2906 成形加工物理シミュレーションによる3次元非定常塑性流動の実時間測定と可視化(S31-2 技術開発と支援技術,S31 塑性加工技術の動向とその展開)

抄録

We constructed the physical forming simulation system by which the non-steady state plastic flow could be measured and visualized in the three-dimensional coordinate system. The workpiece was made with the wax and the die with epoxy resin in the present system. The non-steady state plastic flow conditions were measured with regard to actual process time in a forming process by using the tiny iron particles (markers) embedded in the workpiece and the electromagnetic wave measurement system. The system holds distinctive advantage that the deformation characteristics of a workpiece and boundary conditions between the workpiece and tool are taken into account in the results automatically. As an application example, the plastic flow conditions in the forging process of a helical gear were measured and visualized by the present system, and we confirmed that the non-steady state plastic flow condition in a forming process could be measured successfully by the system.