微几何齿形修形对行星轮毂齿轮效率的影响

Q3 Engineering

International Journal of Powertrains Pub Date : 2018-03-14 DOI:10.1504/IJPT.2018.10011451

Ehsan Fatourehchi, M. Mohammadpour, P. King, H. Rahnejat, G. Trimmer, B. Womersley, A. Williams

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引用次数: 11

摘要

行星轮毂系统提供所需的速度和扭矩变化与更轻，紧凑和同轴结构比传统的齿轮系。在不同载荷-速度条件下，车用行星轮毂配合齿翼间产生的摩擦是动力损失的主要来源之一。修正齿轮齿形和控制接触面形貌是补救措施。研究了齿顶和齿尖卸压对系统效率的影响。它包括一个解析弹流动力学分析的椭圆点接触的冠直齿齿轮齿。分析还包括了凸粒直接接触对对立啮合面的影响。齿接触分析(TCA)用于获得接触足迹形状以及接触的运动学和载荷分布。通过参数化研究，观察了不同表面光洁度下齿轮齿顶和齿尖凸出对行星轮毂功率损失的影响。

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Microgeometrical tooth profile modification influencing efficiency of planetary hub gears

Planetary hub systems offer desired speed and torque variation with a lighter, compact and coaxial construction than the traditional gear trains. Generated friction between the mating teeth flanks of vehicular planetary hubs under varying load-speed conditions is one of the main sources of power loss. Modification of gear tooth geometry as well as controlling the contacting surface topography is the remedial action. The paper studies the effect of tooth crowning and tip relief upon system efficiency. It includes an analytical elastohydrodynamic analysis of elliptical point contact of crowned spur gear teeth. The analysis also includes the effect of direct contact of asperities on the opposing meshing surfaces. Tooth contact analysis (TCA) is used to obtain the contact footprint shape as well as contact kinematics and load distribution. A parametric study is carried out to observe the effect of gear teeth crowning and tip relief with different levels of surface finish upon the planetary hubs' power loss.

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来源期刊

International Journal of Powertrains Engineering-Automotive Engineering

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： IJPT addresses novel scientific/technological results contributing to advancing powertrain technology, from components/subsystems to system integration/controls. Focus is primarily but not exclusively on ground vehicle applications. IJPT''s perspective is largely inspired by the fact that many innovations in powertrain advancement are only possible due to synergies between mechanical design, mechanisms, mechatronics, controls, networking system integration, etc. The science behind these is characterised by physical phenomena across the range of physics (multiphysics) and scale of motion (multiscale) governing the behaviour of components/subsystems.