RT info:eu-repo/semantics/article
T1 Sequential Plastic Method for 2D frames limit analysis
A1 Cacho Pérez, Mariano
K1 Estructuras, Cálculo Plástico, flexión barras esbeltas
K1 Collapse; Plastic hinges; Sequential method; 2D frames; Uniform distributed load
K1 3305.21 Construcciones Metálicas
K1 2205.02 Mecánica de Medios Continuos
K1 3312.09 Resistencia de Materiales
AB This work focuses on the limit analysis or plastic calculation of slender beam planar frames using a new method. Sufficient static equilibrium equations are proposed by the Principle of Virtual Displacements (PVD) and kinematic compatibility equations are proposed by the Principle of Virtual Forces (PVF). The load level is increased and the structure is solved step by step until the plastic collapse. Equilibrium equations are posed by virtual problems in displacements and compatibility equations are posed by simple virtual problems in equilibrium. The method provides the following results: the collapse load factor, the final collapse mechanism, the bending moments and the accumulated rotations in the plastic hinges in each load step of the structure. This method has advantages over the classical methods; first, with respect to the step-by-step method based on matrix formulation, especially in the case of beams and/or columns with uniform distributed load, and secondly, with respect to the kinematic direct method, since the sequential method provides more information on the quantities involved in the plasticization process of the structure and also goes directly to the calculation of the collapse mechanism without the need to test or combine possible mechanisms.
PB Elsevier
SN 2352-0124
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/64887
UL https://uvadoc.uva.es/handle/10324/64887
LA eng
NO M. Cacho-Pérez, Sequential Plastic Method for 2D frames limit analysis, Structures, Volume 47, 2023, Pages 1680-1690, ISSN 2352-0124, https://doi.org/10.1016/j.istruc.2022.12.005.
NO Producción Científica
DS UVaDOC
RD 24-dic-2024