Response control of seismically excited buildings: Application of viscous damping and negative stiffness control algorithm
Abstract
This thesis focuses on the application of the viscous damping and negative stiffness (VDNS) algorithm to the seismic response control of buildings. It provides an effective option for the semi-active control of the earthquake excited buildings. The proposed VDNS control algorithm is a simple strategy, as compared to those control strategies requiring the designers to have deep understanding in modern control theory. It reduces the vibrations of the building by increasing the damping of the structure. The algorithm produces a control force that only requires measurements at the location of the control device. Therefore, the VDNS controller can be designed decentralized. The VDNS algorithm is evaluated on the numerical models of two buildings: a six-story building and a 20-story benchmark building. Active and semi-active control systems are designed based on the VDNS algorithm, to demonstrate its applications in both active and semi-active control. It is observed to be effective in reducing the responses of both buildings under earthquakes significantly.
Degree
M.S.M.E.
Advisors
Dyke, Purdue University.
Subject Area
Mechanical engineering
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