Home » Influence of Thermal Distortion on Spur Gear Tooth Contact
Influence of Thermal Distortion on Spur Gear Tooth Contact
November 11, 2019
The increase of efficiency in automotive gear transmissions has been a key subject of research in the past decade; to this aim, dip-lubricated gearboxes have been designed with minimized oil levels in search of reduced churning power losses and maximum power-to-weight ratios. However, when such gears' running conditions reach the highest pitch line velocities and torques, bulk temperatures increase rapidly, resulting in reduced oil film thickness, higher surface shear stresses and an increased number of asperity contacts - all of which may lead to a premature failure of the gear pair. In this paper the effects of thermally induced geometry distortions on load distribution and transmission error have been analyzed.