Combined MVP failure criterion for steel cross-sections |
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Authors: | Yuxin Liu Lei Xu |
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Affiliation: | a ACR Civil & Layout, Atomic Energy of Canada Limited, Ontario, Canada, L5K 1B2 b Civil and Environmental Engineering, University of Waterloo, Ontario, Canada, N2L 3G1 |
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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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Keywords: | Steel cross-section Post-elastic stresses MVP failure surface |
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