Aiming at the disc slitting process of sheet metal,a 2D model of the disc slitting process is established and the deformation and fracture process of 304 stainless steel sheet is simulated based on the Oyane ductile fracture criterion by using the DEFORM-2D finite element analysis software.The occurring and propagating of the crack,the material fracture mechanism and the topography features of the slitting surface are studied.Based on the variation of the mean stress of the sheet metal in the disc slitting ...