Two Methods to Compute the Plastic Bimoment of thin Walled Sections
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The present paper deals with plastic warping torsion, presenting two methods to obtain the plastic bimoment of thin walled sections. In the first method plastic shear center needs to be obtained, while in the second method linear programming is used to maximize the plastic bimoment using the elastic shear center as pole to obtain the unit warping. Numerical examples for monosymmetric I shaped section, channel section and non symmetric section show perfect agreement.