Main bearing

Main bearing

Dimensional Analysis and Dynamic Similitude

Published in William S. Janna, Introduction to Fluid Mechanics, Sixth Edition, 2020

The main bearing on an engine crankshaft is lubricated with engine oil. The torque due to friction To depends on shaft diameter D, rotational speed ω, lubricant viscosity μ, and density ρ. Use dimensional analysis to derive an expression for torque.

Optimization of tank engine crank shaft material properties

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Journal Information

Published in Mechanics Based Design of Structures and Machines, 2023

Abdel-Salam G. Abdel-Salam, Ayesha Sohail, Lubna Sherin, Qurat Ul Ain Azim, Ayesha Faisal, Mohamed Abdelsabour Fahmy, Zhiwu Li

The boundary conditions are mentioned as follows: The main bearing surfaces of the crankshaft are restricted from moving in the regular angles; that is, it allows the crankshaft to rotate and slide on the surfaces of the bearing.At the rear axial bearing surface, the axial movement is restricted.The crankshaft is placed at the rear area where the flywheel is positioned.

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Dimensional Analysis and Dynamic Similitude

Optimization of tank engine crank shaft material properties