Cutting Mechanism of Aluminum Foil on Underlays during Wedge Shearing Process

抄録

This paper reports for the cutting mechanism of a thin worksheet on a flexible underlay. To study a cutting performance of a thin sheet with flexible underlays, a 42° center bevel blade indentation test to a 10μm thickness aluminum foil mounted on several flexible underlays were carried out experimentally and numerically. For discussing the effect of the rigidity and thickness of underlay on the cutting characteristic of worksheet, an elasto-plastic finite element analysis was applied to. The following were obtained: (i) the cutting characteristic of worksheet depends on the ratio of worksheet’s yield stress by underlay’s yield stress σ_Ys/σ_Yu; (ii) the separation of worksheet was available for σ_Ys/σ_Yu<4 and it depends on the thickness of underlay.