For two surfaces in sliding contact, heat is usually generated by friction between contact areas. The frictional heat generation per unit contact line is:
Where, f is the friction coefficient; PC is Hertz contact stress; Others are the same as above.
Then the heat generated by the main and driven wheels is:
In a meshing cycle, the tooth surface only generates heat by friction during its meshing, that is, the tooth surface does not generate heat by friction at all times. Therefore, when calculating the body temperature field of spiral bevel gear teeth, it is necessary to take the average value of the friction heat generation of spiral bevel gear teeth to simplify the calculation. The average heat generation calculation formula is as follows:
Where, Tm is the single-tooth meshing cycle; Z is the number of teeth; Others are the same as above.