According to the meshing characteristics of load sharing of double helical gears

the method of loaded tooth contact analysis(LTCA) of double helical gears was proposed.Firstly

tooth surface normal flexibility matrix caused by unit normal force of tooth surface point and the additional matrix caused by the deformation of shafts were obtained through the finite element calculation.The additional matrix was added to the tooth surface flexibility matrix and the normal flexibility matrix of gear system was generated then.Secondly

the loaded tooth contact analysis was completed.In the analysis process

the finite element

the programming method and the axial displacement of pinion were combined.Finally

an experiment that compared the result of tooth surface light contact and loaded transmission error of measure with calculation was provided

which verified the correct of method proposed.