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 5.11.4P
A wood box beam is constructed of two 260 mm × 50 mm boards and two 260 mm × 25 mm boards (sec figure). The boards are nailed at a longitudinal spacing. b = 100 mm.
If each nail has an allowable shear force F = 1200 N. what is the maximum allowable shear force Vmax?
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سنب
3. A beam of T cross-section is formed by joining together two
boards having dimensions shown in the figure. The total shear
force acting on the cross-section is V = 1500 N.
a. Determine the maximum shear stress on the neutral axis of the
cross-sections.
b. If the two boards are to be glued, what is the required shear
strength of the glue.
c. If nails are to be used instead of glue, determine the required
spacing, s. Let allowable load in shear for each nail be Fs.
240 mm
60 mm
200 mm
60 mm
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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