ExamSolution1 - ME471 Exam 2 NAME Closed book and notes May use ONE 8.5x11 in page of your own notes Problem 1 Referring to the figure which of

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Unformatted text preview: ME471 Exam 2 NAME Closed book and notes. May use ONE 8.5x11 in page of your own notes Problem 1 Referring to the figure, which of the stress components ox oy oz Txy txz or Tyz in the stress 0' T T x xy x2 matrix 6 = Txy O‘y Tyz is NOT zero?. sz Tyz 0-2 Answer by entering an “X” in the location in the matrix where the stress component is not zero. You must consider all axial, bending, torsion and shear due to bending possibilities. DO NOT GUESS: an X in the wrong location will count against a correct answer! 1. At position A non-zero entries are: 6 = «x 2. At position B non—zero entries are: c = 3. At position C non-zero entries are: 0 = X m mew} Ono? gEnDW‘g 8m” he fl“ NESTWL A’XLE . 7 . See-452, Fem/t fiEQDéefér A, 0W1 Sewwfi N X? PM 5%A’L Foch may“? we {Sew/1357; Am 1: )9 =§ 6*} GM»; new We not agents /> gummummnm/ {5&6 ME471 Exam 2 NAME Closed book and notes. May use ONE 8.5Xll in page of your own notes Problem 2 Frictionless hearing The l in diameter shaft in the figure is supported at one end by a frictionless bearing and at the other by a clutch that prevents it from rotating. The shaft supports two 4 in radius pulleys, each carrying loads as shown. Here you may ignore shear due to bending 1. Sketch in the space below the shear stress (V) and the bending moment (M) diagrams for bending in the XY and the XZ planes AND the torsion (T) diagram. 91+ Retina?) 6001 S.‘ 3 Riv/xii Bending in XY plane Bending in XZ plane w 'i continues T: [30134- 4» not): 4 seems ME471 Exam 2 NAME Closed book and notes. May use ONE 8.5xll in page of your own notes 2. Compute the maximum bending stress (0) and torsion shear stress (T) in section at x=5. Enter your result in the space below. A? X45 Hw}1m H1: gm Tréeos is,” (X29 W 6’ eewcw are) WVMo‘TtWé’ c2560 25% H z: m = 31(23‘19} \ W :3 ’ 5" , L176; as: my 23 "i 53 a: I“ 9 £3“ s meow) 1: 20.43155) 3% We” mm At x=5 e=%.4r KS2 1:30.55» 3. Compute the principal stresses at the critical position in the cross section at x=5. Ignore shear stresses due to bending. At x=5 0'1— t5) 02: "’2 3'8 535} in) m ME471 Exam 2 NAME Closed book and notes. May use ONE 8.5X11 in page of your own notes Problem 3. The shaft in the figure is is static equilibrium under the loads P and Qand R, which may cause bending, axial and/or torsional stresses at positions A, B, C and D. Use the matrix below to state which type of stress is caused by each load at each point, by entering the words “BENDING”, “AXIAL” and/or “TORSION” in the corresponiding box. frictionl DO NOT GUESS: an entry in the wrong bemng location will count against a correct answer! V frictionless bearing Position A Position B Position C Position D Load P g T” g t T Load Q E e A 7/3?" A Load R B a» E w l , l L ...
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This note was uploaded on 07/25/2008 for the course ME 471 taught by Professor Diaz during the Spring '06 term at Michigan State University.

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ExamSolution1 - ME471 Exam 2 NAME Closed book and notes May use ONE 8.5x11 in page of your own notes Problem 1 Referring to the figure which of

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