Direct analysis for high-strength steel frames with explicit-model of residual stresses

Refined spatial beam-column element for second-order analysis of lattice shell structure

“…The mechanical equilibrium equation of the beam-column element at the given moment t + Δt in the virtual work form is shown in Eq. (25):…”

“…Liu et al [23,24] proposed a new and curved beam-column element with arbitrarily-located plastic hinge for second-order inelastic or direct analysis of steel frames. Li et al [25] proposed a direct analysis method (DAM) for design of high-strength steel members and frames allowing explicit modeling of residual stresses. All the members of lattice shell structure bear the spatial external forces among which the axial force is markedly bigger in amount than the bending moment and shear force.…”

A Complete Assessment of the Moment‐Curvature Relationship of Compressed Steel‐concrete Composite Cross‐sections

“…For example, Liu et al [6] made variations in the position of the neutral axis, simultaneously considering the limiting strain of some of the crosssection component materials to analyse specific interaction curves. These studies focused in generically sections shapes or determined types, as made by Li et al [7], that analysed rectangular tubular and welded-I cross-sections using a quasi-Newton method [8].…”

Inteligência Artificial Para Identificar O Uso De Máscara Na Prevenção Da Covid-19

“…The Refined Plastic Hinge Method (LEMES et al, 2018) is one of the methods available to have an efficient analysis, it consists in dealing with the plasticity in a concentrated form, several papers evaluate the inelastic effect through this method (LI et al, 2015;LEMES et al, 2016;LEMES et al, 2017). RPHM consist in the insertion of a fictional spring in the nodal point of study, which will simulate the nonlinear effects of the material degradation.…”