Comparative efficiency analysis of different nonlinear modelling strategies to ...

• Author(s): Hugo Rodrigues ; Humberto Varum ; António Arêde ; Aníbal Costa
• Date: 2012
• Persistent ID: http://hdl.handle.net/10216/69586
• Origin: Repositório Aberto da Universidade do Porto
• Subject(s): Ciências Tecnológicas; Engenharia; Engenharia civil; Engenharia estrutural
• Document Type: Article
• Language: English

Description

The performance of different nonlinear modelling strategies to simulate the response of RC columns subjected to axial load combined with cyclic biaxial horizontal loading is compared. The models studied are classified into two categories according to the nonlinearity distribution assumed in the elements: lumped-plasticity and distributed inelasticity. For this study, results of tests on 24 columns subjected to cyclic uniaxial and biaxial lateral displacements were numerically reproduced. The analyses show that the global envelope response is satisfactorily represented with the three modelling strategies, but signifi cant differences were found in the strength degradation for higher drift demands and energy dissipation.