Articulo
Physical model for dynamic analysis of structures with fps isolators
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS (PRINT);
Earthq. Eng. Struct. Dyn.
Registro en:
0
D96I1008
D96I1008
WOS:000183741100001
0098-8847
Autor
DE LA LLERA-MARTIN, JUAN
ALMAZAN-CAMPILLAY, JOSE
Institución
Resumen
This article presents a: physical model for frictional pendulum isolators (FPS) that is ready to be implemented in most commercial software. The model is capable of accounting for effects such as large deformations, sticking, and uplift and impact by sensing the normal loads in the isolators through a gap element. Sticking has been incorporated into the model by extending the Park-Wen hysteretic model to the case of large deformations. The proposed model has been tested against a theoretically 'exact' formulation leading to essentially identical results. To facilitate its use, the physical FPS model has been cast into a typical non-linear structural element format, i.e. with deformation as input and restoring force as output. Examples of a building and a bridge have been chosen to show the potential of the element and to provide further insight into the earthquake response of structures with FPS isolators; in particular, in aspects such as the orientation in placement of the isolator, sticking, P - Delta, and other large deformation effects. Copyright (C) 2003 John Wiley Sons, Ltd. 0 14 FONDEF 0 0 8 FONDEF 32