Torsional analysis of thin-walled beams of open sections by the direct boundary element method

This article presents a direct boundary element formulation for static torsional analysis of open section thin-walled members. All mathematical representations of the problem such as integral equations, fundamental solutions and algebraic systems are established in terms of typical quantities (twisting moment, bimoment, angle of twist and its rate) of Vlasov’s nonuniform torsion theory. Numerical results are presented for different cases of torque loadings and boundary conditions.