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A sheet metal with a thickness of 3 mm has a limiting drawing ratio of 2.4....

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Mechanical Engineering

A sheet metal with a thickness of 3 mm has a limiting drawingratio of 2.4. Calculate the largest circular blank that could beused successfully in deep drawing a cylindrical cup with aninternal diameter of 75 mm. Also calculate the punch force requiredwhen the sheet metal has an ultimate tensile strength of 530MPa.

Answer & Explanation Solved by verified expert
3.8 Ratings (592 Votes)
a In deep drawing process the large tensilestresses experienced by the cup wall leads to thinning and at timestearing Hence    See Answer
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