000013720 001__ 13720
000013720 005__ 20161114170253.0
000013720 04107 $$aeng
000013720 046__ $$k2011-05-25
000013720 100__ $$aManos, G.
000013720 24500 $$aInvestigation of the Sliding Response of a Rigid Body System Subjected to Uni-Direction Horizontal Dynamic and Earthquake Excitations

000013720 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013720 260__ $$bNational Technical University of Athens, 2011
000013720 506__ $$arestricted
000013720 520__ $$2eng$$aAn experimental and numerical investigation is presented that studies the sliding response of a rigid body when subjected to horizontal dynamic and earthquake excitations. For this purpose, a steel block mock-up of a rigid body has been constructed and tested at the shaking table of Aristotle University. The dynamic excitations were based on either sinusoidal motions of various amplitudes and frequencies or simulated earthquake excitations based on actual recordings of prototype earthquake ground motions. The experimental results have shown that when sliding of this rigid block is permitted then its peak acceleration response is moderately amplified, provided that the excitation frequency is not close to the resonant frequency range of the block-spring dynamic system. This is particularly true for earthquake excitations and for relatively flexible spring-links thus achieving in this way a type of seismic isolation for the rigid block. A computer software was developed in order to numerically simulated this dynamic sliding response. The numerical results obtained through this specially developed computer software are next compared with the corresponding experimental measurements. The numerically predicted rigid block acceleration response is in good agreement, in all examined cases, with the measured values. The numerically predicted rigid body sliding displacement response also exhibits innumerous cases good agreement with the measured values. However, significant deviation between predicted and measured rigid body sliding displacement amplitudes were also observed. Despite these limitations of the predicted results it is believed that the developed software, although it deals with a complex problem in a relatively simple way, it can be useful in the preliminary design of structural systems with sliding capability at their support.

000013720 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013720 653__ $$aSliding, Rigid Body, Friction, Seismic Isolation.

000013720 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013720 720__ $$aManos, G.$$iKoidis, G.$$iDemosthenous, M.
000013720 8560_ $$ffischerc@itam.cas.cz
000013720 8564_ $$s1827127$$uhttps://invenio.itam.cas.cz/record/13720/files/567.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 14 Innovative vs. Conventional Retrofitting of Existing Buildings.
000013720 962__ $$r13401
000013720 980__ $$aPAPER