Deus, Lidiane Rodrigues Reis Maia deSilveira, Ricardo Azoubel da MotaLemes, Igor José MendesSilva, Jéssica Lorrany e2021-11-192021-11-192020DEUS, L. R. R. M. de. et al. Second-order inelastic analysis of shallow and non-shallow steel arches. Latin American Journal of Solids and Structures, v. 17, n. 3, p. 1-28, mar. 2020. Disponível em: <https://www.scielo.br/j/lajss/a/9XDnjq5CczYDgktDTg7GJFf/?lang=en>. Acesso em: 12 set. 2021.1679-7825http://www.repositorio.ufop.br/jspui/handle/123456789/13976This work presents a second-order inelastic analysis of steel arches. The analysis of shallow and non-shallow arches with several cross sections and boundary and loads conditions are discussed. The computational platform used is the homemade CS-ASA, which performs advanced nonlinear static and dynamic analysis of structures. The nonlinear geometric effects are considered using a co-rotational finite element formulation; the material inelasticity is simulated by coupling the Refined Plastic Hinge Method (RPHM) with the Strain Compatibility Method (SCM), and the static nonlinear solution is based on an incremental-iterative strategy including continuation techniques. In the simulated nonlinear steel arch models, special attention is given to the equilibrium paths, the influence of rise-to-span ratio, support and loading conditions and full yield curves among other factors. The numerical results obtained show good agreement with those from literature and highlight that the arch rise-to-span ratio has great influence on the structure resistance and that the shallow arches can lose stability through the snap-through phenomenon.en-USabertoSteel archesNonlinear analysisLarge displacementsCo-rotational formulationInelasticityArtigo publicado em periodicoThis is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Source: The article PDF.https://doi.org/10.1590/1679-78255941