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Abstract: A complete numerical solution for the transient
thermoelsatohydrodynamic lubrication problem of an involute spur gear is
obtained by using simplified multigrid method. The lubricant is assumed
to be Newtonian fluid and the surface roughness of gear teeth is
ignored. The load is first assumed to be carried by either two pairs of
gear teeth or by only one pair. This transition is modelled as a step
variation of the load by simplifying the experimental load spectrum. The
results show that thermal effects can strongly influence the approach
and recess point film thickness. The maximum pressure, the maximum
friction coefficient and the highest film temperature all occur in the
vicinity of pitch point. The minimum film thickness usually occurs at
the approach point except reduction ratio equals to one. The film
temperature and the friction coefficient are influenced by the slip
ratio, velocities and the load.
Key words: Involute spur gear Multigrid method Transient
thermoelastohydrodynamic lubrication
CLC No: TH132.41
国家自然科学基金(50175054)和山东省自然科学基金(Z2003F01)资助项目. Received 20031014, received
in revised form 20040515
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