Warping Bimoment and Its Effect on Analysis of Thin-Walled Sections

The effect of warping bimoment in the analysis of thin-walled sections with restrained torsion is an essential concern and it creates the normal stresses in the cross-section which is related to the amount of resistance to warping. This paper presents the behavior of warping bimoment and its importance in the analysis of thin-walled structures with restrained torsion. The impact of warping bimoment of thin-walled sections is a main issue in the analysis of thin-walled structures as it associated with the external axial loads and torsion on the elastic torsional buckling of open cross section of thin-walled beams. Warping creates the normal stresses in the cross section which are clearly coupled to the amount of resistance to warping. The impact of section properties will change the bimoment effect and warping function so in this paper, the behavior of warping bimoment and its importance in in the analysis of thin-walled structures with restrained torsion is presented. © 2022 American Institute of Physics Inc.. All rights reserved.