リング圧縮における一方向ねじりモーション付加による塑性変形挙動の変化

抄録

Plastic deformation behavior of ring-shaped aluminum workpiece is investigated in axial compression with one-way torsional moment at room temperature. One-way rotation with a maximum angular speed of 0.5 rpm around a compression axis is simultaneously applied with an axial compression speed of 0.1 mm/s. The ring workpiece is plastically deformed in the outer diameter direction especially at the end surfaces of the ring workpiece by applying one-way torsional moment. As the result, the barreling of the ring workpiece is reduced. According to experimental and finite element simulation results, it is confirmed that the superposition of the torsion moment has potential to control the plastic deformation of the workpiece.