(b) A straight bead is being formed on a 1 mm thick aluminium sheet in a 24mm diameter die as shown in figure below. The

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(b) A straight bead is being formed on a 1 mm thick aluminium sheet in a 24mm diameter die as shown in figure below. The

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B A Straight Bead Is Being Formed On A 1 Mm Thick Aluminium Sheet In A 24mm Diameter Die As Shown In Figure Below The 1
B A Straight Bead Is Being Formed On A 1 Mm Thick Aluminium Sheet In A 24mm Diameter Die As Shown In Figure Below The 1 (104.56 KiB) Viewed 16 times
(b) A straight bead is being formed on a 1 mm thick aluminium sheet in a 24mm diameter die as shown in figure below. The yield strength is 90MPa and stiffness is 70.3 GPa. Considering springback, calculate the outside diameter of the bead after it is formed. Die [5 marks] (c) If the same thickness of aluminium sheet is bent to a radius 12mm, and the final bend angle after springback is 70°. What is the required bend angle? [3 marks] (d) Describe Die-cutting and Fine Blanking using appropriate diagrams [6 marks]
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