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首先采用粗糙度轮廓测量分析仪测得了试件表面粗糙度,接着用傅立叶变换非线性逼近法建立了齿面粗糙度函数,然后将此函数叠加到油膜厚度方程中建立了齿轮传动混合弹流润滑模型。基于此模型,在齿轮传动参数固定不变的条件下,通过改变横、纵纹理方向的粗糙度值共进行了46组混合弹流润滑数值计算。结果表明,随着油膜比厚K的增大,纵向条纹下粗糙齿面平均膜厚与光滑齿面平均膜厚比值hav/has逐渐增大最后趋近于1,而横向条纹与之相反逐渐减小最后也趋近与1。最后,借助回归分析理论,建立了hav/has与油膜比厚K之间的定量关系。
Firstly, the surface roughness of the test piece was measured by using the roughness profile analyzer, then the tooth surface roughness function was established by using the non-linear Fourier transform method, and then the function was superimposed to the film thickness equation to establish gear-driven hybrid Elastohydrodynamic lubrication model. Based on this model, a total of 46 groups of mixed elastohydrodynamic lubrication are calculated by changing the roughness values in the transverse and longitudinal directions under the condition of constant gear transmission parameters. The results show that with the increase of film thickness K, the ratio of average film thickness to smooth tooth surface hav / has gradually increases under the longitudinal stripes and finally approaches 1, while the horizontal stripes decrease gradually Small eventually approached with 1. Finally, with the help of regression analysis theory, a quantitative relationship between hav / has and oil film thickness K was established.