Assignment 1 - 0.05 135 0.0007 380 0.09 170 0.0008 435 0.15...

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ASSIGNMENT 1 EME1066 Strength of Materials Trimester 2, 2011/12 Problem 1 The linkage to the aircraft landing gear is composed of two horizontal pins A and B fixed by a support and two other pins C and D as shown in the free body schematically depicted in Figure 1. Calculate the shearing stresses produced in the pins at A and B . Given that F BC = R B and each pin has a diameter of d = 25 mm. It is also assumed that each pin is in double shear. Figure 1
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Problem 2 The data shown in the accompanying table are determined from a tensile test of a mild steel specimen. Plot the data and determine: (a) The modulus of elasticity. (b) The yield point. (c) The proportional limit. (d) The ultimate stress. --------------------------------------------------------------------------------------------------- Stress, MPa Strain Stress, MPa Strain ----------------------------------------------------------------------------------------------------- 35 0.0001 245 0.009 70 0.0003 300 0.025 100 0.0005 340
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Unformatted text preview: 0.05 135 0.0007 380 0.09 170 0.0008 435 0.15 205 0.0010 450 0.25 240 0.0012 440 0.30 255 0.0025 420 0.36 250 0.0050 325 0.40 ------------------------------------------------------------------------------------------------- Problem 3 A 6-m-long truss member is made of two 50-mm-diameter steel bars. For a tensile load of 250 kN, calculate: ( a ) The change in the length of the member. ( b ) The change in the diameter of the member. Given: E = 210 GPa, y = 230 MPa, = 0.3 Problem4 If the top of a 200-mm-diameter steel well drill pipe having shear modulus of elasticity G = 80 GPa rotates through 90 at a depth ( L ) of 400 m, calculate the maximum shearing stress in the twisted pipe. Problem 5 Two transmission shafts-one a hollow tube with an outer diameter of 100 mm and an inner diameter of 60 mm, the other solid with a diameter of 100 mmare each to transmit 200 kW. If both operate at f = 6 Hz, compute the highest shearing stresses in each. End...
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This note was uploaded on 01/01/2012 for the course ENG 101 taught by Professor Who during the Spring '08 term at Air Force Institute of Technology, Ohio.

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Assignment 1 - 0.05 135 0.0007 380 0.09 170 0.0008 435 0.15...

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