000019388 001__ 19388
000019388 005__ 20170118182316.0
000019388 04107 $$aeng
000019388 046__ $$k2017-01-09
000019388 100__ $$aChen, Cheng
000019388 24500 $$aEffect of Actuator Delay on Uncertainty Quantification for Real-Time Hybrid Simulation

000019388 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019388 260__ $$b
000019388 506__ $$arestricted
000019388 520__ $$2eng$$aAnalysis of uncertainties in numerical substructure is necessary to estimate the variance of structural response obtained from structural experiments through the hybrid simulation technique. In a real-time hybrid simulation, the servo-hydraulic actuators apply the desired responses to the experimental substructures in a real-time manner. It has been observed that actuator delay could be reduced but cannot be eliminated. In this study, the effect of actuator delay on uncertainty quantification is investigated for real-time hybrid simulation through polynomial chaos expansion. Responses of a singledegree-of-freedom system are projected on a series of orthogonal stochastic functions then represented using simple polynomials. The mean and variance from polynomial chaos expansion are compared between the cases with and without delay. Actuator delay in a real-time hybrid simulation is observed to result in increases of mean and variance for the structural responses. Sensitivity analysis also indicates actuator delay can affect the variance on uncertainty quantification in real-time hybrid simulation.

000019388 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019388 653__ $$areal-time hybrid Simulation, polynomial chaos expansion, uncertainty quantification

000019388 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019388 720__ $$aChen, Cheng
000019388 8560_ $$ffischerc@itam.cas.cz
000019388 8564_ $$s204717$$uhttps://invenio.itam.cas.cz/record/19388/files/3531.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3531.
000019388 962__ $$r16048
000019388 980__ $$aPAPER