# a steel pipe of 400 mm outer diameter is fabricated

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A steel pipe of 400-mm outer diameter is fabricated from 10-mm-thick plate by welding along a helix that forms an angle of 20° with a plane perpendicular to the axis of the pipe. Knowing that a 300-kN axial force P is applied to the pipe. Determine the normal and shearing stresses in directions respectively normal and tangential to the weld.

Explanation:

Outer di ameter

Given loading on the cylinder Helix an gle of the weld form

(i) Normal stress on the plane at angle is

(ii) Shear stress along an angle of is

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