Dynamic performance of the mechanical system, which is composed of a shaft and two rolling bearings, is studied in this paper. First a rolling bearing 6310 with clearance is studied to obtain the formula between the applying load and the relevant displacement, and the problem is referred to as a static indeterminate problem and the Hertz theory is also used to solve it. Then the numerical solution is acquired. Two kinds of dynamical problems on variable loads are discussed for the system, one is to treat the shaft as rigid body and the other is to treat it as a flexible shaft. The special software ADAMS for dynamical simulation is used to solve the problems. The relation between amplitude and frequency, dynamic response of the system in resonance are obtained on variable load while the clearance of the roller bearing is stressed. Numerical results are shown that the flexibility of shaft and the clearance of the roller bearing obviously effect to the behavior of the system. The system is a nonlinear one and the greater the clearance is, the stronger the nonlinear property appears.
He Zhixian;Gan Hong.
Research on Dynamic Behavior of the Shaft-Rolling Bearings System with Clearance[J]. Journal of Vibration and Shock, 2009, 28(9): 120-124
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