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Unformatted text preview: 2b. The stiffeners are mounted at 10 degree angles around the circumference of the skin and stiffeners lie on the vertical and horizontal diameters. Idealise the crosssection by assuming that only the crosssectional area of the stiffener, and not its detailed Zshape, need be used. Find the second moment of areas xy yy xx I I I . If the fuselage section is subjected to a bending moment x M then show how the stress at the point labelled A in figure 2b is determined for the stiffener at the top of the vertical diameter. (a) a 2a a (b) t t R a=0.1R A Figure 2...
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 Winter '09
 S.PinhoandM.Aliabadi

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