Consider a Boeing 787 and assume the fuselage cross-section to be circular with a diameter d=5.9m, a skin thickness t=2mm, and isotropic material properties of E=60GPa and ν=0.28. The vertical tail plane applies a torsional moment of the rear fuselage, inducing a shear flow in the rear fuselage skin. Calculate the shear stress τ in the rear fuselage skin for the assumed fuselage diameter and thickness if a torsional moment of MT=1.8⋅106N⋅m is applied.

Q: 2. Determine the shearing stress in each of the four walls of a portion of a structural aluminum…

A: Given, Torque =3 kN-m=26.55 kip-in Dimension=100×51 mm=3.93×2 in Wall thickness=4 mm=0.15 in.

Q: A uniform structural tubing column AB with a height of 4 m has a cross section as shown in Figure…

A: The given data is shown below: Height=4mE=200 GPaA=2285 mm2r=37.5 mmI=3.33×106 mm4F=2e=18.75 mm

Q: 3. (c) A square steel bar of dimension 50 mm × 50 mm × 150 mm is subjected to an axial load of 250…

A: Size of bar 50mm x 50mm x 150mm P = 250 kN or 250,000 N

Q: A solid circular steel shaft of 50 mm diameter, fixed at one end, is subjected to torques as shown…

A: Given data, For solid circular shaft Diameter=50 mm The shearing modulus of material = 80 GPa

Q: Theory of Failure Question 1: The uniaxial yield stress of a material is 866 MPa. According to von…

A: Yield stress- σy=866  MPa, It is needed to find the shear yield stress as per the Von-mises…

Q: For a beam with the cross-section shown and loaded as shown, find the magnitude of the maximum…

A:

Q: Derive a formula for the strain energy U of the cantilever bar shown in the figure. The bar has…

A: Derive a formula for the strain energy U of the cantilever bar shown in the figure.

Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.