(a) Determine:
(i) The principle stresses and the maximum-in-plane shear stress which acting on
a stress element at point A on the wall of vessel as shown in Figure 1b.
[12 marks]
(ii) By construct Mohr’s circle, determine the normal stress perpendicular to the
weld seam and the shear stress parallel to the weld seam (refer to point B).
[18 marks]
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