EFFECT OF MICRO DIMPLE AND ELECTRICALLY CONDUCTING COUPLE STRESS FLUID IN EHL LINE CONTACTS
This present study investigates the influence of micro textures and coupled fluid i.e. magneto hydrodynamic coupled stress fluid on the performances of EHL characteristics line contacts. Micro-textured of different shapes are provided on the contact surfaces operating with coupled fluid. The solution of Stokes micro-continuum for couple stress and modified Reynolds equation and magneto hydrodynamic fluid are combined to obtain mathematical model. The mathematical model has been solved with the finite element analysis technique. It has also been shown that a textured contact surface tends to lower the coefficient of friction. Providing micro textures on contact surfaces, remarkable enhance the performances of EHL characteristics line contacts. Couple fluid also significantly increases the contact surface's ability to support loads and inhibits the development of thin films, both of which could occur when surfaces are in contact with each other. Results show that the coupled stress and magnetic field effect, induced by micro dimples, has a remarkable influence on performances of EHL line contacts.
EHL, Line Contact, Couple Stress Fluid, Magnetic Micro Dimples, Hartman Number, FEA