The Structural Engineer > Archive > Volume 69 (1991) > Issues > Issue 24 > The Derivation of Torsional Stiffness Using a Modern Spreadsheet and an Improved Finite Difference S
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The Derivation of Torsional Stiffness Using a Modern Spreadsheet and an Improved Finite Difference Scheme

A number of authors describe one or both of the two possible approaches which may be used to derive the Saint-Venant torsional stiffness of a general structural section. For the purposes of this discussion, the stress function approach is used, but the principles may be applied just as easily to the alternative displacement formulation. A.G. Smyrell