Dimension separation spring comparison method for spinning moving grid method

The invention discloses a dimension separation spring comparison method for a spinning moving grid method, and belongs to the field of spinning forming machining numerical simulation. Firstly, a size field of a workpiece grid is designed according to the position of a spinning roller, then a variable-density full-quadrilateral grid is generated on a cylindrical surface according to the size field by a dimension separation spring comparison method, then the grid is projected to a workpiece to generate inner and outer surface grids, and finally internal nodes are obtained through linear interpolation. And connecting the nodes to obtain a final variable density grid. According to the method, the calculation amount of grid node position iteration is greatly reduced by adopting a dimension separation method and a cylindrical surface degradation grid, and the nonlinear degree of an iteration equation is effectively reduced by adopting a linear spring comparison method, so that the locally-encrypted full-hexahedron