Mechanics of Materials (MindTap Course List)
9th Edition
ISBN: 9781337093347
Author: Barry J. Goodno, James M. Gere
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 5.11.5P
A box beam is constructed of four wood boards as shown in the figure part a. The webs are S in, x 1 irt and the flanges arc 6 in. X 1 in. boards (actual dimensions), joined by screws for which the allowable load in shear is F = 250 lb per screw.
- Calculate the maximum permissible longitudinal spacing ,vfflax of the screws if the shear force ^is 12001b.
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Complete answer
Fig 1 and 2 pictured with part A
calculate the magnitude of the shear stress at the point due to internal shear on the section.
calculate the combined normal stress at the point due to internal normal force and the internal bending moment of the section.
Problem 1: The steel beam is constructed by welding three rectangular pieces into a complex
cross sectional shape, as shown below. The beam is subjected to an internal vertical shear force
V = 40 N and an internal bending moment M = +80 N-m. Note that the moment M acts about
the horizontal neutral axis of the cross section (labeled NA).
10 mm
10 mm.
10 mm
40 mm
20 mm
20 mm
M
10 mm
10 mm
A
(a) Determine the maximum tensile bending
stress.
(b) Determine the maximum compressive
bending stress.
(c) Determine the maximum transverse shear
stress.
(d) Determine the tra erse shear stress in
the weld, which is located at point C.
Chapter 5 Solutions
Mechanics of Materials (MindTap Course List)
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