Mechanics of Materials (MindTap Course List)
9th Edition
ISBN: 9781337093347
Author: Barry J. Goodno, James M. Gere
Publisher: Cengage Learning
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Chapter 8, Problem 8.5.28P
A crank arm consists of a solid segment of length bxand diameter rf, a segment of length bltand a segment of length byas shown in the figure. Two loads P act as shown: one parallel to — vand another parallel to —y. Each load P equals 1.2 kN. The crankshaft dimensions are A] = 75 mm, fr> = 125 mm, and b3= 35 mm. The diameter of the upper shaft isd = 22 mm,
(a) Determine the maximum tensile, compressive, and shear stresses at point A, which is located on the surface of the shaft at the z axis.
(b) Determine the maximum tensile, compressive, and shear stresses at point B, which is located on the surface of the shaft at the y axis
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L length of the adjustable wrench in the figure; Choose a number from 152 to 252 mm that does
not end with a zero. F force also; Choose from 122 to 292N as a non-zero number. Find the
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EN
L = 155 mm
15%
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L mm
a) Momentum = ?
b) Direction = ?
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A crank shaft is operated as shown in the figure. A
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dz
applies a load P to counter. The system is in
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dz
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w = 7.31 [m), dl = 9.69 m], d2 = 7.57 m).
6.14 (m), d5 = 3.7 (m),
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Part 1. Express the reaction forces exerted on the bar by
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[N]
Part 2. Express the reaction forces exerted on the bar by
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In the figure, the machine element located at the C point in the transmission system is radial
and axial loads. These loads; Fr: 500 daN, Fa = 250 daN in addition to this .Testing the load
of the machine element affects the spindle once again up to 100 daN. Loads in the system A
and B are covered by a single row ball bearing. By evaluating what is given;
a-) Calculate the forces acting on the bearings and the required shaft diameter.
b-) Choose the most optimum bearing so that the life of the A bearing will be at least 4000
hours.
For the shaft material in the system; oem = 7 daN/mm2, bearings will operate with 1000 rpm
rotation speed.
Important Note: Axial Load will be carried by the A-bearing
Fa
Fr
A
В
200mm
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220mm
Chapter 8 Solutions
Mechanics of Materials (MindTap Course List)
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