S.V. Subrahmanyam, Assoc Prof ,Dept of Maths, has authored a paper and was published in INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE & ADVANCED TECHNOLOGY
Abstract:
Hydrodynamic lubrication has a significant role in wear and friction of
bearings. It is also known that load and speed on bearings can influence the
lubrication mechanism. The present work focuses on this mechanism based on
qualitative analysis of thermo hydrodynamic lubrication of asymmetric rollers
with non-Newtonian power law incompressible lubricants including Newtonian as
well. Here it is discussed theoretically for heavily loaded rigid system with
cavitations; where the consistency of the power law lubricant is assumed to
vary with the mean temperature. The fluid flow equations such as the equation
of motion along with continuity and heat energy equation are solved first
analytically and then investigated numerically by Runge-Kutta Fehlberg method
with step size control together with some reasonable tolerance 10-5. The various bearing
characteristics are presented in the form of tables and graphs so that we can
have an idea how they are varying as per their characteristics. As a result of
this work, it is found that there is a significant difference in temperature,
pressure, load and traction with Newtonian and non-Newtonian fluids.
Keywords: Hydrodynamic lubrication, roller bearing,
Non-Newtonian, Power law.