000012740 001__ 12740
000012740 005__ 20160920162643.0
000012740 04107 $$aeng
000012740 046__ $$k2016-09-05
000012740 100__ $$aMarchis, I.V.
000012740 24500 $$aNonlinear inelastic analysis of steel frameworks with non-prismatic members and semi-rigid connections

000012740 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012740 260__ $$bTaylor and Francis Group, London, UK
000012740 506__ $$arestricted
000012740 520__ $$2eng$$aThis paper presents a new computer method for nonlinear inelastic analysis of steel frames with non-prismatic members and semi-rigid connections. The behavior model accounts for material inelasticity (concentrated plasticity) due to combined bending and axial force, geometrical nonlinear effects in conjunction with initial geometric imperfections using only one element per physical member. The method ensures also that the plastic bending moment is nowhere exceeded once a full plastified section develops. The proposed formulation combines the power series approach with the Maxwell-Mohr method to compute the flexibility coefficients of the Euler-Bernoulli beamcolumn element in the presence of initial geometric imperfections, lateral loads acting along the member length and axial load. The second-order elasto-plastic tangent stiffness matrix and equivalent nodal loads vector of non-prismatic 2D beam-column element with semi-rigid connections is developed and the proposed nonlinear analysis formulation has been implemented in a computer program. In order to verify the efficiency and accuracy of the proposed approach, several examples analyzed by other researchers have been carried out and the results prove the performance of the proposed method.

000012740 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012740 653__ $$a

000012740 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012740 720__ $$aMarchis, I.V.$$iChiorean, C.G.
000012740 8560_ $$ffischerc@itam.cas.cz
000012740 8564_ $$s446409$$uhttps://invenio.itam.cas.cz/record/12740/files/188.pdf$$yOriginal version of the author's contribution as presented on CD, 188.pdf.
000012740 962__ $$r12552
000012740 980__ $$aPAPER