The polymer bar shown in the figure below has a width of b=40 mm, a depth of d=104 mm, and a height of h=255 mm. At a compressive load of P=125 kN, the bar height contracts by Δh=-2.40 mm, and the bar depth elongates by Δd=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.
The polymer bar shown in the figure below has a width of b=40 mm, a depth of d=104 mm, and a height of h=255 mm. At a compressive load of P=125 kN, the bar height contracts by Δh=-2.40 mm, and the bar depth elongates by Δd=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.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The polymer bar shown in the figure below has a width of b=40 mm, a depth of d=104 mm, and a height of h=255 mm. At a compressive load of P=125 kN, the bar height contracts by Δh=-2.40 mm, and the bar depth elongates by Δd=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.
Transcribed Image Text:The polymer bar shown in the figure below has a width of b = 40 mm, a depth of d = 104 mm, and a height of h = 255 mm. At a
compressive load of P = 125 kN, the bar height contracts by Ah = -2.40 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.
Rigid
plate
b.
Rigid base
(a) E =
GPa
(b) V =
i
(c) Ab =
i
mm
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