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1. A steel sheet metal of 0.0265-in thick is bent to a radius of 0.5-in. Assuming...

1. A steel sheet metal of 0.0265-in thick is bent to a radius of 0.5-in. Assuming that its yield stress is 300 MPa, calculate (a) the radius of the part after spring back and (b) the required bend angle to achieve a 90o bend after spring back has occurred.

2. Prove that Engineering strain of a sheet metal is

                         e = 1 / [ ( 2 R / t ) + 1 ]

Engineering   Chemical-Engineering   
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