Mechanics of Materials (10th Edition)
10th Edition
ISBN: 9780134319650
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 8.2, Problem 8.67P
Due to internal gearing, this causes the block to be subjected to a compressive force of 80 lb. Determine the normal-stress acting in the frame at points along the outside flanges A and B. Use the curved-beam formula to calculate the bending stress.
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The simply supported joist is used in the construction of a floor for a building. In order to keep the floor low with respect to the sill beams C and D, the ends of the joists are notched as shown. If the allowable shear stress is tallow = 350 psi and the allowable bending stress is sallow = 1500 psi, determine the height h that will cause the beam to reach both allowable stresses at the same time. Also, what load P causes this to happen? Neglect the stressconcentration at the notch.
The axle of the freight train is subjected to loadings as shown below. The diameter of the axle is 137.5 mm.
If it is supported by two journal bearings at C and D, determine the maximum bending Stress. Include a FBD, SFD and BMD using either the section or graphical method. Draw a cross-section of the shaft and indicate the points of maximum tension and compression.
A member having the dimensions shown is used to resist an internal bending moment of M kNm.
Determine the maximum stress in the member if the moment is applied (a) about the z axis (as shown)
(b) about the y axis. Sketch the stress distribution for each case.
Take:
M=
90
kNm
A mm
A=
200
mm
B=
150
mm
B mm
Solution:
The moment of inertia of the cross-section about z and y axes are
I;-4
1
- AB³
12
(10) m*
I
BA =
(10) m*
Chapter 8 Solutions
Mechanics of Materials (10th Edition)
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