| Abstract: | The elastic-viscoplastic constitutive equations of Bodner-Partom have been implemented in a nonlinear finite-element computer program. Using the modified program, a series of computer simulations of a bottom die in a hot-die forging operation has been performed. The results demonstrate that the elastic-viscoplastic finite-element program is particularly suited for high-temperature structural-analysis applications for components which are subjected to complex arbitrary deformation and thermal histories such as those encountered by a forging die or workpiece. In addition, these simulations establish the local stress and strain values at various critical locations, the displacements of the die surface, and the critical loads for potential failure of the forging die. |
