Compute the force required to punch out a rectangular

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Reference no: EM13137631

Force Required to Punch a Hole into an Aluminium Sheet

Question 1:

(a) Calculate the force required to punch out a rectangular hole 100m x 50mm in a 2mm thick aluminium sheet. The ultimate strength in shear is 125 MN/m^2.

(b) If the maximum force which can be exerted by the press is 45kN, what is the greatest thickness that can be punched out?

Question 2:

Two co-axial shafts are to be connected by a flanged coupling having six 6mm diameter bolts equally spaced on a PCD of 200mm. If the maximum permissible shear stress in the bolt material is 180 MN/m^2, find the factor of safety for the bolts if the coupling transmits a torque of 2KNm.

Reference no: EM13137631

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