Exam_1_sample_questions

# Exam_1_sample_questions - the pin is 19 ksi a b c F An...

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A load of P = 200 lb is applied to the lever arm at D as shown. The cable AB has a diameter of 1/2 in. and the pin at C has a diameter of 3/8 in. Calculate: a) the average normal stress in the cable AB, b) the average shear stress in the pin at C, and c) the factor of safety if the system is expected to fail when the average normal stress in the cable reaches 36 ksi or the average shear stress in the pin reaches 27 ksi. a) __________________ b) __________________ c) __________________ 10 in. 7 in. 24 in.

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A rectangular bar is pinned at one end and subjected to an axial load F = 60 kips at the other end. The original dimensions of the bar are L = 8 ft, w = 6 in., t = 2 in. . Calculate: a) the average normal stress in the bar b) the factor of safety under this load if the failure limit on normal stress in the bar is 37 ksi c) the smallest safe pin diameter to the nearest ¼ inch if the limit on average shear stress in

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Unformatted text preview: the pin is 19 ksi. a) __________________ b) __________________ c) __________________ F An initially rectangular element of balloon material with dimensions shown is deformed by the balloon animal making process. Calculate the shear strain at point A with respect to the horizontal and vertical axes and the normal strain along the AB axis. 75 74 200 203 5 Dimensions in mm _________________ __________________ An initially rectangular element of a material is deformed into the shape shown with dashed lines. Find d) the normal strain along AB e) the x-y shear strain at point A. The original coordinates are A (0,0) mm; B (0,3000) mm; C (4000, 0) mm The deformed coordinates are A (0,0) mm; B’ (-157, 2992) mm; C’ (4018, 140) mm The angles shown are β 1 = 35.0 (10-3 ) radians β 2 = 52.3 (10-3 ) radians y x A B C d) _____________________ e) _____________________ β 2 β 1...
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Exam_1_sample_questions - the pin is 19 ksi a b c F An...

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