Timothy A. Philpot - Mechanics of materials _ an integrated learning system-John Wiley (2017)

p13.65 A solid plastic [E = 45 MPa; ν = 0.33] rod with a diameter
d = 100 mm is placed in a D = 101 mm diameter hole with rigid
walls as shown in Figure P13.65. The rod has a length L = 400 mm.
Determine the change in length of the rod after a load P = 32 kN
is applied.
Figure P13.66/67/68. Determine the in-plane normal and shear
strains for this loading.
z
P
Rigid
walls
L
x
FIGURE p13.66/67/68
y
d
FIGURE p13.65
p13.66 A plate of epoxy reinforced with unidirectional Kevlar
49 fibers is loaded with stresses σ x = 350 MPa, σ y = 17 MPa, and
τ xy = 12 MPa. The fibers are aligned in the x direction as shown in
D
p13.67 A plate of epoxy reinforced with unidirectional T-300
fibers is loaded with stresses σ x = 40 ksi, σ y = −10 ksi, and τ xy =
3 ksi. The fibers are aligned in the x direction as shown in Figure
P13.66/67/68. Determine the in-plane normal and shear strains for
this loading.
p13.68 A plate of epoxy reinforced with unidirectional T-300
fibers is subjected to strains e x = 1,380 me, σ y = 5,250 me, and τ xy =
1,750 mrad. The fibers are aligned in the x direction as shown in
Figure P13.66/67/68. Determine the in-plane normal and shear
stresses (in ksi) in the composite plate.
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