Abstract
This study determines failure criterion for steel member cross-sections, subjected to combined bending moment M , shear force V , and axial force P (MVP). The principle of maximum plastic strain energy is employed to develop the strain–stress relationship for plastic flow, and the expression for the MVP yield surface of the cross-section. A linear distribution of shear strain over the cross-section is assumed. The influence of plastic deformation on bending moment, shear force and axial force, at full yield of the cross-section, is investigated. Results predicted by the derived MVP failure surface, are compared with those obtained by other studies in the literature. The derived MVP yield surface can serve as a basis to identify the failure of steel members, such as during seismic or progressive-failure analysis of building frameworks.
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