In order to study the contact stress of gear and rack

by using the contact stress calculation formula in the method of gear load capacity calculation

a contact stress of a pair of gear and rack is calculated

and the finite element model of the gear and rack is established by using ANSYS software.Then

the contact stress at different meshing location is separately solved.The calculation result of single meshing is approaching to the theoretical calculation value

it shows that the analysis accuracy of statics model is well

and the result that contact stress of single meshing is far greater than double meshing is obtained.