CAJ | 학술논문

假设两相互啮合渐开线斜齿轮表面具有连续余弦波状粗糙度，建立斜齿轮微观稳态热弹流模型，利用多重网格法求解压力分布和多重网格积分法求解弹性变形，讨论粗糙度幅值和波长对油膜压力、膜厚及油膜中层温度的影响。结果表明：粗糙表面不利于润滑膜的形成，考虑粗糙度的表面使膜厚、压力及温度分布均出现层状鼓层现象；随着波长的增大，油膜厚度、压力及温度波动幅度有所减小，而随着波幅的增大，膜厚、压力及温度曲线均明显波动。因此，在工程实际中，要尽量增大粗糙度波长，减小粗糙度波幅以实现平稳的机械传动。
가설량상호교합점개선사치륜표면구유련속여현파상조조도，건립사치륜미관은태열탄류모형，이용다중망격법구해압력분포화다중망격적분법구해탄성변형，토론조조도폭치화파장대유막압력、막후급유막중층온도적영향。결과표명：조조표면불리우윤활막적형성，고필조조도적표면사막후、압력급온도분포균출현층상고층현상；수착파장적증대，유막후도、압력급온도파동폭도유소감소，이수착파폭적증대，막후、압력급온도곡선균명현파동。인차，재공정실제중，요진량증대조조도파장，감소조조도파폭이실현평은적궤계전동。
By assuming the surfaces of two mutual meshed helical gears with continuous cosine wave shape roughness, the steady state model of micro thermal elastohydrodynamic lubrication (EHL)of helical gears was established,and the completely numerical solution was got by using the multiple grid method to calculate the pressure distribution and the grid integration method to calculate the elastic deformation.The influences of the roughness amplitude and wavelength on the film pressure,film thickness and the middle temperature of the film were analyzed.The results show that rough surface is not conducive to the formation of lubrication film,and the film thickness,pressure and temperature hierarchical bulges are appeared in the surface when considering the roughness.The oil film thickness,pressure and temperature are decreased as the wavelength increases,and the oil film thickness,pressure and temperature curves are obviously in fluctuation as the amplitude increases.Therefore in engineering practice,the wavelength of roughness should be increased and the amplitude should be reduced in order to achieve stable mechanical transmission.