In this field, the user chooses to perform stamping simulation using either CONTACT OFFSET algorithm or physical tool geometry. The user may turn on the radio button of either the Upper or Lower option if to use the CONTACT OFFSET algorithm. As illustrated in Figure 8.3.4(a), the contact interfaces of both punch and binder are offset by (2.2*t) if the Upper option is chosen. Similarly, the contact interfaces of die is offset by (2.2*t) if the Lower option is chosen, as illustrated in Figure 8.3.4(b).

Note: The mesh of punch and binder are duplicated from the die mesh if CONTACT OFFSET algorithm is adopted in stamping simulation.

(a)  Using DIE geometry as reference for contact offset

(b)  Using PUNCH & BINDER geometry as reference for contact offset

(c)  Using both DIE & PUNCH physical geometry

Figure 8.3.4  Blank Reference Surface

If the user chooses to perform the stamping simulation using physical tool geometry, turn on the radio button of Upper&Lower illustrated in Figure 8.3.2. It is recommended to perform stamping simulation using physical tool geometry if springback is a primary concern.