Increasing speed gearbox is one of the most important components of wind-turbine.Gear design directly affects the operating life and reliability of gear-box.Because of its special operating environment

gear is often caused by failure.Based on the 1.5MW wind-turbine as the research object

the finite element model of the gear is established

the stress analysis of the use of ANSYS

the gear maximum stress and stress position are verified

a scientific reference for the optimum design of gears is provided.