Fluidic Self-Centering Devices as Elements of Seismically Resistant Structures: Description, Testing, Modeling, and Model Validation
Publication: Journal of Structural Engineering
Volume 143, Issue 7
Abstract
Fluidic self-centering devices operate on principles similar to those of fluid viscous dampers, but with additional capabilities to provide recentering force (or preload) and stiffness. The functions of preload, stiffness, and damping are entirely controlled by the physical properties, volume, and initial pressure of fluid, and the shaping of the orifices. They are characterized by compactness in comparison to the output force and stroke. They are proposed as self-centering bracing systems for buildings. This paper presents: (1) a description of the behavior of these devices that is on the basis of principles of mechanics, (2) models of behavior of the devices, (3) results of testing of a number of these devices to demonstrate their behavior, and (4) validation of the analytical models. The test results include those of two devices tested over a period of 22 years that demonstrate the stability of the properties of the devices.
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Acknowledgments
The authors acknowledge the financial support by the Japan Student Services Organization (JASSO) Student Exchange Support Program in terms of a scholarship (stipend and tuition) for long-term study abroad to the first author. This support is greatly appreciated. Moreover, the authors acknowledge support in terms of hardware, access to test facilities, and time of the engineering staff at Taylor Devices, Inc. of North Tonawanda, NY. The authors are grateful to Mr. Douglas P. Taylor, President, and Mr. Alan Klembczyk, Vice President, of Taylor Devices for their support and for many inspiring discussions.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 143 • Issue 7 • July 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Sep 15, 2015
Accepted: Dec 21, 2016
Published ahead of print: Mar 9, 2017
Published online: Mar 10, 2017
Published in print: Jul 1, 2017
Discussion open until: Aug 10, 2017
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