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Shear Strain

It is require...

Question

It is required to punch a hole of diameter $10 m m$ on a sheet of thickness $3 m m$ . The shear strength of the work material is $420 M P a$ . The required punch force is

A

19.78 k N

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B

39.56 k N

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C

98.9 k N

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D

359.6 k N

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Solution

The correct option is B $39.56 k N$
Punching force $= π d t τ$
$= π \times 10 \times 3 \times 420 = 39.58 k N$

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