Test of an Idea for Improving the Efficiency of Nonlinear Time History Analyses When Implemented in Seismic Analysis According to NZS 1170.5:2004

authored by: Aram Soroushian, Peter Wriggers
Abstract: For nonlinear time history analysis, employing a time integration method and some nonlinearity iterative method (for implicit analyses) is a broadly accepted practice. In 2015, the authors proposed a change in the analysis, according to which, when the nonlinearity iterations do not converge, the analysis proceeds to the next integration step. In this paper, this change, and no other change, is applied to seismic analysis according to the seismic code of New Zealand, NZS 1170.5:2004. The purpose is to clarify whether the change can increase the analysis efficiency. The possibility of improving the efficiency is shown via analysis of a tall building’s structural model. The observations are explained, discussed, and generalized. As a main result, the change proposed in 2015 may considerably improve the efficiency when the tolerance is sufficiently small and is ineffective when the nonlinearity tolerance is sufficiently large.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): International Institute of Earthquake Engineering and Seismology (IIEES)
Type: Conference contribution
Pages: 107-114
No. of pages: 8
Publication date: 2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Mechanics of Materials, Mechanical Engineering
Electronic version(s): https://doi.org/10.1007/978-3-031-15758-5_10 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{ec0d750d7055446c8858433f03a12de1,
title = "Test of an Idea for Improving the Efficiency of Nonlinear Time History Analyses When Implemented in Seismic Analysis According to NZS 1170.5:2004",
abstract = "For nonlinear time history analysis, employing a time integration method and some nonlinearity iterative method (for implicit analyses) is a broadly accepted practice. In 2015, the authors proposed a change in the analysis, according to which, when the nonlinearity iterations do not converge, the analysis proceeds to the next integration step. In this paper, this change, and no other change, is applied to seismic analysis according to the seismic code of New Zealand, NZS 1170.5:2004. The purpose is to clarify whether the change can increase the analysis efficiency. The possibility of improving the efficiency is shown via analysis of a tall building{\textquoteright}s structural model. The observations are explained, discussed, and generalized. As a main result, the change proposed in 2015 may considerably improve the efficiency when the tolerance is sufficiently small and is ineffective when the nonlinearity tolerance is sufficiently large.",
keywords = "Analysis efficiency, Iterations convergence, Nonlinear structural dynamics, Nonlinearity iterations, NZS 1170.5:2004, Time integration",
author = "Aram Soroushian and Peter Wriggers",
year = "2023",
doi = "10.1007/978-3-031-15758-5_10",
language = "English",
isbn = "9783031157578",
series = "Mechanisms and Machine Science",
publisher = "Springer Science and Business Media B.V.",
pages = "107--114",
editor = "Zuzana Dimitrovov{\'a} and Rodrigo Gon{\c c}alves and Zuzana Dimitrovov{\'a} and Paritosh Biswas and Tiago Silva",
booktitle = "Recent Trends in Wave Mechanics and Vibrations",
address = "Germany",
note = "10th International Conference on Wave Mechanics and Vibrations, WMVC 2022 ; Conference date: 04-07-2022 Through 06-07-2022",
}