000021502 001__ 21502
000021502 005__ 20170622131249.0
000021502 04107 $$aeng
000021502 046__ $$k2017-06-15
000021502 100__ $$aNguyen, Thuong Anh
000021502 24500 $$aEQUIVALENT LINEARIZATION USING TRANSFER FUNCTION APPLIED TO PIPING SYSTEMS IN SEISMIC ENGINEERING

000021502 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021502 260__ $$bNational Technical University of Athens, 2017
000021502 506__ $$arestricted
000021502 520__ $$2eng$$aIn post-Fukushima context, the question of the capacity of NNP to withstand design seismic hazard is now a prior concern. Many NNPs must be reevaluated within a higher level of seismic load by taking into account the nonlinearity of the structure, which is not an easy task because of the need of computational capacity due to many iterations required at each step in order to satisfy the equilibrium. That is the reason why many authors investigated about establishing the linearization concept for many years. The general idea is to identify a linear system which replaces the nonlinear one by using certain equivalence criterions. In this paper, we deal with a systematic and argumentative analysis in order to establish a concept of equivalent linearization by considering the equivalence criterion through the transfer function from the time domain to the frequency domain. The idea is to identify the frequency and damping of the equivalent linear oscillator whose theoretical transfer function of response in acceleration fits the best the experimental one of the nonlinear system. This concept will be applied to an elastoplastic oscillator undergoing the filtered white noise signal Clough-Penzien. As conclusion, the result of the equivalent linearization by using transfer function corresponds to the experimental results of piping systems such as EPRI 1994 or BARC 2015. Furthermore, we propose a new approach to re-establish the transferred motion through a structure with nonlinearities using these results in seismic engineering. 

000021502 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021502 653__ $$a

000021502 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021502 720__ $$aNguyen, Thuong Anh$$iSemblat, Jean-François$$iLabbe, Pierre$$iHerve, Guillaume
000021502 8560_ $$ffischerc@itam.cas.cz
000021502 8564_ $$s117007$$uhttps://invenio.itam.cas.cz/record/21502/files/16721.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS10] Advances in Numerical Methods for Linear and Non-Linear Dynamics and Wave Propagation
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000021502 962__ $$r21500
000021502 980__ $$aPAPER