1.天津工业大学 机械工程学院, 天津 300387
2.天津市现代机电装备技术重点实验室, 天津 300387
3.北京航空航天大学 虚拟现实技术与系统国家重点实验室, 北京 100083
莫帅(1987— ),男,湖南衡阳人,工学博士,副教授,硕士生导师,研究方向为智能机械传动。
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莫帅,党合玉,邹振兴等.高速弧齿圆柱齿轮风阻功率损失研究[J].机械传动,2021,45(04):1-6.
Mo Shuai,Dang Heyu,Zou Zhenxing,et al.Research on Windage Power Loss of High-speed Arc Tooth Cylindrical Gear[J].Journal of Mechanical Transmission,2021,45(04):1-6.
莫帅,党合玉,邹振兴等.高速弧齿圆柱齿轮风阻功率损失研究[J].机械传动,2021,45(04):1-6. DOI: 10.16578/j.issn.1004.2539.2021.04.001.
Mo Shuai,Dang Heyu,Zou Zhenxing,et al.Research on Windage Power Loss of High-speed Arc Tooth Cylindrical Gear[J].Journal of Mechanical Transmission,2021,45(04):1-6. DOI: 10.16578/j.issn.1004.2539.2021.04.001.
齿轮高速运行时,风阻功率损失是导致传动效率低的主要因素之一。基于计算流体动力学(Computational fluid dynamics,CFD)技术建立了弧齿圆柱齿轮周围空气流域模型并进行数字孪生,得出弧齿圆柱齿轮周围空气流域内的速度矢量图及风阻损失功率。结果表明,弧齿圆柱齿轮周围设置挡板可有效减小风阻功率的损失,轴向挡板间距越小,弧齿圆柱齿轮的风阻功率损失越小。轴向挡板间隙为2 mm时的风阻功率损失相比于轴向挡板间隙为10 mm时的风阻功率损失减小27.80%。而对于径向挡板来说,并不是间隙越小弧齿圆柱齿轮的风阻功率损失越小。不同齿形的齿轮在相同条件下风阻功率损失不同,同等条件下对比发现,压力角为25°的直齿轮相比于标准斜齿轮的风阻功率损失减小了23.84%。
For gears running at high speeds, windage power loss is one of the main factors for low transmission efficiency. Computational fluid dynamics(CFD) technology is used to establish the air flow field model around the arc tooth cylindrical gear. The digital twin simulation calculation is performed to obtain the velocity vector diagram and windage loss power of the air flow around the arc tooth cylindrical gear. The results show that the baffle around the arc tooth cylindrical gear can effectively reduce windage power loss, the smaller the axial baffle spacing,the smaller the windage power loss of the arc tooth cylindrical gear. When the axial baffle gap is 2 mm,the windage power loss is reduced by 27.80% compared with the axial baffle gap of 10 mm. But for the radial baffle,it is not that the smaller the gap, the smaller the windage power loss of the arc tooth cylindrical gear. Different types of tooth shapes have different windage power losses under the same conditions. Under the same conditions, it is found that the spur gear with a pressure angle of 25° reduces the windage power loss by 23.84% compared with the standard helical gear.
弧齿圆柱齿轮风阻功率损失计算流体动力学轴向挡板径向挡板
Arc tooth cylindrical gearWindage power lossCFDAxial baffleRadial baffle
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HU X,JIANG Y,LUO C,et al.Churning power losses of a gearbox with spiral bevel geared transmission[J].Tribology International,2019,129:398-406.
莫帅,岳宗享,冯志友,等.面齿轮分汇流系统动力学均载特性研究[J].华中科技大学学报(自然科学版),2020,48(2):23-28.
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ZHANG Q,HOU L,TANG R,et al.Method of processing and an analysis of meshing and contact of circular arc tooth trace cylindrical gears[J].Transactions of Famena,2017,40(4):11-24.
MA D Q,YE Z H,YANG H.Tooth surface reconstruction and tooth profile geometric analysis of circular arc tooth trace cylindrical gears[J].Transactions of Famena,2019,43(1):29-44.
SUBRAMANIAM S.Lagrangian-eulerian methods for multiphase flows[J].Progress in Energy and Combustion Science,2013,39(2/3):215-245.
MEHDIZADEH A,SHERIF S A,LEAR W E.Numerical simulation of thermo fluid characteristics of two-phase slug flow in microchannels[J].International Journal of Heat and Mass Transfer,2011,54(15/16):3457-3465.
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