Impact Pressure/Energy for indentation

[donsrno1]

I'm trying to find what pressure or energy would be required to indent copper by 1mm. To be more specific it would be for a piece of copper sheet that was about 1mm thick and resting on some dust like particles so nothing too hard underneath. It would be struck by a pin like object that had a rounded end of about 1mm diameter.

If anyone could help with what the best way to calculate this would be it would be much appreciated.

Thanks.

 

[Goahead]

If you can specify the shape and the dimensions of the indenter you want to use, you might be able to set up a simple test with any hardness testing machine, setting the support as you wish.
Note that different tempers of copper may give different results.

http://www.welding-advisers.com/

 

[unclesyd]

You might want to checkout this paper. Even though it concerns a different problem it uses the "Petry" formula.

http://users.rcn.com/harwood.ma.ultranet/t17.html

 

[salmon2]

This is a tough question to me. The result worths a paper.