A Study on Dynamic Analysis of Helical Geared Rotor System With Oil-Film Bearing

具油膜軸承的斜齒輪轉子系統動態特性之分析

陳膺中(Ying-Chung Chen) ； 呂文正(Wen-Cheng Lu) ； 崔兆棠(Siu-Tong Choi)

《中國機械工程學刊》 42卷4期 (2021/08) Pp. 361-370

摘要

This study employs the finite element method to analyze the dynamic behavior of a helical geared rotor system with oil-film bearing. The system comprises the rotating shaft, helical gear pair, and oil-film bearing. The Timoshenko beam model is used to simulate the rotating shaft, and the rotating shaft's rotational inertia and shear strain effect are considered. In consideration of the gyroscopic effect, the helical gear pair is assumed to be two rigid disks, and a linear spring and damper are connected along the pressure line of the disks for simulation. This study investigates the effects of bearing lubricant viscosity, bearing radial clearance, bearing diameter, bearing length, bearing length-to-diameter ratio, helix angle, and an inner diameter of the rotating shaft on the systems' axial and lateral dynamic response for determining the system's dynamic properties. The simulation results serve as a reference for academic researchers and industrial practitioners wishing to further investigate helical gear rotor systems with oil-film bearings.

關鍵字

rotor dynamic ； oil-film bearing ； finite element ； helical gear pair

並列摘要

本研究採用有限元方法來分析具油膜軸承的斜齒輪轉子系統的動態特性。該系統包括旋轉軸、斜齒輪對和油膜軸承。旋轉軸模擬為Timoshenko樑，其考慮了旋轉軸的旋轉慣性和剪力效應。斜齒輪對假設為兩個剛性轉盤，沿著壓力線以線性彈簧和阻尼來模擬斜齒輪對的接觸。本研究探討了軸承潤滑粘度、軸承徑向間隙、軸承直徑、軸承長度、軸承長度與直徑之比、螺旋角以及旋轉軸的內徑對系統軸向和橫向動態響應的影響。數值結果可作為提供進一步研究帶有油膜軸承的斜齒輪轉子系統的學術研究人員和工業從業人員的參考。