000012574 001__ 12574
000012574 005__ 20160920162630.0
000012574 04107 $$aeng
000012574 046__ $$k2016-09-05
000012574 100__ $$aDziedziech, K.
000012574 24500 $$aNon-linear damping identification in tuned liquid column dampers

000012574 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012574 260__ $$bTaylor and Francis Group, London, UK
000012574 506__ $$arestricted
000012574 520__ $$2eng$$aBroadband environmental vibration excitation coming for example from wind, ocean wave and earthquakes are especially dangerous for flexible tall structures (e.g. wind turbines, towers or cable-stayed bridges). Liquid Dampers have been studied for almost thirty years in terms of their capability for suppression of vibration in these types of structures. The work presented in this paper will focus on Tunes Liquid Column Dampers and non-linear damping identification. Experimental test were conducted on the test rig with the white noise excitation with use of hydraulic shaker. Exponential decay of the displacement of the water level in the columns was measured and analysed. Identification procedure was conducted in few steps, i.e. mode separation with use of Continuous Wavelet Transform was done at first, and then identification of instantaneous damping ratio for 1st mode of vibration. It will be shown that damping ratio is a non-linear and depend on the level of vibration.

000012574 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012574 653__ $$a

000012574 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012574 720__ $$aDziedziech, K.$$iStaszewski, W.J.$$iUhl, T.$$iGhosh, A.$$iBasu, B.
000012574 8560_ $$ffischerc@itam.cas.cz
000012574 8564_ $$s1593546$$uhttp://invenio.itam.cas.cz/record/12574/files/022.pdf$$yOriginal version of the author's contribution as presented on CD, 022.pdf.
000012574 962__ $$r12552
000012574 980__ $$aPAPER