An aircraft cabin window of circular cross section and
simple supports all around as shown in Figure P12–10 is made of polycarbonate
with E = 0:345
106 psi, n = 0:36, radius = 20 in.,
and thickness t = 0:75 in. The safety of the material is tested at a uniform
pressure of 10 psi. Determine the maximum deflection and maximum principal
stress in the material. The yield strength of the material is 9 ksi. Comment on
the potential use of this material in regard to strength and deflection.
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