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Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis

This paper presents a new bracing system with variable stiffness springs; this adaptive structural control system is designed to protect buildings against severe vibration and ground movement. The developed variable stiffness bracing (VSB) system comprises four nonlinear steel leaf springs that prov...

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Main Authors: Fateh, Amir, Hejazi, Farzad, Jaafar, Mohd. Saleh, Abd. Karim, Izian, Adnan, Azlan
Format: Article
Published: Elsevier Ltd 2016
Subjects:
QA Mathematics
Online Access:http://eprints.utm.my/id/eprint/69154/
http://dx.doi.org/ 10.1016/j.soildyn.2015.10.009
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spelling my.utm.691542017-11-20T08:52:12Z http://eprints.utm.my/id/eprint/69154/ Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis Fateh, Amir Hejazi, Farzad Jaafar, Mohd. Saleh Abd. Karim, Izian Adnan, Azlan QA Mathematics This paper presents a new bracing system with variable stiffness springs; this adaptive structural control system is designed to protect buildings against severe vibration and ground movement. The developed variable stiffness bracing (VSB) system comprises four nonlinear steel leaf springs that provide nonlinear and variable stiffness capacity at different frame displacements. The inelastic actions of the VSB system's nonlinear leaf springs keep the energy dissipation characteristics and ductility of moment-resisting frames. At large vibration amplitudes, the VSB device restrains unallowably story drift. Therefore, frames display ductile performance. We developed a mathematical model to simulate the mechanical behavior of the system, including the stiffness nonlinearity of the springs. Moreover, we evaluated the efficiency of the VSB implementation in a single-degree-of-freedom system by dynamically analyzing different models: a moment-resisting frame, a conventional braced frame, and a frame using the VSB system. This article discusses and proves the effectiveness of the proposed system through numerical analysis. Elsevier Ltd 2016 Article PeerReviewed Fateh, Amir and Hejazi, Farzad and Jaafar, Mohd. Saleh and Abd. Karim, Izian and Adnan, Azlan (2016) Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis. Soil Dynamics and Earthquake Engineering, 80 . pp. 87-101. ISSN 0267-7261 http://dx.doi.org/ 10.1016/j.soildyn.2015.10.009 DOI:10.1016/j.soildyn.2015.10.009
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QA Mathematics
spellingShingle QA Mathematics
Fateh, Amir
Hejazi, Farzad
Jaafar, Mohd. Saleh
Abd. Karim, Izian
Adnan, Azlan
Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis
description This paper presents a new bracing system with variable stiffness springs; this adaptive structural control system is designed to protect buildings against severe vibration and ground movement. The developed variable stiffness bracing (VSB) system comprises four nonlinear steel leaf springs that provide nonlinear and variable stiffness capacity at different frame displacements. The inelastic actions of the VSB system's nonlinear leaf springs keep the energy dissipation characteristics and ductility of moment-resisting frames. At large vibration amplitudes, the VSB device restrains unallowably story drift. Therefore, frames display ductile performance. We developed a mathematical model to simulate the mechanical behavior of the system, including the stiffness nonlinearity of the springs. Moreover, we evaluated the efficiency of the VSB implementation in a single-degree-of-freedom system by dynamically analyzing different models: a moment-resisting frame, a conventional braced frame, and a frame using the VSB system. This article discusses and proves the effectiveness of the proposed system through numerical analysis.
format Article
author Fateh, Amir
Hejazi, Farzad
Jaafar, Mohd. Saleh
Abd. Karim, Izian
Adnan, Azlan
author_facet Fateh, Amir
Hejazi, Farzad
Jaafar, Mohd. Saleh
Abd. Karim, Izian
Adnan, Azlan
author_sort Fateh, Amir
title Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis
title_short Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis
title_full Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis
title_fullStr Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis
title_full_unstemmed Design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis
title_sort design of a variable stiffness bracing system: mathematical modeling, fabrication, and dynamic analysis
publisher Elsevier Ltd
publishDate 2016
url http://eprints.utm.my/id/eprint/69154/
http://dx.doi.org/ 10.1016/j.soildyn.2015.10.009
_version_ 1643656016853729280
score 13.211869

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