| 瞬变载荷作用下滑动轴承轴心轨迹计算仿真 |
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| 引用本文： | 马金奎,路长厚,陈淑江.瞬变载荷作用下滑动轴承轴心轨迹计算仿真[J].振动．测试与诊断,2010,30(1):6-10. |
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| 作者姓名： | 马金奎 路长厚 陈淑江 |
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| 作者单位： | 山东大学高效洁净机械制造教育部重点实验室,济南,250061 |
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| 基金项目： | 国家"九七三"计划资助项目 |
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| 摘 要： | 为了研究动压滑动轴承在瞬变载荷作用下的润滑状况,在考虑轴颈惯性力和非线性油膜力的基础上,建立了滑动轴承轴心轨迹的运动方程,提出了采用欧拉法求解有限长滑动轴承瞬时轴心轨迹的数值方法。分别计算了在阶跃、矩形脉冲和正弦脉冲瞬变载荷作用下轴心轨迹、最大油膜压力及最小油膜厚度的变化规律。分析结果表明,在瞬变载荷作用时,轴心轨迹、最大油膜压力及最小油膜厚度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,轴心乃收敛于原平衡位置,而阶跃载荷则使轴心收敛于新的平衡位置。
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| 关 键 词： | 滑动轴承 润滑 仿真 轴心轨迹 瞬变载荷 |
Simulation of Journal Centre Trajectories of Hydrodynamic Journal Bearing Under Transient Loads |
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| Ma Jinkui,Lu Changhou,Chen Shujiang.Simulation of Journal Centre Trajectories of Hydrodynamic Journal Bearing Under Transient Loads[J].Journal of Vibration,Measurement & Diagnosis,2010,30(1):6-10. |
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| Authors: | Ma Jinkui Lu Changhou Chen Shujiang |
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| Affiliation: | Ma Jinkui,Lu Changhou,Chen Shujiang(Ministry of Education Key Laboratory of High Efficiency , Clean Mechanical Manufacture,Sh,ong University Jinan,250061,China) |
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| Abstract: | This paper attempts to study the lubrication property of a hydrodynamic journal bearing under transient loads.Nonlinear equations of motion for the rotor-bearing system considering the journal inertia effects were established.A computational method using the Euler scheme was put forward to determine the transient journal centre trajectories of the bearing.Three kinds of dynamic loads were imposed on the shaft:step loads,rectangular pulse loads and sinusoidal impulse loads.The laws of the journal centre traj... |
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| Keywords: | journal bearing lubrication simulation journal centre trajectories transient load |
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