000021963 001__ 21963
000021963 005__ 20170622131314.0
000021963 04107 $$aeng
000021963 046__ $$k2017-06-15
000021963 100__ $$aBachmann, Jonas
000021963 24500 $$aPROBABILISTIC VALIDATION OF THE HOUSNER ROCKING MODEL

000021963 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021963 260__ $$bNational Technical University of Athens, 2017
000021963 506__ $$arestricted
000021963 520__ $$2eng$$aThe rocking oscillator has drawn the attention of many researchers since the publication of Housner’s [1] seminal paper. As the response of the rocking oscillator is highly non-linear and exhibits negative stiffness [2] many researchers have suggested treating the rocking oscillator as a chaotic system, in the sense that small perturbations of its governing parameters result to widely diverging outcomes. Researchers that have tried to experimentally validate Housner’s model have shown that, given the modelling uncertainty, it is hard to confidently predict the time history response of a rocking block to a specific ground motion. This makes practicing engineers hesitant to adopt rocking as an earthquake response modification strategy. However, accurately predicting the response to a single ground motion would be ideal but it is not a necessary condition to trust a model: there is so much uncertainty in the expected ground motion that could overshadow the modelling uncertainty. To take the former uncertainty into account, in common practice, engineers use an ensemble of ground motions when they perform a time history analysis. Therefore, it is reasonable to try to compare numerical experimental testing results in terms of their statistics. If the numerical model is capable of capturing the statistics of the experimental testing, then, in terms of civil engineering design, the model is trustworthy. The first ones to adopt a probabilistic approach were Yim, Chopra and Penzien [3] who as early as in 1980 observed some order in rocking motion when they studied it from a probabilistic point of view. They observed specific trends in their numerical results when, instead of using only one, they used 10 synthetic ground motions. This paper compares the numerical and experimental response of a rigid rocking block when excited by an ensemble of 100 ground motions that share the statistical properties of original ground motion.

000021963 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021963 653__ $$aRocking, uplifting structures, earthquake engineering, chaotic motion, probabilistic analysis.

000021963 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021963 720__ $$aBachmann, Jonas$$iStojadinovic, Bozidar$$iBroccardo, Marco$$iVassiliou, Michalis$$iStrand, Mathias
000021963 8560_ $$ffischerc@itam.cas.cz
000021963 8564_ $$s3885437$$uhttps://invenio.itam.cas.cz/record/21963/files/18485.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS30] Dynamics and Seismic Response of Rocking and Self-centering Structures
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000021963 962__ $$r21500
000021963 980__ $$aPAPER