Author/Authors :
chenia, mahmoud badji mokhtar-annaba university - department of civil engineering, laboratory of civil engineering (lgc), 2laboratory of materials, géo-materials, and environment (lmge), Annaba, Algeria , hammouda, abdelaziz badji mokhtar-annaba university - department of civil engineering, laboratory of materials, géo-materials, and environment (lmge), Annaba, Algeria , chaouch, abdel madjid hacene badji mokhtar-annaba university - department of civil engineering, laboratory of materials, géo-materials, and environment (lmge), Annaba, Algeria , challamel, noël university of south brittany - institute for research design in librarianship (irdl), Lorient, france
Abstract :
This paper deals with the dynamic behaviour of a perfect damped elastoplastic oscillator, subjected to an external seismic load. The rheological model is presented as a single-degree-of-freedom system, for the two cases: a symmetrical excitation (perfect elastoplasticity); and an asymmetry in the compression field. The energizing assessment is essentially established from the dissipated energy map during the oscillations, according to the structural parameters of the model (equivalent angular frequency, damping, parameter of the asymmetric excitation force…). A dissipation of the limit cycle energy observed for the alternating plasticity behavioural area, which is controlled by the bifurcation boundary.
NaturalLanguageKeyword :
Perfect Damped Elastoplastic Oscillator , Rheological model , Dissipated energy , Limit cycle , Alternating plasticity , Bifurcation boundary
