and E2 - 31500 ksi, r For a bending moment of M, = +13.5 kip-ft, determine: (a) the normal stress in each material at point H, which is located at a distance of a - 1.8 in. above the z centroidal axis. (b) the normal strain in each material at point H. (c) the magnitudes of the maximum bending stress in each material.

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter6: Stresses In Beams (advanced Topics)
Section: Chapter Questions
Problem 6.2.15P: -15 A composite beam is constructed froma wood beam (3 in. x 6 in.) and a steel plate (3 in, wide)....
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A flitch beam can be fabricated by sandwiching two steel plates (2) between three wood boards (1). Dimensions for the cross section
are b= 1.2 in., d = 7.3 in., andt=0.30 in. The elastic moduli of the wood and steel are E - 1700 ksi and E2 -31500 ksi, respectively.
For a bending moment of M, = +13.5 kip-ft, determine:
(a) the normal stress in each material at point H, which is located at a distance of a = 1.8 in. above the z centroidal axis.
(b) the normal strain in each material at point H.
(c) the magnitudes of the maximum bending stress in each material.
(2)
(2)
a
(1)
(1)
(1)
b.
b
Answer:
(a) Owood(H) =
i
psi
Osteel(H) -
psi
(b) Ewood(H) =
Esteel(H) -
με
(c) Owood(max) =
psi
Osteel(max) =
i
psi
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Transcribed Image Text:A flitch beam can be fabricated by sandwiching two steel plates (2) between three wood boards (1). Dimensions for the cross section are b= 1.2 in., d = 7.3 in., andt=0.30 in. The elastic moduli of the wood and steel are E - 1700 ksi and E2 -31500 ksi, respectively. For a bending moment of M, = +13.5 kip-ft, determine: (a) the normal stress in each material at point H, which is located at a distance of a = 1.8 in. above the z centroidal axis. (b) the normal strain in each material at point H. (c) the magnitudes of the maximum bending stress in each material. (2) (2) a (1) (1) (1) b. b Answer: (a) Owood(H) = i psi Osteel(H) - psi (b) Ewood(H) = Esteel(H) - με (c) Owood(max) = psi Osteel(max) = i psi Attempts: 0 of 1 used Submit Answer Save for Later
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