the modulus of elasticity.
Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter9: Time, Temperature, And Mechanical Properties
Section: Chapter Questions
Problem 9.3P
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Question
The polymer bar shown in the figure below has a width of b=55b=55 mmmm, a depth of d=104d=104 mmmm, and a height of h=274h=274 mmmm. At a compressive load of P=120P=120 kNkN, the bar height contracts by Δh=−2.60Δh=-2.60 mmmm, and the bar depth elongates by Δd=0.36Δd=0.36 mmmm. At this load, the stress in the polymer bar is less than its proportional limit. Determine:
(a) the modulus of elasticity.
(b) Poisson’s ratio.
(c) the change in the bar width bb.

Transcribed Image Text:The polymer bar shown in the figure below has a width of b = 55 mm, a depth of d = 104 mm, and a height of h = 274 mm. At a
compressive load of P = 120 kN, the bar height contracts by Ah = -2.60 mm, and the bar depth elongates by Ad = 0.36 mm. At
this load, the stress in the polymer bar is less than its proportional limit. Determine:
(a) the modulus of elasticity.
(b) Poisson's ratio.
(c) the change in the bar width b.
P
Rigid
plate
(a) E =
i
(b) v =
i
(c) Ab =
i
GPa
mm
b
h
Rigid base
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