000015852 001__ 15852
000015852 005__ 20161115135331.0
000015852 04107 $$aeng
000015852 046__ $$k2013-06-12
000015852 100__ $$aCeresa, P.
000015852 24500 $$aModelling a Large-Scale Uniaxial Shaking Table Facility

000015852 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015852 260__ $$bNational Technical University of Athens, 2013
000015852 506__ $$arestricted
000015852 520__ $$2eng$$aAim of this research is the development and the calibration of a mathematical model for simulating the response of a large-scale uniaxial shaking table facility. The system to be modelled is composed of several interacting components such as the shaking table, the specimen to be tested and the reaction mass. The latter could be isolated by air suspension springs and damped by heavy duly automotive shock absorbers or could rest directly on the supporting soil. The proposed model has been developed to take into account the stiffness and the damping due to suspension system/shock absorber system as well as the flexibility of the supporting soil. The main novelty of the proposed model is the nonlinear kinematics taken into account in the formulation of the equations of motion of the dynamic system. The rocking of the reaction mass is modelled and the nonlinear kinematics due to large rotations associated to an intended uniaxial motion of the shaking table is considered. The nonlinear equations of motions are derived using the Lagrangian approach under the assumption of large displacements and large rotations. The proposed mathematical model has been derived to be general and capable of predicting the response of any given uniaxial shaking table whose response could be strongly affected by the rocking of the reaction mass. The derived system of nonlinear equations of motion has been applied for modelling the response of an existing large-scale dynamic testing facility – the shaking table of the Eucentre Laboratory. The obtained results seem very promising, useful for understanding the causes of the complex behaviour of the dynamic testing facility and instrumental for helping in future experimental campaigns.

000015852 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015852 653__ $$aLarge-scale dynamic testing facility, nonlinear kinematics, high-order nonlinear differential equations, numerical solver, experimental data

000015852 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015852 720__ $$aCeresa, P.$$iBrezzi, F.$$iCalvi, G-M.
000015852 8560_ $$ffischerc@itam.cas.cz
000015852 8564_ $$s566532$$uhttps://invenio.itam.cas.cz/record/15852/files/1561.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 06 DYNAMICS OF COUPLED PROBLEMS
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000015852 962__ $$r15525
000015852 980__ $$aPAPER