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首页> 外文期刊>Tribology International >Effect of imperfect coating on the elastohydrodynamic lubrication: Dislocation-like and force-like coating-substrate interfaces
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Effect of imperfect coating on the elastohydrodynamic lubrication: Dislocation-like and force-like coating-substrate interfaces

机译：不完美涂层对弹性流动性润滑的影响：脱位样和力的涂层基板界面

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摘要

The commonly existed imperfect coatings may cause the displacements and forces transmitting discontinuously at the coating-substrate interface. This paper reports an elastohydrodynamic lubrication (EHL) model of ball coated half space with coupled dislocation-like and force-like coating-substrate interface. Reynolds equation is solved to obtain the pressure. The surface elastic deformation and subsurface stress are calculated with the discrete convolution and fast Fourier transform (DC-FFT) method with the influence coefficients (ICs) obtained through corresponding frequency response functions (FRFs). The model is validated by the available data, and then implemented to study the pressure, film thickness, and subsurface stress distributions under imperfect coating-substrate interfaces of dislocation-like, force-like, and the coupled conditions, with various displacements and stresses jumping coefficients.
机译：通常存在的不完美涂层可以使位移和力不连续地在涂层基板界面上传输。 本文报告了球涂层半空间的弹性流体动力学润滑（EHL）模型，其耦合位错和力样涂层衬底界面。 Reynolds方程得到解决以获得压力。 利用通过相应的频率响应函数（FRFS）获得的影响系数（IC）的离散卷积和快速傅里叶变换（DC-FFT）方法计算表面弹性变形和地下应力。 该模型由可用数据验证，然后实施，以研究在不完全的涂层基板界面下的压力，薄膜厚度和地下应力分布，以及各种位移和跳跃的各种位移和应力 系数。

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