Planchet planchet is struck. After striking, it becomes a coin and is no longer a planchet. Occasionally, a planchet will escape the mint without having been struck. This is a blank planchet error, and is usually worth a few dollars for modern coins. Occasionally, blank planchets can be rare and valuable, such is the case for Morgan Dollar blank planchets, although authentication is highly recommended for such pieces as they would be fairly easy to counterfeit. Planchet A planchet \ˈplan-chət\ is a round metal disk that is ready to be struck as a coin. An older word for planchet is flan.
Sheet metal forming simulation address a tearing problem in a metal stamping operation. A simple simulation model was created to determine the effect of blank edge radius on the height to which the material could be formed without tearing. Based on this information a new die was designed that solved the problem. There are lots of sheet metal programs available in the industry as SolidWorks and LITIO. Sheet metal forming simulation Today the metal forming industry is making increasing use of simulation to evaluate the performing of dies, processes and blanks prior to building try-out tooling. Finite element analysis (FEA) is the most common