Show simple item record

dc.contributor.advisorSuárez, Luis E.
dc.contributor.authorCundumi-Sánchez, Orlando
dc.description.abstractThis dissertation proposes a new semiactive device, composed of two fixedorifice viscous fluid dampers installed in the form of V whose top ends are attached to the upper floor and their lower ends to a point that can move along a vertical rod. The mechanism is termed the Variable-Damping-Semi-Active (VDSA) device. By varying its position, one can provide optimal instantaneous damping to the structure to minimize its seismic response. To determine the proper position of the moving end of the device, two algorithms based on a variation of the Instantaneous Optimal control theory were developed. The modified algorithms, referred to as Qv, are used to compute the response of structures standing alone and of coupled structures. Single and multi degree of freedom models are considered. The responses of the structural systems with the VDSA device subjected to different earthquakes are numerically studied and compared with those obtained with fixed dampers.en_US
dc.description.abstractEn esta disertación se propone un nuevo equipo de control semiactivo. El equipo consiste de dos amortiguadores viscosos de orificio fijo, instalados en forma de V y cuyos extremos inferiores se pueden mover verticalmente hacia arriba y hacia abajo a lo largo de una barra vertical. El equipo se denomina VDSA (Variable Damping Semi-Active). Debido a la variación de la posición de los amortiguadores se puede suministrar un amortiguamiento óptimo a la estructura minimizando su respuesta. Para determinar la posición en cada instante de tiempo, se desarrollaron dos algoritmos de control basados en la Teoría de Control Óptimo. Los algoritmos, que se denominaron algoritmos Qv modificados, se usan para computar la respuesta sísmica de estructuras solas y acopladas de uno y múltiples grados de libertad. Se estudio en forma numérica la respuesta de los sistemas estructurales con el equipo VDSA sometidos a diferentes terremotos y se comparó con la respuesta con amortiguadores fijos.en_US
dc.subjectSeismic responseen_US
dc.subject.lcshDamping (Mechanics)en_US
dc.subject.lcshBuildings--Earthquake effectsen_US
dc.subject.lcshEarthquake hazard analysisen_US
dc.titleA variable damping semiactive device for control of the seismic response of buildingsen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2005 Orlando Cundumi Sánchezen_US
dc.contributor.committeeMartínez, José A.
dc.contributor.committeeSaffar, Alí
dc.contributor.committeeGodoy, Luis A.
dc.contributor.committeeLópez, Ricardo
dc.contributor.representativeAsencio, Eugenio Engineeringen_US
dc.contributor.collegeCollege of Engineeringen_US
dc.contributor.departmentDepartment of Civil Engineeringen_US

Files in this item


This item appears in the following Collection(s)

  • Theses & Dissertations
    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a graduate degree at UPR-Mayagüez.

Show simple item record

All rights reserved
Except where otherwise noted, this item's license is described as All Rights Reserved