A pressurized steel tank is constructed with a helical weld that makes an angle

Question

A pressurized steel tank is constructed with a helical weld that makes an angle alpha = 55 degree with the longitudinal axis (see figure). The tank has radius r = 0.6 m, wall thickness t = 18 mm, and internal pressure p = 2.8 MPa. Also, the steel has modulus of elasticity E = 200 GPa and Poisson's ration v = 0.30. Determine the following quantities for the cylindrical part of the tank. The circumferential (hoop) and longitudinal stresses. [Ans. to Check sigma hoop = 93.3 MPa] The maximum in-plane and out-of-plane shear stresses. The circumferential (hoop) and longitudinal strains. The normal and shear stresses acting on planes parallel and perpendicular to the weld (show these stresses on a properly oriented stress element). [Ans. to Check Tx/yI = 21.9 MPa]

Explanation / Answer

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A pressurized steel tank is constructed with a helical weld that makes an angle ? = 60

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