Improvement of Blok flash temperature method and its application in prediction of tooth surface temperature of spiral bevel gears
In order to accurately predict the instantaneous maximum temperature of spiral bevel gears tooth surface,a new method for calculating gear flash temperature was proposed.By considering the influence of lubricating oil film on gear flash temperature,the traditional Blok flash temperature method was improved and the calculation formula of gear flash temperature under elastohydrodynamic lubrication was obtained,which made up for the defect that the traditional Blok flash temperature method did not consider lubricating oil film.Then the proposed method was used to calculate the tooth surface flash temperature of a pair of spiral bevel gears in a helicopter transmission system.The numerical results calculated by the proposed method and Joselito's method were respectively compared with those obtained by finite element simulation.The results showed that the difference between Joselito's flash temperature method and finite element method was 12％,and the difference between the proposed method and finite element method was 4％,which verified the accuracy and superiority of the proposed method from various angles,thus providing a theoretical basis for further improving the calculation of gear tooth bonding load capacity.
flash temperaturebody temperature fieldtransient temperature fieldspiral bevel gearfinite element analysis
万方数据
维普
