Investigation of a slab method analysis and FEM simulation on rotating compression forming of ring

An investigation into the compression forming of a billet using the commercial code SUPERFORM is developed. The work-piece of the ring billet compressed between the upper and lower dies is meshed by a hexagon rigid-plastic element. The numerical simulation based on the FEM is also compared to results obtained with the slab method. In the slab method analysis, the stress distribution of the work-piece is estimated assuming coulomb friction between the dies and the work-piece. The effects of frictional coefficient, rotating angular speed, reduction and aspect ratio upon the compression force, the effective stress and the effective strain, are discussed. For verifying the validity of these models, an aluminum alloy A6061 ring billet is examined in the experiment of rotating compression forming of ring. The analytical results provide a good agreement with the experiment and useful knowledge of design of the compression forming of ring billet.