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No need to complete these columns for this example With reference to §9.7, the element stresses are obtained from

With reference to §9.7, the element stresses are obtained from

{a(e)} = [//w]{i(e)} where, for element a, the displacement column matrix is

{s(a)} = (m, V] 9] «2 v2 92) in which u2 = v2 = 92 = 0 in this example.

Substituting for element a and letting superscript i denote extreme inner fibres and superscript o denote extreme outer fibres, gives

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