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Question: 32 a thin tube with outer diameter do 30...

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3.2 A thin tube with outer diameter Do = 3.0 cm and inner diameter Di = 2.9 cm is made from Acetal (Delrin 500). If the plastic tube is pulled over a steel rod with diameter D 3.0 cm, calculate the hoop stress in the plastic tube using (i) linear (E= 3 Gpa) analysis, (ii) nonlinear (E: 3.1 Gpa and E, = 41.7 Gpa) analysis. For the thin plastic tube, neglect the radial stresses.

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