The Structural Engineer > Archive > Volume 39 (1961) > Issues > Issue 5 > On the Torsional Stiffness of Box Section Girders
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On the Torsional Stiffness of Box Section Girders

The behaviour of a structural member subjected to a torsional load may be defined by its torsional rigidity and the stress distribution over its cross section. As distinct from the solid or hollow cross section which is homogeneous in the axial direction, the semi-closed box section represents a three-dimensioned problem of a complex nature. This Paper attempts a solution by the Strain Energy method leading to expressions of torsional rigidity of a particular type of design and also analyses the stress distribution, the results being expressed in terms of the applied torque. F. Laszlo, Dr. Ing and and H. Nolle