Hong Sung-Ho
Department of Mechanical System Engineering, Dongguk University - WISE Campus, Gyeongju, 38066, Republic of Korea.
Sci Rep. 2024 Sep 29;14(1):22577. doi: 10.1038/s41598-024-73178-1.
Mechanical systems are expected to operate under various load conditions, and it is necessary to use a lubrication system to achieve reliability and stable performance. Journal bearings, which are used to achieve such stable lubrication, are representative of hydrodynamic lubrication bearings. In this study, groove-shaped structures and rubber were applied to the ends of the bearings to ensure stable lubrication performance under conditions where, for various reasons, shock loads are applied in addition to static loads under misaligned conditions. The groove structure and rubber contribute to stable lubrication performance by preventing contact between the shaft and bearing as well as absorbing shock loads through elastic deformation of the groove's end due to oil film pressure. This novel design, which utilizes groove-type flexible structures and rubber, led to journal bearings that exhibited improved lubrication performance under various shock load conditions. When a shock load is applied to a mechanical system, the design proposed in this study contributes to improving the reliability of the mechanical system by enhancing its lubrication performance.
机械系统需要在各种负载条件下运行，因此有必要使用润滑系统来确保可靠性和稳定性能。用于实现这种稳定润滑的径向滑动轴承是流体动力润滑轴承的代表。在本研究中，在轴承端部应用了槽形结构和橡胶，以确保在各种原因导致的不对中条件下，除了静载荷之外还施加冲击载荷的情况下，仍能保持稳定的润滑性能。槽形结构和橡胶通过防止轴与轴承之间的接触以及通过油膜压力使槽端部发生弹性变形来吸收冲击载荷，从而有助于实现稳定的润滑性能。这种利用槽型柔性结构和橡胶的新颖设计，使得径向滑动轴承在各种冲击载荷条件下都表现出了更好的润滑性能。当机械系统受到冲击载荷时，本研究提出的设计通过提高其润滑性能，有助于提高机械系统的可靠性。
