Mech eng with a manufacturing option. Work in the fire protection field now doing fluid calcs, fire and smoke modelling, sprinkler systems etc.
I'll admit, I read his question wrong, I thought he was trying to indent something. The scalaped punch is complex too, they give a bit of room for the material to move into so it can more cleanly shear the face. If I remember right, poisson's ratio is part of the calc for how thick you can cleanly punch. The forces in the steel near the edge of the punched hole are very complex.
What pressure is he trying to figure out? Its not the same everywhere on the punch face.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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