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Question

In a blanking operation to produce steel washers, the maximum punch load used is 3×105N. The plate thickness is 5 mm and percentage penetration is 25. What is the work done during this shearing operation?

A
325 J
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B
475 J
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C
375 J
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D
350 J
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Solution

The correct option is C 375 J
Work done=Fmax×pt
=300kN×0.25×5=375J

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