20.500.12556/RUL-168173 Static and dynamic analysis of material and geometrically nonlinear frame-like structures with softening In the present work, a framework is proposed for the static and dynamic analysis of spatial frame-like structures with geometric and material nonlinearities. The formulation is based on a velocity-based finite-element approach that takes into account nonlinear material properties with the localization of deformations. The distinguishing characteristic of our approach is the interpolation of velocities and angular velocities, which are taken as primary unknowns for the quasi-static and dynamic formulations. Special attention is dedicated to the evaluation of strains using the kinematic compatibility equation. The nonlinear fiber-based stress-strain constitutive law is considered at the level of cross-sections taking into account also plasticity and softening. The proposed methodology is consistent, computationally efficient and robust, and shows excellent performance even in the neighborhood of critical points and in the presence of strong nonlinearities. The performance of the proposed methodology is demonstrated using several numerical examples. material softening three-dimensional rotations postcritical analysis strain localization material nonlinearity mehčanje materiala prostorski zasuki postkritična analiza lokalizacija deformacij materialna nelinearnost true false true Angleški jezik Slovenski jezik Članek v reviji 2025-04-01 11:37:34 2025-04-01 11:37:36 2025-04-02 03:54:40 0000-00-00 00:00:00 2025 0 0 13 str. no. 6, art. 04025058 Vol. 151 Mar. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 531:620.1 0733-9445 10.1061/JSENDH.STENG-13711 230990083 https://ascelibrary.org/doi/10.1061/JSENDH.STENG-13711 1 e8498663-0edb-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=201256 Kusuma_Chandrashekhara,_Zupan-Static_and_Dynamic_Analysis_of_Material_and_Geometrically_Nonlinear_Frame-Like_Structures_with_Softening.pdf Kusuma_Chandrashekhara,_Zupan-Static_and_Dynamic_Analysis_of_Material_and_Geometrically_Nonlinear_Frame-Like_Structures_with_Softening.pdf 1 6E5BB27E5ADD5E6F866E0E278C95E134 ff552fd4350e984b33051308ed147998a9502d32809638c1b860ba3cebfef532 26d87c0c-0edc-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=201257 Fakulteta za gradbeništvo in geodezijo 0 0 0