000013316 001__ 13316
000013316 005__ 20161114160336.0
000013316 04107 $$aeng
000013316 046__ $$k2009-06-22
000013316 100__ $$aLe Tallec, P.
000013316 24500 $$aData assimilation in structural mechanics using displacement feedback control

000013316 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013316 260__ $$bNational Technical University of Athens, 2009
000013316 506__ $$arestricted
000013316 520__ $$2eng$$aThe paper presents a numerical strategy able to control in a stable way the effect of the modelling errors in elastodynamics by using measurements of the boundary displacements. The basic idea is to apply a feedback within the numerical model not as a force but as a perturbation term in the equation relating displacement and velocity. The efficiency of the strategy is inherited from a proper choice of a boundary lifting operator which maximizes the energy dissipation properties of the system under study. The resulting estimation procedure is analysed and its performance is assessed by computing the estimation error in a test problem inspired from cardiac biomechanics.

000013316 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013316 653__ $$adata assimilation, displacement feedback, stabilisation, cardiac mechanics Abstract. The paper presents a numerical strategy able to control in a stable way the effect of the modelling errors in elastodynamics by using measurements of the boundary displacements. The basic idea is to apply a feedback within the numerical model not as a force but as a perturbation term in the equation relating displacement and velocity. The efficiency of the strategy is inherited from a proper choice of a boundary lifting operator which maximizes the energy dissipation properties of the system under study. The resulting estimation procedure is analysed and its performance is assessed by computing the estimation error in a test problem inspired from cardiac biomechanics.

000013316 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013316 720__ $$aLe Tallec, P.$$iChapelle, D.$$iMoireau, P.
000013316 8560_ $$ffischerc@itam.cas.cz
000013316 8564_ $$s2732433$$uhttps://invenio.itam.cas.cz/record/13316/files/CD463.pdf$$yOriginal version of the author's contribution as presented on CD, section: Inverse problems and system identification.
000013316 962__ $$r13074
000013316 980__ $$aPAPER