ex_mid_1_f08 - ME 382 Fall 2008 Mid-term 1 Monday October 6...

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1 ME 382 Fall 2008 Mid-term 1 Monday, October 6, 2008 This is a closed book exam; students are allowed to use an unmarked copy of the ME382 data book. Answer all questions. Show all calculations (on this exam) for full credit. There are a total of 9 pages to this exam. Use a ruler / straight edge to read from graphs for full credit (marks will be deducted for excessive inaccuracy or sloppy graphs associated with not using a ruler where appropriate.) Name: Section: Honor Pledge:
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2 Question 1 A circular, hollow cylinder is made of an aluminum alloy with a yield stress of 180 MPa. It is subjected to a torque T = 150 Nm and a compressive load P = 12.0 kN. The inner radius of the cylinder is R 1 = 5.0 mm and the outer radius is R 2 = 10.0 mm. The elastic modulus is 70.0 GPa and the Poisson’s ratio is 0.330. (a) What are the normal strains in the hoop and the axial directions? (b) What is the maximum shear strain?
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(c) What is the safety factor against yielding using the von Mises yield criterion? (d)
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ex_mid_1_f08 - ME 382 Fall 2008 Mid-term 1 Monday October 6...

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