Mechanics of Materials, SI Edition
9th Edition
ISBN: 9781337093354
Author: Barry J. Goodno, James M. Gere
Publisher: Cengage Learning
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Chapter 7, Problem 7.5.1P
1 A rectangular steel plate with thickness
t = 5/8 in. is subjected to uniform normal stresses a and ., as shown in the figure. Strain gages A and B. oriented in the x and v directions. respectively, arc attached to the plate. The gage readings give normal strains = 0.00065 (elongation) and £. = 0.00040 (elongation).
Knowing that E = 30 X 106 psi and v = 0.3, determine the stresses c7 and a, and the change .11 in the thickness of the plate.
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Parvinbhai
uniform diameter d= 1.75 in.
Segment (1) is an aluminum
Ę₁ = 10000 ksi
L₁ = 90 in.
Segment (2) is a copper
Ę₂ = 17000 ksi L₂ = 126 in.
When Pis applied, a strain gage attached to copper segment (2) measures a normal
strain of &2 = 1700 uin./in. in the longitudinal direction.
What is the elongation of segment (1)? Answer in inch rounded-off to 3 decimal places
L₁
A
(1)
Aluminum
B
L2
(2)
Copper
Q1: The stresses measured at a point on bone are oy =5 MPa ,o, = -7 MPa and 1,,=2.4 MPa find: 1. The principal strains and maximum shear strain. 2. The strain energy . Knowing that the poisonratio v=0.3 and the unit volume change =5.6x10
Chapter 7 Solutions
Mechanics of Materials, SI Edition
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