Critical input and response of elastic-plastic structures under long-duration earthquake ground motions
The multiple impulse input is introduced as a substitute of the long-duration earthquake ground motion, mostly expressed in terms of harmonic waves, and a closed-form solution is derived of the elastic-plastic response of a single-degree-of-freedom structure under the ‘critical multiple impulse inpu...
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Frontiers Media S.A.
2015-09-01
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Online Access: | http://journal.frontiersin.org/Journal/10.3389/fbuil.2015.00015/full |
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doaj-5ae434e948074e3c94260346bf3fb2ab2020-11-24T22:40:01ZengFrontiers Media S.A.Frontiers in Built Environment2297-33622015-09-01110.3389/fbuil.2015.00015163437Critical input and response of elastic-plastic structures under long-duration earthquake ground motionsKotaro eKojima0Izuru eTakewaki1Kyoto UniversityKyoto UniversityThe multiple impulse input is introduced as a substitute of the long-duration earthquake ground motion, mostly expressed in terms of harmonic waves, and a closed-form solution is derived of the elastic-plastic response of a single-degree-of-freedom structure under the ‘critical multiple impulse input’. Since only the free-vibration appears under such multiple impulse input, the energy approach plays an important role in the derivation of the closed-form solution of a complicated elastic-plastic response. It is shown that the critical inelastic deformation and the corresponding critical input frequency can be captured depending on the input level by the substituted multiple impulse input in the form of original and modified input sequence. The validity and accuracy of the proposed theory are investigated through the comparison with the response analysis to the corresponding sinusoidal input as a representative of the long-duration earthquake ground motion.http://journal.frontiersin.org/Journal/10.3389/fbuil.2015.00015/fullresonanceEarthquake ResponseDuctility factorCritical responseLong-duration ground motionMultiple impulse |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kotaro eKojima Izuru eTakewaki |
spellingShingle |
Kotaro eKojima Izuru eTakewaki Critical input and response of elastic-plastic structures under long-duration earthquake ground motions Frontiers in Built Environment resonance Earthquake Response Ductility factor Critical response Long-duration ground motion Multiple impulse |
author_facet |
Kotaro eKojima Izuru eTakewaki |
author_sort |
Kotaro eKojima |
title |
Critical input and response of elastic-plastic structures under long-duration earthquake ground motions |
title_short |
Critical input and response of elastic-plastic structures under long-duration earthquake ground motions |
title_full |
Critical input and response of elastic-plastic structures under long-duration earthquake ground motions |
title_fullStr |
Critical input and response of elastic-plastic structures under long-duration earthquake ground motions |
title_full_unstemmed |
Critical input and response of elastic-plastic structures under long-duration earthquake ground motions |
title_sort |
critical input and response of elastic-plastic structures under long-duration earthquake ground motions |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Built Environment |
issn |
2297-3362 |
publishDate |
2015-09-01 |
description |
The multiple impulse input is introduced as a substitute of the long-duration earthquake ground motion, mostly expressed in terms of harmonic waves, and a closed-form solution is derived of the elastic-plastic response of a single-degree-of-freedom structure under the ‘critical multiple impulse input’. Since only the free-vibration appears under such multiple impulse input, the energy approach plays an important role in the derivation of the closed-form solution of a complicated elastic-plastic response. It is shown that the critical inelastic deformation and the corresponding critical input frequency can be captured depending on the input level by the substituted multiple impulse input in the form of original and modified input sequence. The validity and accuracy of the proposed theory are investigated through the comparison with the response analysis to the corresponding sinusoidal input as a representative of the long-duration earthquake ground motion. |
topic |
resonance Earthquake Response Ductility factor Critical response Long-duration ground motion Multiple impulse |
url |
http://journal.frontiersin.org/Journal/10.3389/fbuil.2015.00015/full |
work_keys_str_mv |
AT kotaroekojima criticalinputandresponseofelasticplasticstructuresunderlongdurationearthquakegroundmotions AT izuruetakewaki criticalinputandresponseofelasticplasticstructuresunderlongdurationearthquakegroundmotions |
_version_ |
1725706243901751296 |