In order to improve a transmission reverse gear fatigue life

using Hypermesh software

the finite element model is established.Tooth root bending statics stress analysis is carried out by the finite element software Nastran

the reverse gear single tooth bending stress is obtained

and the results are verified by theoretical calculat ion.Based on the finite element stress analysis results

according to the nominal stress fatigue analysis method

reverse gear fatigue life is obtained about by simulation of software Fatigue.Nitrogen treatment and shot peening are put forward

simulat ion results showed that the fat igue life is increased significantly.At the same time

the precision forming technology of processing reverse gear

the production pract ice shows that the reverse gear anti-fatigue characteristics is improved significantly.