Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform
In evaluation of structures, performing nonlinear response of model over a time analysis or incremental dynamic analysis needs more time. Hence, it can be beneficial if the event history report is carried out with long time steps without loss of accuracy. This study includes a method to simplify of...
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doaj-2ff5ef3c12d34a0f8368e84f9d8892dd2020-11-25T02:33:11ZengJVE InternationalJournal of Vibroengineering1392-87162538-84602017-12-011986170618210.21595/jve.2017.1832218322Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transformAlireza Faroughi0Mahmood Hosseini1Young Researchers and Elite Club, East Tehran Branch, Islamic Azad University, Tehran, IranStructural Engineering Research Center, International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, IranIn evaluation of structures, performing nonlinear response of model over a time analysis or incremental dynamic analysis needs more time. Hence, it can be beneficial if the event history report is carried out with long time steps without loss of accuracy. This study includes a method to simplify of accelerograms meant on the change of their Fourier reports. So, the Fourier Spectrum of the accelerogram is initially determined. Next applying a PC code generation, the similar Inverse Fourier Convert is computed utilizing a comparatively large time stage, depending on the structure’s times; that is ordinarily five to ten times bigger than primary accelerogram’s duration stage to generate the visible accelerogram. This application from the simplified accelerogram apparently takes much less time. Results indicates that the analysis time can be reduced up to 80 % by using the proposed method. While the maximum response shows an error of merely five to ten percent, about the sort of structure and the characteristics of the records used.https://www.jvejournals.com/article/18322Fourier and inverse Fourier transformsincremental dynamic analysistime stage size |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Alireza Faroughi Mahmood Hosseini |
spellingShingle |
Alireza Faroughi Mahmood Hosseini Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform Journal of Vibroengineering Fourier and inverse Fourier transforms incremental dynamic analysis time stage size |
author_facet |
Alireza Faroughi Mahmood Hosseini |
author_sort |
Alireza Faroughi |
title |
Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform |
title_short |
Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform |
title_full |
Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform |
title_fullStr |
Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform |
title_full_unstemmed |
Incremental dynamic analysis of SDOF by using nonlinear earthquake accelerograms based on modified inverse Fourier transform |
title_sort |
incremental dynamic analysis of sdof by using nonlinear earthquake accelerograms based on modified inverse fourier transform |
publisher |
JVE International |
series |
Journal of Vibroengineering |
issn |
1392-8716 2538-8460 |
publishDate |
2017-12-01 |
description |
In evaluation of structures, performing nonlinear response of model over a time analysis or incremental dynamic analysis needs more time. Hence, it can be beneficial if the event history report is carried out with long time steps without loss of accuracy. This study includes a method to simplify of accelerograms meant on the change of their Fourier reports. So, the Fourier Spectrum of the accelerogram is initially determined. Next applying a PC code generation, the similar Inverse Fourier Convert is computed utilizing a comparatively large time stage, depending on the structure’s times; that is ordinarily five to ten times bigger than primary accelerogram’s duration stage to generate the visible accelerogram. This application from the simplified accelerogram apparently takes much less time. Results indicates that the analysis time can be reduced up to 80 % by using the proposed method. While the maximum response shows an error of merely five to ten percent, about the sort of structure and the characteristics of the records used. |
topic |
Fourier and inverse Fourier transforms incremental dynamic analysis time stage size |
url |
https://www.jvejournals.com/article/18322 |
work_keys_str_mv |
AT alirezafaroughi incrementaldynamicanalysisofsdofbyusingnonlinearearthquakeaccelerogramsbasedonmodifiedinversefouriertransform AT mahmoodhosseini incrementaldynamicanalysisofsdofbyusingnonlinearearthquakeaccelerogramsbasedonmodifiedinversefouriertransform |
_version_ |
1724815807855198208 |