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Xiong Y.,Nanjing High Speed Geer Manufacturing Co. | Sun Y.,Nanjing High Speed Geer Manufacturing Co. | Zhang H.,Nanjing High Speed Geer Manufacturing Co.
Chongqing Daxue Xuebao/Journal of Chongqing University | Year: 2015

The computation of a micro-pitting load capacity of gears for wind power is carried out by a model based on the numerical thermal elastohydrodynamic lubrication (TEHL) contact theory. The difference of local lubricant film thickness and safety factor against micro-pitting between TEHL and ISO/TR 15144-1 are compared. The oil film pressure distributions, film shapes, temperature distributions are calculated under some varied points on the path of contact. The results show that calculation of micro-pitting load capacity of gears of wind power based on TEHL contact theory is feasible; the local lubricant film thickness calculated by TEHL contact theory is less than by ISO/TR 15144-1; and it is unnecessary to consider the pressure distributions and contact pattern change caused by TEHL when determining the modifications of main gears of wind power using loaded contact analysis. ©, 2015, Chongqing Medical University. All right reserved. Source


Sun Z.,Nanjing High Speed Geer Manufacturing Co. | Sun Y.,Nanjing High Speed Geer Manufacturing Co. | He A.,Nanjing High Speed Geer Manufacturing Co. | Wang S.,Nanjing High Speed Geer Manufacturing Co.
Chongqing Daxue Xuebao/Journal of Chongqing University | Year: 2015

By inputting reduced matrix of stiffness and mass, a dynamic model including flexible housing, ring gear and carrier for a 3 MW wind turbine gearbox is established based on MASTA. And analysis results show that the kinetic percentage of housing is maximum near the gear mesh frequency and response is maximum at the 1st mesh frequency of HSS gear. The analysis results show certain agreement with vibration test results. This paper can provide reference for avoiding vibration in gearbox design. ©, 2015, Chongqing Medical University. All right reserved. Source

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