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首页> 外文期刊>Engineering Computations >Effect of journal misalignment on the static characteristics of an innovative journal bearing with adjustable elements in load-on-pad and load-between-pad configurations
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Effect of journal misalignment on the static characteristics of an innovative journal bearing with adjustable elements in load-on-pad and load-between-pad configurations

机译：杂志对焊盘装载载荷和焊盘构造的可调元件的创新轴颈轴承静态特性的影响

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Purpose The purpose of this paper is to theoretically analyze an innovative form of variable bearing configuration having four pads with unique adjustability principle operated under journal misaligned conditions. The parameters such as load positions, degrees of misalignment (DM) and pad adjustment configurations influencing the steady-state performance of the four-pad adjustable bearing are detailed in this paper. Design/methodology/approach The proposed adjustable pad geometry possesses the ability to undergo radial and tilt motions in both inward and outward directions. Analysis is carried out by considering journal misalignment in vertical and horizontal planes with bearing modelled for load-on-pad and load-between-pad configurations. The film thickness equation derived to incorporate the radial and tilt adjustment parameters is further modified to accommodate the different load orientations and misaligned journal conditions. The pressure field equation is solved by applying finite-difference technique combined with Gauss Siedel iterative method. Findings At higher DM, peak pressures generated in the minimum film thickness region near the pad ends highly influences the bearing load carrying capacity. Results indicated that the adjustable four-pad bearing geometry is highly efficient in withstanding the journal misalignment by radially displacing and tilting the four pads in negative directions. Originality/value For bearing designers, this research highlights the importance of considering the misalignment factor during the design stages of an adjustable journal bearing. The proposed adjustability concept is proven to be effective enough to improve the bearing performance and, in turn, withstand the journal misalignment.
机译：目的本文的目的是理论上，从理论上分析一种创新形式的可变轴承配置，具有四个垫，其在杂志未对准条件下操作的独特调节性原理。本文详细介绍了影响四垫可调轴承稳态性能的负载位置，未对准（DM）和焊盘调节配置等参数。设计/方法/方法所提出的可调垫几何形状具有在向内和向外方向上进行径向和倾斜运动的能力。通过考虑垂直和水平平面中的轴承和轴上的载荷和焊盘之间的载荷配置的轴承模型来进行分析。进一步修改衍生以结合径向和倾斜调节参数的膜厚度方程以适应不同的负载取向和未对准的杂志条件。通过施加有限差异技术与高斯Siedel迭代方法相结合来解决压力场方程。在较高的DM处发现，在垫端附近的最小膜厚度区域中产生的峰值压力高度影响轴承承载能力。结果表明，通过径向移位和倾斜在负面方向上的四个焊盘，可调节的四个焊盘轴承几何形状高效。本研究轴承设计人员的原创性/值突出了考虑在可调期轴承的设计阶段期间未对准因素的重要性。所拟议的可调性概念被证明是有效的，以便改善轴承性能，并反过来承受杂志的错位。

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