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Dynamic analysis of the rotor supported by journal bearing with micro-spherical surface texturing

机译:带有微球形表面纹理的轴颈轴承支撑的转子的动力学分析

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In this paper, based on the existing manufacturing methods, the journal bearing with spherical surface texturing has been taken as the study object to establish a calculating model. With Matlab programming, effects of micro-spherical surface texturing on the performance of journal bearing have been investigated; the dynamic coefficients were obtained by solving the Reynolds equation and four Reynolds equations of perturbation pressure with the finite difference method; the influences of spherical texturing on the dynamic coefficients of journal bearing have been studied. Taking Jeffcott rotor supported by journal bearing as the research object, the influences of surface texturing on the rotor critical speed and the unbalance response have been discussed deeply. A series of performance curves were obtained and explained. The study shows that compared with smooth surface journal bearing, the load capacity of bearing with concave texturing decreases slightly and increases with convex texturing substantially. Convex and concave texturing will influence the dynamic performances of rotor, such as critical speed and unbalance respond. And such influences will change with the changing of texturing geometry parameters.
机译:本文以现有的制造方法为基础,以球面纹理的轴颈轴承为研究对象,建立了计算模型。使用Matlab编程,研究了微球表面纹理化对轴颈轴承性能的影响。用有限差分法求解摄动压力的雷诺方程和四个雷诺方程,得到动力系数。研究了球面纹理对轴颈轴承动态系数的影响。以轴颈轴承支撑的杰夫科特转子为研究对象,深入探讨了表面织构化对转子临界转速和不平衡响应的影响。获得并解释了一系列性能曲线。研究表明,与光滑轴颈轴承相比,凹形纹理轴承的承载能力略有下降,而凸形纹理轴承的承载能力则显着增加。凹凸纹理会影响转子的动态性能,例如临界速度和不平衡响应。并且这些影响将随着纹理几何参数的变化而变化。

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