承-机匣耦合系统动力响应规律.
A new rotor-ball bearing-stator coupling dynamic model was established for the unbalance-rubbing coupling faults.In the model
the rotor mass unbalance and rubbing faults were fully considered.The nonlinear factors of ball bearing
such as the clearance of bearing
nonlinear Hertzian contract between balls and races
and the varying compliance(VC) of bearing support were modeled.Moreover
the numerical integral method was employed to obtain system' s responses
whereas the bifurcation and chaos motion were analyzed
followed by the effects of rotational speed
rubbing stiffness
rotor eccentricity
bearing house-stator stiffness
and stator-foundation stiffness on dynamic responses.Therefore
the non-linear dynamic response laws of rotor-ball bearing-stator system under unbalance and rubbing coupling faults were obtained.
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