CAJ | 학술논문

采用粗糙度轮廓测量分析仪测得齿面表面粗糙度，用傅立叶变换非线性逼近法建立齿面粗糙度函数，将此函数叠加到油膜厚度方程中建立齿轮传动混合弹流润滑模型，并在齿轮传动参数固定不变的条件下，通过改变润滑剂黏度共进行一系列混合弹流润滑数值计算。结果表明：随着润滑剂黏度的增大，粗糙齿面压力波动减小，平均油膜厚度增大，轮齿接触区次表面主剪应力最大值逐渐降低；当油膜比厚（平均油膜厚度与齿面粗糙度的均方根值的比值）小于4.0时，轮齿接触区次表面主剪应力最大值随油膜比厚的增大按照抛物线规律减小。借助回归分析理论，建立粗糙齿面接触应力与油膜比厚之间的定量关系。
채용조조도륜곽측량분석의측득치면표면조조도，용부립협변환비선성핍근법건립치면조조도함수，장차함수첩가도유막후도방정중건립치륜전동혼합탄류윤활모형，병재치륜전동삼수고정불변적조건하，통과개변윤활제점도공진행일계렬혼합탄류윤활수치계산。결과표명：수착윤활제점도적증대，조조치면압력파동감소，평균유막후도증대，륜치접촉구차표면주전응력최대치축점강저；당유막비후（평균유막후도여치면조조도적균방근치적비치）소우4.0시，륜치접촉구차표면주전응력최대치수유막비후적증대안조포물선규률감소。차조회귀분석이론，건립조조치면접촉응력여유막비후지간적정량관계。
The surface roughness of a test-piece was measured by a roughness profile measuring analyzer.With the help of the Fourier approximation a roughness function was formed based on the measured data,and a gearing mixed elasto-hydrodynamic lubrication model was established by adding the roughness function to the oil film thickness equation.Based on this model,a series of numerical calculations were carried through by changing the lubricant viscosity when gearing pa-rameters and other lubricant parameters were fixed.The results show that with the increase of lubricant viscosity,the aver-age oil film thickness between two teeth is increased,and the maximum principal shear stress on tooth subsurface is de-creased gradually.When the film ratio(the ratio of average oil film thickness and RMS roughness value)is less than 4.0, the maximum principal shear stress is reduced according to the parabolic law with the film ratio increasing.A quantitative relationship between the contact stress for rough tooth surface and the film ratio was created based on the regression analy-sis of the calculated results.