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Dynamic Characteristics of a Finite-Width Journal Bearing Lubricated with Powders

机译:用粉末润滑有限宽度轴颈的动态特性

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This paper attempts to investigate the dynamic characteristics of a powder lubricated journal bearing. The stiffness and damping coefficients are obtained using finite perturbation method. The stability limit of the rotor speed is obtained for a system consisting of a single rotor disc in the middle of a flexible shaft having identical plain cylindrical journal bearings at the ends. The threshold speed of instability for a rotor supported on powder lubricated journal bearing is compared with that of oil lubricated journal bearing. The numerical results show that a rotor supported on powder lubricated journal bearings remains stable for a speed limit much higher than that for oil lubricated bearings.
机译:本文试图研究粉末润滑轴颈轴承的动态特性。 使用有限的扰动方法获得刚度和阻尼系数。 对于在柔性轴的中间的单个转子盘组成的系统,获得转子速度的稳定性极限,该系统在柔性轴的具有端部处具有相同的普通圆柱形轴承。 将粉末润滑轴颈轴承支撑在粉末润滑轴颈轴承上的转子的不稳定性的阈值速度与油润滑轴颈轴承进行比较。 数值结果表明,在粉末润滑的轴颈轴承上支撑的转子保持稳定,其速度限制远高于油润滑轴承的速度限。

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