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Shear Stress Calculations

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Aluminium alloy blanks are produced from sheet metal by a punching machine that generates a punching force of 30 kN. For sheet metal with a thickness of 3 mm the maximum diameter of the blanks is 13.0 mm.

Determine.

(a) The ultimate shear stress of the aluminium alloy.
(b) The stress on the punch face.

Please show workings and calculations.

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Aluminium alloy blanks are produced from sheet metal by a punching machine that generates a punching force of 30 kN. For sheet metal with a thickness of 3 mm ...

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(see attachment for diagram)

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