摘要
以6310轴承和轴组成的轴-滚动轴承系统为研究对象,研究变载荷作用下计入轴承间隙时轴-滚动轴承系统动力学问题。首先利用Hertz公式和静不定问题的解法(力法)推导出滚动轴承受力与变形关系的计算公式并得到数值解,再以整个轴-滚动轴承系统为研究对象,利用ADAMS动力学仿真软件进行动力学仿真。研究了变载荷作用下刚性轴-滚动轴承系统、弹性轴-滚动轴承系统的幅频特性和变载荷作用下的动态响应,着重讨论轴承间隙对轴-轴承系统动力学性能的影响。计算结果表明,轴的弹性和轴承间隙对轴-轴承系统的动力学性能影响很大,轴-轴承系统为非线性动力学系统,并随轴承间隙的增加而增强。
Abstract
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.
关键词
间隙 /
赫兹理论 /
静不定问题 /
轴-滚动轴承系统
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Key words
Clearance of roller bearing /
Hertz theory /
static indeterminate problem /
a mechanical system of a shaft and two roller bearings
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何芝仙;干洪.
计入轴承间隙时轴-滚动轴承系统动力学行为研究[J]. 振动与冲击, 2009, 28(9): 120-124
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
中图分类号:
TH113
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