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When a circular hole of diameter 40 mm is punched out of a 1.5 mm thick metal plate, the shear stress needed to cause fracture is 100 MPa. Determine (a) the minimum force to be applied to the punch, and (b) the compressive stress in the punch at this value.

When a circular hole of diameter 40 mm is punched out of a 1.5 mm thick metal plate, the shear stress needed to cause fracture is 100 MPa. Determine (a) the minimum force to be applied to the punch, and (b) the compressive stress in the punch at this value.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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MFa (b) 0.002 or 0.20%] 5. When a circular hole of diameter 40 mm is punched out of a 1.5 mm thick metal plate, the shear stress needed to cause fracture is 100 MPa. Determine (a) the minimum force to be applied to the punch, and (b) the compressive stress in the punch at this value. la th [(a) 18.85 kN (b) 15.0 MPa] the 6. A rectangular block of plastic material 400 mm long by 15 mm wide by 300 mm high has its lower face fixed to a beneh and a force of 150 N is applied to the upper face and in line with it. The upper face moves 12 mm relative to the lower face. Determine (a) the shear stress, and (b) the shear strain in the upper face, assuming the deformation is uniform. ne for pla wh sai ing line for con Stra [(a) 25 kPa (b) 0.04% or 4%] a pa for
Transcribed Image Text:MFa (b) 0.002 or 0.20%] 5. When a circular hole of diameter 40 mm is punched out of a 1.5 mm thick metal plate, the shear stress needed to cause fracture is 100 MPa. Determine (a) the minimum force to be applied to the punch, and (b) the compressive stress in the punch at this value. la th [(a) 18.85 kN (b) 15.0 MPa] the 6. A rectangular block of plastic material 400 mm long by 15 mm wide by 300 mm high has its lower face fixed to a beneh and a force of 150 N is applied to the upper face and in line with it. The upper face moves 12 mm relative to the lower face. Determine (a) the shear stress, and (b) the shear strain in the upper face, assuming the deformation is uniform. ne for pla wh sai ing line for con Stra [(a) 25 kPa (b) 0.04% or 4%] a pa for
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