Analysis of dynamical behaviour of full-floating disk thrust bearings-猫眼课题宝

DOI：

10.24425/bpasts.2021.139001

发表时间：

2023-11

期刊：

Bulletin of the Polish Academy of Sciences Technical Sciences

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Otto-von-Guericke Institute of Mechanics Otto-von-Guericke Steffen NITZSCHKE Institute of Mechanics-Otto-von-Guericke-Institute-of-Mechanics-Steffen-of-2265771920;And Otto-von-Guericke University 39106 Otto-von-Gueric Christian ZIESE-And-Otto-von-Guericke-University-39106-Christian-2265771954;Germany Magdeburg Germany Elmar WOSCHKE Magdeburg-Germany-Magdeburg-Germany-Elmar-WOSCHKE-Magdeburg-2265771918

。全浮动套圈轴承在高速涡轮机械轴上是最先进的，例如在涡轮增压器中。它们的主要特点是在轴和外壳之间增加了一个环，导致两个流体膜串联排列。类似地，可以设计一种推力轴承，在轴颈套圈和轴承座之间增加一个分隔盘。只有在阻力力矩的驱动下，圆盘才能自由旋转，而圆盘则由一个靠在轴颈上的短轴承径向支撑。本文通过在时间积分过程中在线求解雷诺偏微分方程组，研究了这种推力轴承及其在转子暂态动力学仿真中的应用。特别注意这种轴承类型的不同液膜之间的耦合。最后，讨论了耦合解和非耦合解之间的区别。

. Full-floating ring bearings are state of the art at high speed turbomachinery shafts like in turbochargers. Their main feature is an additional ring between shaft and housing leading to two fluid films in serial arrangement. Analogously, a thrust bearing with an additional separating disk between journal collar and housing can be designed. The disk is allowed to rotate freely only driven by drag torques, while it is radially supported by a short bearing against the journal. This paper addresses this kind of thrust bearing and its implementation into a transient rotor dynamic simulation by solving the Reynolds PDE online during time integration. Special attention is given to the coupling between the different fluid films of this bearing type. Finally, the differences between a coupled and an uncoupled solution are discussed.

Analysis of dynamical behaviour of full-floating disk thrust bearings

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