Vibration studies of lubricated textured point contacts of bearing steels due to surface topographies: Simulations and experiments

摘要

Vibration studies at the lubricated textured point contacts formed between bearing steels have been reported under the unidirectional sliding motion.The flat textured surface has been simulated using the fractal geometries. For vibration studies generic lubricated point contact is modeled as single degree of freedom system keeping together a non-linear spring and viscous damper in parallel in place of lubricating film. The stiffness of point contacts is computed using finite element analysis software. The damping is obtained experimentally through the acceleration response. Good matching between the simulated and experimental vibration results have been observed at the contact resonance frequencies. In presence of certain textures, vibration reduces due to the enhanced value of damping in comparison to the contacts having smooth surfaces. (C) 2016 Elsevier Ltd. All rights reserved.