000015641 001__ 15641
000015641 005__ 20161115135325.0
000015641 04107 $$aeng
000015641 046__ $$k2013-06-12
000015641 100__ $$aGultom, R.
000015641 24500 $$aReal-Time Error Correction in Fast Pseudodynamic Testing: a Numerical Study

000015641 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015641 260__ $$bNational Technical University of Athens, 2013
000015641 506__ $$arestricted
000015641 520__ $$2eng$$aUndershooting error is a common error in fast pseudodynamic (PSD) tests as a result of inherent actuator lag. This type of systematic error introduces energy into a system, which if not monitored or controlled, can result in test instability and causes the response to grow exponentially. This leads to premature termination of a test and unreliable result. By considering the systematic error as negative damping in a structure, this paper proposes an intuitive error-correction scheme to compensate for the error. The key to this scheme is the introduction of a variable amount of viscous damping at every integration time step during the pseudodynamic test. The amount of time-varying viscous damping is derived by equating the magnitude of the energy error with that dissipated by the introduced damping at every integration time step. The accuracy and simplicity of the proposed error-correction scheme is demonstrated through numerical simulations of a linear-elastic SDOF structure and a two DOF structure subjected to sinusoidal ground motions.

000015641 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015641 653__ $$aFast Pseudodynamic Tests, Undershooting Error, Numerical Simulation

000015641 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015641 720__ $$aGultom, R.$$iMa, Q.
000015641 8560_ $$ffischerc@itam.cas.cz
000015641 8564_ $$s411324$$uhttps://invenio.itam.cas.cz/record/15641/files/1187.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 25 SIMULATION METHODS FOR DYNAMIC PROBLEMS
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000015641 962__ $$r15525
000015641 980__ $$aPAPER