Author(s)

M. Puglisi & J. Florez-Lopez

Abstract

Lumped damage models for oligocyclic fatigue in RC frames M. Puglisi, J. Florez-Lopez Facultad de Ingenieria, Universidad de Los Andes, Merida, Venezuela ABSTRACT This paper presents a simplified damage theory for the nonlinear analysis of frames based on the lumped plasticity models and continuum damage mechanics. Based on this formulation, a particular model for RC frames under oligocyclic fatigue is proposed. INTRODUCTION Classic damage mechanics has been developed within the framework of continuum mechanics, but this is not the most suitable framework for the analysis of many civil engineering structures. These are often modeled as trusses or frames because continuum models can be used only for relatively simple structures. Plasticity theories have been successfully adapted to frame analysis through the notion of "lumped plasticity models" which consists in assuming that plastic effects are concentrated in some special locations called "plastic hinges". In thi

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