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• W632046421 abstract "Accurate diagnosis of structural health is a vital step in protecting structures. An autonomous monitoring system that has the capability of predicting the location of damage would have a positive economic impact, not to mention the potential for saving lives, by giving quick assessments of structural health and whether immediate evacuation of, or rerouting, around a structure is necessary. The process of monitoring structural health and identifying damage severity and location is generally termed structural health monitoring. The core of this project is to investigate how variable stiffness and damping devices (VSDD) can be most effectively used to identify local damage in bridges and building structures. Using one or more VSDDs to modify the response, simulated damage is detected, localized and quantified. One fundamental goal is to determine the best VSDD actions, whether adding damping or stiffness, to precisely and robustly locate and identify bridge damage. This study is based on simulation of bridge motion and other structures due to ambient excitation sources. Several VSDD behaviors, such as variable stiffness mode and variable damping mode, are studied in the context of a frequency domain analysis. These analyses are performed on simple models of bridge and building dynamics (e.g., 2 degree-of-freedom shear model systems and a 6 degree-of-freedom model). Structural behavior is assumed locally linear before damage and after damage. Generally, VSDDs were successful in improving the damage identification in structures using the variable stiffness mode but rather unsuccessful in the variable damping only mode. In addition to demonstrating the potential of using variable stiffness and damping devices to improve structural health monitoring, this study also provides some insights into future research directions." @default.
• W632046421 created "2016-06-24" @default.
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• W632046421 date "2004-08-01" @default.
• W632046421 modified "2023-10-12" @default.
• W632046421 title "PARAMETRIC FREQUENCY DOMAIN IDENTIFICATION USING VARIABLE STIFFNESS AND DAMPING DEVICES" @default.
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• W632046421 hasPublicationYear "2004" @default.
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