000019547 001__ 19547
000019547 005__ 20170118182323.0
000019547 04107 $$aeng
000019547 046__ $$k2017-01-09
000019547 100__ $$aTapia, Nicolas
000019547 24500 $$aEccentric Lever Arm Amplification System for Frictional Energy Dissipation Devices

000019547 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019547 260__ $$b
000019547 506__ $$arestricted
000019547 520__ $$2eng$$aRecent analytic, experimental, and practical studies are developing energy dissipation devices combined with amplifying mechanisms (AM) to enhance the seismic perfomance of structures with small inter-story deformations. This research presents the theoretical and experimental development of the Eccentric Lever-Arm System (ELAS), a new system which is a combination of an AM with one or more dampers capable of supporting large deformations. This work is divided in four parts: (1) kinematics of the ELAS and definition of an equivalent system without AM; (2) parametric analysis of a linear single-story structure with ELAS; (3) numerical analysis of a stiff multi-degree of-freedom structure with two types of frictional dampers; and (4) pseudo-dynamic tests of a full scale asymmetric one story steel structure with and without frictional dampers. Parametric analyses demonstrate that using high amplification ratios and low supplemental damping could be a very good practice . On the other hand, similar to systems without AMs, dissipation efficiency increases conformably with the stiffness of the secondary structure. As expected, it was observed that deformation was highly concentrated in the flexible edge of the asymmetric test model without damper. Conversely, the structure with frictional AAD clearly showed uniform plane deformation (i.e. tosional balance). The implemented AM, which has a large amplifying ratio of 11, performed with close accordance with numerical simulations.

000019547 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019547 653__ $$aeccentric lever-arm system, Added stiffness and damping, Amplifying mechanism, Torsional balance, Pseudodynamic test, Seismic protection, structural response.

000019547 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019547 720__ $$aTapia, Nicolas$$iBaquero, Juan$$iAlmazan, Jose
000019547 8560_ $$ffischerc@itam.cas.cz
000019547 8564_ $$s661607$$uhttps://invenio.itam.cas.cz/record/19547/files/3870.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3870.
000019547 962__ $$r16048
000019547 980__ $$aPAPER