Other affiliations: University of Nottingham, University of California, University of California, Davis
Bio: Yung-Tsang Chen is an academic researcher from The University of Nottingham Ningbo China. The author has contributed to research in topics: Materials science & Damper. The author has an hindex of 7, co-authored 24 publications receiving 328 citations. Previous affiliations of Yung-Tsang Chen include University of Nottingham & University of California.
TL;DR: In this paper, an optimal design theory for structures implemented with tuned mass dampers (TMDs) is proposed, and the optimal design parameters of TMDs in terms of damping coefficients and spring constants corresponding to each TMD are determined through minimizing a performance index of structural responses defined in the frequency domain.
TL;DR: In this paper, a single-story building with a viscous damper installed on top of a Chevron-brace is investigated and closed-form solutions are derived for the simple structure, relating the brace stiffness and damper coefficient to the targeted reduction in response displacement or acceleration.
Abstract: Shear-type buildings with Maxwell model-based brace–damper systems are studied in this paper with a primary emphasis on the effects of brace stiffness. A single-story building with a viscous damper installed on top of a Chevron-brace is first investigated. Closed-form solutions are derived for the simple structure, relating the brace stiffness and damper coefficient to the targeted reduction in response displacement or acceleration. For a given brace stiffness, the solution is minimized to give a set of formulae that will allow the optimal damper coefficient to be determined, assuring the desired performance. The model is subsequently extended to multistory buildings with viscous dampers installed on top of Chevron-braces. For a targeted reduction in the mean square of the interstory drift, floor acceleration or base shear force, the minimum brace stiffness and optimal damper coefficients are obtained through an iterative procedure. The response reduction, which signifies the improved performance, is achieved by a combination of brace stiffness and viscous damper coefficients, unlike conventional approaches where damper coefficients are typically optimized independent of brace stiffnesses. Characteristics of multi-degree-of-freedom systems are studied using a 2-story and a 10-story buildings where the effects of brace stiffness on the overall performance of the building can be quantified. Copyright © 2010 John Wiley & Sons, Ltd.
TL;DR: A damage detection method which uses the simple regression analysis, which has the advantages that the environmental and operational conditions are not needed and the multivariate statistical tools are not required for data processing is developed.
TL;DR: It is demonstrated that damage can be detected at an earlier stage using the approach proposed in this paper, which makes use of Principal Component Analysis and Median Absolute Deviation to identify outlier measurements.
TL;DR: In this paper, changes in vibration properties (e.g., natural frequencies) of structures as a result of damage have been analyzed for damage detection of civil structures, and these changes have been heavily used by researchers.
Abstract: Analyzing changes in vibration properties (e.g. natural frequencies) of structures as a result of damage has been heavily used by researchers for damage detection of civil structures. These changes...
15 Dec 2004
TL;DR: In this article, a tuned mass-damper-inerter (TMDI) was proposed to suppress the oscillatory motion of stochastically support excited mechanical cascaded (chain-like) systems.
TL;DR: The review clearly demonstrates that the TMDs have a potential for improving the wind and seismic behaviors of prototype civil structures and shows that the MTMDs and d-MTMDs are relatively more effective and robust, as reported.
TL;DR: In this article, the optimum parameters of tuned mass dampers (TMD) are proposed under seismic excitations, and a Matlab program is developed for numerical optimization and time domain simulation.
TL;DR: A novel evolutionary algorithm of particle swarm optimization (PSO) is used for optimization of the required parameters of a TMD system attached to a viscously damped single degree-of-freedom main system.