瞬变载荷作用下五瓦可倾瓦滑动轴承特性分析

发布时间：2018-05-03 00:27

本文选题：可倾瓦轴承 + 瞬变载荷　；参考：《润滑与密封》2016年04期

【摘要】：为了研究动压五瓦可倾瓦滑动轴承在瞬变载荷作用下的动态行为,在考虑轴颈惯性力和非惯性力的基础上,建立可倾瓦滑动轴承的轴心轨迹方程,利用有限单元法求解油膜压力,采用欧拉法求解有限长滑动轴承瞬时轴心轨迹;研究不同预负荷下偏心率与瓦块姿态角的变化关系,以及在阶跃载荷和正弦脉冲载荷作用下轴心轨迹、瓦块摆角及轴颈所受合力变化规律。结果表明:在瞬变载荷作用时,轴心轨迹、瓦块姿态角及油膜合力都有较大的变化并呈现出一定的振荡过程;由于脉冲载荷的作用时间有限,随着其消失,轴心仍收敛于原平衡位置,而阶跃载荷则使轴心收敛于新的平衡位置;相同条件下的可倾瓦轴承比固定瓦轴承具有更好的稳定性。
[Abstract]:In order to study the dynamic behavior of dynamic five-watt tilting pad sliding bearing under transient load, the axial trajectory equation of tilting pad sliding bearing is established on the basis of considering the journal inertial force and non-inertial force. The finite element method is used to solve the oil film pressure and the Euler method is used to solve the instantaneous axis trajectory of the finite length sliding bearing, and the relationship between the eccentricity and the attitude angle of the tile under different preloads is studied. Under the action of step load and sinusoidal pulse load, the axial trajectory, the swinging angle of the tile and the force acting on the journal are changed. The results show that the axial trajectory, the attitude angle of the tile and the oil film force all change greatly and exhibit a certain oscillating process when the transient load is acted on, and disappear with the limited time of the pulse load. The axis center still converges to the original equilibrium position, while the step load makes the axis center converge to the new equilibrium position, and the tilting pad bearing has better stability than the fixed bearing under the same conditions.
【作者单位】：华东理工大学机械与动力工程学院;中国人民解放军71669部队保障部;
【分类号】：TH133.3

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