A simulation method based on explicit time-domain iteration scheme for nonlinear random vibration analysis of isolated bridges under multi-support excitation

Jia, SM; Wang, ZQ; Zhao, L; Ma, HT

A simulation method based on explicit time-domain iteration scheme for nonlinear random vibration analysis of isolated bridges under multi-support excitation

Jia, SM Wang, ZQ Zhao, L Ma, HT

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Publication Type:: Journal Article
Citation:: Gongcheng Lixue/Engineering Mechanics, 2018, 35 (12), pp. 116 - 123
Issue Date:: 2018-12-01

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Field	Value	Language
dc.contributor.author	Jia, SM	en_US
dc.contributor.author	Wang, ZQ	en_US
dc.contributor.author	Zhao, L	en_US
dc.contributor.author	Ma, HT https://orcid.org/0000-0002-0165-8969	en_US
dc.date.issued	2018-12-01	en_US
dc.identifier.citation	Gongcheng Lixue/Engineering Mechanics, 2018, 35 (12), pp. 116 - 123	en_US
dc.identifier.issn	1000-4750	en_US
dc.identifier.uri	http://hdl.handle.net/10453/133871
dc.description.abstract	© 2018, Engineering Mechanics Press. All right reserved. Due to the randomness and the spatial variability of ground motion, the nonlinear behavior of isolation bearings and the limited number of isolation bearings installed in each bridge, the seismic response analysis of an isolated bridges is a typical multi-input locally nonlinear random vibration problem. The Bouc-Wen model is used to describe the nonlinear restoring force of isolation bearings, and then the nonlinear equation of motion of isolated bridges under multi-support seismic excitation is established. The nonlinear equation of motion is rewritten as a quasi-linear equation expressed in terms of state variables. Based on the precise time-integration method and the Range-Kutta method, an explicit time-domain dimension-reduced iteration scheme is established. Using this efficient scheme, the statistical characteristics of the random seismic responses of isolated bridges under multi-support seismic excitation are calculated by stochastic simulation. Numerical examples show the efficiency of the proposed approach and its application in the nonlinear random vibration analysis of isolated bridges under multi-support seismic excitation.	en_US
dc.relation.ispartof	Gongcheng Lixue/Engineering Mechanics	en_US
dc.relation.isbasedon	10.6052/j.issn.1000-4750.2017.09.0707	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Mechanical Engineering & Transports	en_US
dc.title	A simulation method based on explicit time-domain iteration scheme for nonlinear random vibration analysis of isolated bridges under multi-support excitation	en_US
dc.type	Journal Article
utslib.citation.volume	12	en_US
utslib.citation.volume	35	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access	*
pubs.issue	12	en_US
pubs.publication-status	Published	en_US
pubs.volume	35	en_US

Abstract:

© 2018, Engineering Mechanics Press. All right reserved. Due to the randomness and the spatial variability of ground motion, the nonlinear behavior of isolation bearings and the limited number of isolation bearings installed in each bridge, the seismic response analysis of an isolated bridges is a typical multi-input locally nonlinear random vibration problem. The Bouc-Wen model is used to describe the nonlinear restoring force of isolation bearings, and then the nonlinear equation of motion of isolated bridges under multi-support seismic excitation is established. The nonlinear equation of motion is rewritten as a quasi-linear equation expressed in terms of state variables. Based on the precise time-integration method and the Range-Kutta method, an explicit time-domain dimension-reduced iteration scheme is established. Using this efficient scheme, the statistical characteristics of the random seismic responses of isolated bridges under multi-support seismic excitation are calculated by stochastic simulation. Numerical examples show the efficiency of the proposed approach and its application in the nonlinear random vibration analysis of isolated bridges under multi-support seismic excitation.

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http://hdl.handle.net/10453/133871