Firstly, the grid independence verification process of several sets of “normal contact of two elastic cylinders” is studied, and the general conclusion that the grid size threshold of the contact area is 1/4 times the half-width of the contact zone when the contact pressure and half-width of the contact zone are verified by the grid independence is summarized, and the conclusion is extended to the contact problem of helical gears. The research shows that the meshing of contact zone based on this conclusion can obtain reasonable contact pressure and half-width of contact zone of helical gear without grid independence verification, thus greatly improving the simulation efficiency.
1) Through the grid independence verification of the normal contact problem of two elastic cylinders, the general conclusion that the grid size threshold of the contact area is 1/4 times the half width of the contact zone when the grid independence verification is passed in Hertz contact simulation is obtained.
2) The conclusion of mesh control in the contact area in the verification of mesh independence of the normal contact problem of two elastic cylinders is extended to the contact problem of helical gears. The simulation results show that this conclusion is valid in the contact simulation of helical gears. Based on this conclusion, the mesh division of the contact area of helical gears can obtain reasonable contact pressure and half-width of the contact zone of helical gears without solving the mesh independence verification process.
3) The determination of the grid control strategy is of guiding significance for the efficient parameterization of helical gear pair meshing simulation.