Finite element analysis of sheet metal U-Bending using free form surfac

الملخص EN

This paper deals with the optimization of tools geometry in sheet metal forming U-bending in order to reduce the equivalent strain, equivalent stress, and thickness change after forming.

Free form surface method (Bezier curve, B-spline curve, and NURBS curve) is used to generate the die and punch profile; this technique is accurate to describing the die and punch profile.

A 3D numerical simulation using the Ansys 12.1 FEM code was conducted to understand the effect of die profile in final product.

The results show that the more uniform distributions in strain, stress, and thickness when using same profile radius for die and punch (Bezier curve).