Polymer based additives with long chain of suspended particles in oil retain polarity effect in the presence of couple stresses. Further, at high speed of journal bearing, the oil film experiences substantial agitation due to pressure-viscosity interaction which evolve piezo-viscous dependency of the lubricant. The present article addresses the combined effects of piezo-viscous dependency and couple stresses of lubricant on the characteristics of multi-recessed hybrid journal bearing under misaligned operation. To govern the flow of piezo-viscous-polar lubricant in clearance space of the journal bearing, a piezo-polar function is used to obtain the modified form of Reynolds equation. Galerkin’s technique is employed to obtain the finite element formulation in the form of algebraic equation, which is solved to determine the unknown pressure field in the bearing system. The present results reveal that the use of piezo-viscous-polar lubricant offers an enhancement in performance characteristics of bearing system, i.e., a significant hike of 13–36%, 27–30% and 7–10% in the values of \(\overline{S}_{ij}\), \(\overline{C}_{ij}\) and \(\overline{\omega }_{th}\) respectively vis-à-vis Newtonian lubricant. The numerically simulated non-dimensional results presented in the article may be useful to generate the bearing design data of the hybrid journal baring system functioning in realistic and stringent operating conditions.

油中含有长链悬浮颗粒的聚合物添加剂在耦合应力存在下保留极性效应。此外，在轴颈轴承高速运转时，由于压力-粘度相互作用，油膜会经历剧烈的搅动，从而产生润滑剂的压电-粘性依赖性。本文讨论了压电粘性依赖性和润滑剂耦合应力对未对准操作下多凹槽混合轴颈轴承特性的综合影响。为了控制轴颈轴承间隙空间中压电粘性极性润滑剂的流动，使用压电极性函数来获得雷诺方程的修正形式。采用伽辽金技术获得代数方程形式的有限元公式，求解该公式以确定轴承系统中的未知压力场。目前的结果表明，使用压电粘性极性润滑剂可以提高轴承系统的性能特征，即\(的值显着提高13-36%、27-30%和7-10%) \overline{S}_{ij}\)、\(\overline{C}_{ij}\)和\(\overline{\omega }_{th}\)分别相对于牛顿润滑剂。本文中提出的数值模拟无量纲结果可能有助于生成在现实和严格的操作条件下运行的混合轴颈轴承系统的轴承设计数据。