Abstract:

In this paper two-dimensional numerical methods for simulating shape formation of self—forging—fragments are studied. The dynamical equations are based on an perfectly-elastic，ideally plastic-fluidmodel. The emphasis is put on the processing techniques of different calculating methods such as the artificial viscosity,the calculation of sliding surface, and regionalization (re-netting). A numerical example for the shape formation process of the self—forging—fragment is given and compared with experimental X-ray photos, showing good agreement, between them.