Comparison of the positive and negative two points incremental forming quality

The forming method of the positive and negative two points incremental forming is different, so the forming quality will be different. The forming processes on the positive and negative two points incremental forming were simulated numerically by using the Finite Element Analysis software ANSYS/LS-DYNA, and the forming quality was compared and analyzed according to the thickness, profile curve, and equivalent stain. The research shows that the thickness, equivalent strain and contour accuracy of the positive two points incremental forming are better than that of the negative two points incremental forming. Therefore, the forming quality of the positive two points incremental forming is better.