Analysis of Flange Wrinkle in Square-shell Deep Drawing of Anisotropic Sheet

作者：Ohwue Tetsuro^*; Hashimoto Koji; Kuriyama Yukihisa; Ushioda Kohsaku

来源：ISIJ International, 2008, 48(12): 1739-1744.

• deep drawability
• material draw-in
• anisotropy
• lubricant
• FEM simulation
• yield locus
• r-value
• square shell

An FEM simulation utilizing a dynamic explicit code was conducted to investigate the flange wrinkle behavior of square shell deep drawing of anisotropic steel sheets. In the FEM simulation, anisotropy of the r-value is taken account of by using the Barlat-Lian '89 equation. The yield locus diagram and the influence of anisotropy were investigated by changing the combination of the R(00), R(45) and R(90) value. One quarter portion of the 75 mm square punch and 80 mm square die was used in the simulation and frictional coefficient mu=0 (Teflon lubricant condition) was adopted. As a result, the greater the m-value of the yield locus, the greater the yield stress (YS) and the greater the Delta CL value (R(90)-R(00))/R(ave) become, the bigger the flange wrinkle.

• 出版日期2008