Three-Dimensional UBET Simulation Tool for Seamless Ring Rolling of Complex Profiles

摘要

Simulation of complex ring profiles using an improved Upper Bound Elemental Technique (UBET) is presented in this paper. The profile of the ring is approximated with a collection of triangular-prismatic and rectangular-brick elements. A generalized solution procedure is proposed to find the optimized kinematically admissible velocity field for the unique three-dimensional material flow experienced in shape rolling. Close agreement between numerical results obtained from simulations and available data for profile ring rolling has been observed for high-temperature aerospace materials. It has been demonstrated that the complex ring profiles used in aerospace industry can effectively be simulated using the current software tool.