Abstract
Lubrication aspects, at the Wave Generator (WG)-Flexspline (FS) interface of Strain Wave Gearing or Harmonic Drive (HD), are investigated. Geometries of ‘coning’ of FS and its variation with rotation are established to incorporate in hydrodynamic lubrication equation based on generalized Reynolds equation. Non-Newtonian fluid parameters are also incorporated to cover up analysis for odd lubrication conditions that HD faces in many applications. Effort has been given to develop the analytical expression for separation of lubrication film and other various lubrication conditions at WG/FS interface with respect to few general boundary conditions. Results of analytical solutions are also verified in Ansys-APDL environment.
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