7 It is desired to punch a hole of 20 mm diameter in a plate

Last updated: 6/24/2023

7 It is desired to punch a hole of 20 mm diameter in a plate 20mm thick If the shear stress fo mild steel is 30 kg mm the force necessary for punching would be approximately in the range b 15 20 t d 35 40 t a 10 15 t c 20 25 t