Grid division method for product with local axisymmetric structure

The invention discloses a grid division method for a product with a local axisymmetric structure. The grid division method comprises the following steps: dividing a rod end joint into an axisymmetric part and a non-axisymmetric part; dividing the rod end joint into a plurality of sub-mechanisms with the same structure, where each sub-mechanism comprises a sub-structure axisymmetric part and a sub-structure non-axisymmetric part; performing two-dimensional section grid division on the axisymmetric part of the substructure; rotating the two-dimensional cross-section grid after grid division into a three-dimensional grid to obtain a three-dimensional grid model of the axisymmetric part of the substructure; associating the grid division nodes of the axisymmetric part of the substructure to the non-axisymmetric part of the substructure; performing grid division on non-axisymmetric parts of the substructures; mapping the three-dimensional grid models of the substructures to complete rod end joint full-model grid di