A Hybrid Approach for the Dynamic Instability Analysis of Single-Layer Latticed Domes with Uncertainties

An, N; Zhang, H; Zhu, X; Xu, F

A Hybrid Approach for the Dynamic Instability Analysis of Single-Layer Latticed Domes with Uncertainties

An, N Zhang, H Zhu, X

Xu, F

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Publisher:: WORLD SCIENTIFIC PUBL CO PTE LTD
Publication Type:: Journal Article
Citation:: International Journal of Structural Stability and Dynamics, 2021, 21, (6)
Issue Date:: 2021-06-01

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Field	Value	Language
dc.contributor.author	An, N
dc.contributor.author	Zhang, H
dc.contributor.author	Zhu, X https://orcid.org/0000-0001-5083-9320
dc.contributor.author	Xu, F
dc.date.accessioned	2022-02-23T20:16:12Z
dc.date.available	2022-02-23T20:16:12Z
dc.date.issued	2021-06-01
dc.identifier.citation	International Journal of Structural Stability and Dynamics, 2021, 21, (6)
dc.identifier.issn	0219-4554
dc.identifier.issn	1793-6764
dc.identifier.uri	http://hdl.handle.net/10453/154810
dc.description.abstract	Currently, there is no unified criterion to evaluate the failure of single-layer latticed domes, and an accurate nonlinear time-history analysis (NTHA) is generally required; however, this does not consider the uncertainties found in practice. The seismic instability of domes subjected to earthquake ground motions has not been thoroughly investigated. In this paper, a new approach is developed to automatically capture the instability points in the incremental dynamic analysis (IDA) of single-layer lattice domes by integrating different efficient and robust methods. First, a seismic fragility analysis with instability parameters is performed using the bootstrap calibration method for the perfect dome. Second, based on the Sobol sequence, the quasi-Monte Carlo (QMC) sampling method is used to efficiently calculate the failure probability of the dome with uncertain parameters, in which the truncated distributions of random parameters are considered. Third, the maximum entropy principle (MEP) method is used to improve the computational efficiency in the analyses of structures with uncertainties. Last, the uncertain interval of the domes is determined based on the IDA method. The proposed method has been used to investigate the instability of single-layer lattice domes with uncertain parameters. The results show that it can determine the probability of structural failure with high efficiency and reliability. Additionally, the limitations of the proposed method for parallel computation are discussed.
dc.language	English
dc.publisher	WORLD SCIENTIFIC PUBL CO PTE LTD
dc.relation.ispartof	International Journal of Structural Stability and Dynamics
dc.relation.isbasedon	10.1142/S0219455421500826
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0913 Mechanical Engineering
dc.title	A Hybrid Approach for the Dynamic Instability Analysis of Single-Layer Latticed Domes with Uncertainties
dc.type	Journal Article
utslib.citation.volume	21
utslib.for	0905 Civil Engineering
utslib.for	0913 Mechanical Engineering
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 Civil and Environmental Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2022-02-23T20:16:10Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	21
utslib.citation.issue	6

Abstract:

Currently, there is no unified criterion to evaluate the failure of single-layer latticed domes, and an accurate nonlinear time-history analysis (NTHA) is generally required; however, this does not consider the uncertainties found in practice. The seismic instability of domes subjected to earthquake ground motions has not been thoroughly investigated. In this paper, a new approach is developed to automatically capture the instability points in the incremental dynamic analysis (IDA) of single-layer lattice domes by integrating different efficient and robust methods. First, a seismic fragility analysis with instability parameters is performed using the bootstrap calibration method for the perfect dome. Second, based on the Sobol sequence, the quasi-Monte Carlo (QMC) sampling method is used to efficiently calculate the failure probability of the dome with uncertain parameters, in which the truncated distributions of random parameters are considered. Third, the maximum entropy principle (MEP) method is used to improve the computational efficiency in the analyses of structures with uncertainties. Last, the uncertain interval of the domes is determined based on the IDA method. The proposed method has been used to investigate the instability of single-layer lattice domes with uncertain parameters. The results show that it can determine the probability of structural failure with high efficiency and reliability. Additionally, the limitations of the proposed method for parallel computation are discussed.

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http://hdl.handle.net/10453/154810