Final_Exam

# Final_Exam - Final Exam ME 414 Mechanical Design I Spring...

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Final Exam ME 414 Mechanical Design I Spring, 2011 Instructions: This exam consists of two problems worth a total of 60 points. The only materials permitted are the textbook (Shigley et al .), a calculator and a total of three (3) 8.5"x11" HANDWRITTEN crib sheets, which MUST be turned in with the exam. 1. At the cross section shown in the figure, an automobile axle supports the following internal forces and moments: F z = 500 lb, F y = -600 lb, M x = -5000 lb-in, M z = 4000 lb-in. The axle is made of AISI 1030 cold drawn steel (S y = 64 ksi, S ut = 76 ksi). a) Determine the magnitude and direction of all stress components acting at point A. Sketch stress element A in the appropriate plane, and clearly indicate the magnitude and direction of each nonzero stress component. (5 points) b) Based on the Von Mises (distortion energy) criterion, determine the factor of safety against yielding at point A. (5 points) c) Determine the magnitude and direction of all stress components acting at point B. Sketch

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Final_Exam - Final Exam ME 414 Mechanical Design I Spring...

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