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Vibration control of civil engineering structures using magneto-rheological dampers
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Autores
Braz-César, Manuel
Orientador(es)
Resumo(s)
This paper addresses the semi-active contro
l of a scaled model frame equipped with
a magneto-rheological (MR) damper, deve
loped within the COVICOCEPAD project
(Eurocores program S3T) reporting related
research and development related with
structural control of civil
engineering structures. The scaled frame is a model of a
three-storey building with a single MR
damper rigidly connected between the
ground and the first floor. Among the vari
ety of semi-active control algorithms
available for MR damper control, a cli
pped-optimal control
algorithm model-based
on the linear quadratic regul
ator (LQR) and a fuzzy control non-model-based
algorithm were selected as the semi-activ
e controllers. A small sponge type MR
damper was experimentally tested under seve
ral input excitations to characterize the
damper performance. The simple Bouc-Wen phenomenological model was chosen
to simulate the nonlinear behavior of
the MR damper and the related model
parameters were obtained based on the ex
perimentally measured responses. Some
numerical results of the uncontrolled
and controlled frame under El Centro
earthquake are given to evaluate the perfor
mance of the selected control strategies.
Descrição
Palavras-chave
Semiactive MR damper
Contexto Educativo
Citação
Braz-César, M.T.; Barros, Rui (2012). Vibration control of civil engineering structures using magneto-rheological dampers. In The Eleventh International Conference on Computational Structures Technology. Croatia