ISSN   1004-0595

CN  62-1095/O4

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孟凡明, 张万民. 计入油膜惯性作用椭圆接触弹流润滑性能研究[J]. 摩擦学学报, 2019, 39(5): 585-592. DOI: 10.16078/j.tribology.2019016
引用本文: 孟凡明, 张万民. 计入油膜惯性作用椭圆接触弹流润滑性能研究[J]. 摩擦学学报, 2019, 39(5): 585-592. DOI: 10.16078/j.tribology.2019016
MENG Fanming, ZHANG Wanmin. Elastohydrodynamic Lubrication of Elliptical Contact Considering Effect of Inertia of Lubrication Film[J]. TRIBOLOGY, 2019, 39(5): 585-592. DOI: 10.16078/j.tribology.2019016
Citation: MENG Fanming, ZHANG Wanmin. Elastohydrodynamic Lubrication of Elliptical Contact Considering Effect of Inertia of Lubrication Film[J]. TRIBOLOGY, 2019, 39(5): 585-592. DOI: 10.16078/j.tribology.2019016

计入油膜惯性作用椭圆接触弹流润滑性能研究

Elastohydrodynamic Lubrication of Elliptical Contact Considering Effect of Inertia of Lubrication Film

  • 摘要: 基于计入惯性项的Navier-Stokes方程和连续性方程,建立了计入油膜惯性作用的椭圆接触弹性流体润滑模型,研究了油膜惯性对椭圆接触弹流润滑性能的影响. 弹性变形通过快速傅里叶变换(FFT)计算,而油膜压力通过复合直接迭代法求解. 数值结果表明:在计入油膜惯性作用后,润滑膜的二次压力峰增大,入口区的油膜速度减小,且逆流区范围扩大;考虑油膜惯性作用后油膜厚度有所增大,当载荷从300 N增加到700 N时,中心膜厚最大增加了5.14%. 试验结果也表明,考虑油膜惯性作用后的中心膜厚数值解与试验结果更加接近.

     

    Abstract: An elastohydrodynamic lubrication (EHL) model of the elliptical contact considering the lubrication film inertia was proposed based on the Navier-Stokes equation considering the inertia and continuity equation, and then the film inertia effect on the EHL performance of the elliptical contact was studied. In doing so, the deformation and proposed model were solved, respectively, with a Fast Fourier Transform (FFT) and composite direct iteration method. The numerical results show that with the consideration of the film inertia effect, the secondary pressure spike of the lubrication film increased, and the lubricant velocity became smaller and the lubricant reflow became more obvious in the inlet. The inertia also led to an increment in the film thickness, of which the center film thickness increased up to 5.14% when the load increased from 300 to 700 N. The experimental result also showed that the center film thickness considering the inertia effect was close to the experimental result.

     

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