Abstract

In recent years, porous bearings have been increasingly used in various industrial applications because they are less noisy, have good precision, and are relatively maintenance free. In this article, the numerical analysis of a conical porous hybrid journal bearing system (CPHJBS) has been carried out. The interactive effects of permeability parameter, semi cone angle, and pseudoplastic (shear thinning) lubricant behavior on the performance of CPHJBS have been theoretically investigated. The governing Reynolds equation for a non-Newtonian lubricant in the bearing clearance space of CPHJBS is solved using a finite element model. Findings of this study indicate that the CPHJBS operating with a pseudoplastic lubricant offers a higher value of stability threshold speed margin $\left({\overline{\omega }}_{th}\right)$ for the lower value of semi cone angle $\left(\gamma ={10}^0\right)$ and lower value of permeability parameter $\left(\Psi =0.005\right).$

摘要

近年来，由于多孔轴承的噪音少，精度高且相对无需维护，因此越来越多地用于各种工业应用中。在本文中，对锥形多孔混合轴颈轴承系统（CPHJBS）进行了数值分析。从理论上研究了渗透率参数，半锥角和假塑性（剪切稀化）润滑剂行为对CPHJBS性能的相互作用。使用有限元模型求解了CPHJBS轴承游隙空间中非牛顿润滑剂的控制雷诺方程。这项研究的结果表明，使用假塑料润滑剂的CPHJBS可提供更高的稳定性阈值速度裕度值$（{\overline{\omega }}_{ŤH}）$ 半锥角的较低值 $（\gamma ={10}^0）$ 和较低的渗透率参数值 $（\Psi =0.005）。$