Page 45 - MetalForming September 2011

Fig. 3
properties, computer simulation can occur. The initial results for the problem part (Fig. 3) nearly match the failures we see in the actual stamping. Since the simulation model now matches our real-world results, we can begin to develop the material gainers.
Establishing gainer size and locations will require some trial and error. The best way to track results is to identify a few nodes on the blank using the finite-element mesh. In this instance, five nodes were identified. The nodes are tracked during forming simulation until achieving the desired results—no failures (Fig. 4).
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Fig. 4
The five nodal locations chosen allow the gainer to be accurately described. The height, shape and angular loca- tion can be determined and the data passed to engineering and the toolroom. Since the initial simulation showed good correlation between the computer model and real-world results, the die maker can proceed with a relatively high level
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