Q5: A hydraulic punching machine is used to make holes in a plate using two steel...

Q5: A hydraulic punching machine is used to make holes in a plate using two steel punches having different diameter. By applying a compressive stress of 37 x103 kN/m2 using a punch of diameter 50 mm, the maximum shear stress developed in the plate was found to be 290 N/mm2. Suggest the value for thickness for the plate suitable for this loading condition.

What will be the change in the shear stress when a compressive force of 85 kN is applied on the plate of same thickness using another punch having diameter 12% more than the first one? Check which one of the steel punches used is safe against shear, if the permissible safe shear stress on the plate based on the design conditions is limited to 300 N/mm2. Based on the results, discuss how the thickness of the plate and the diameter of the punch can be modified to withstand the safe

shear stress

Expert Solution

Ally Wells answered 1 year ago

A hydraulic punching machine is used to make holes in a plate using two steel punches...

A hydraulic punching machine is used to make holes in a plate using two steel punches having different diameter. By applying a compressive stress of 37 x103 kN/m2 using a punch of diameter 50 mm, the maximum shear stress developed in the plate was found to be 290 N/mm2. Suggest the value for thickness for the plate suitable for this loading condition. What will be the change in the shear stress when a compressive force of 85 kN is applied...

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