000019016 001__ 19016
000019016 005__ 20170118182255.0
000019016 04107 $$aeng
000019016 046__ $$k2017-01-09
000019016 100__ $$aBrewick, Patrick
000019016 24500 $$aExperimental Identification of Force-Displacement Behavior for Passive Dampers in a Four Story, Reinforced Concrete, "Smart" Base-Isolated Structure

000019016 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019016 260__ $$b
000019016 506__ $$arestricted
000019016 520__ $$2eng$$aIn this paper, the force and displacement sensing data from full-scale experimental tests of a base-isolated structure are analyzed to create a model for the hysteretic behavior observed in the isolators; the intent is that this model could be used for future nonlinear finite element studies and simulations. Displacement data is available in both of the horizontal planar directions of the motion, meaning that the hysteric force will be bi-axial and, thus, modeled by coupled nonlinear differential equations. A Bouc-Wen model was assumed for parameter fitting. Identification was first performed using the random base motions; however, it was revealed that the amplitudes of motion were small enough that the isolators exhibited generally linear behavior. A series of tests were also conducted in which the input intensity of both historical and synthetic earthquakes was gradually increased. Due to the well-documented amplitude dependence of nonlinear phenomena, the tests with the largest input amplitudes were using for identification; the resulting parameters were applied to the lower intensity tests to evaluate the model’s ability to predict responses of different levels of excitation.

000019016 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019016 653__ $$alarge-scale experimental testing; nonlinear identification; hysteresis

000019016 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019016 720__ $$aBrewick, Patrick$$iJohnson, Erik$$iChristenson, Richard
000019016 8560_ $$ffischerc@itam.cas.cz
000019016 8564_ $$s6027172$$uhttps://invenio.itam.cas.cz/record/19016/files/2688.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2688.
000019016 962__ $$r16048
000019016 980__ $$aPAPER