000022326 001__ 22326
000022326 005__ 20170622150008.0
000022326 04107 $$aeng
000022326 046__ $$k2015-05-25
000022326 100__ $$aChronopoulos, Dimitrios
000022326 24500 $$aWAVE BASED DESIGN OPTIMISATION OF COMPOSITE STRUCTURES OPERATING IN DYNAMIC ENVIRONMENTS

000022326 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022326 260__ $$bNational Technical University of Athens, 2015
000022326 506__ $$arestricted
000022326 520__ $$2eng$$aThe optimal mechanical and geometric characteristics for layered composite structures subject to vibroacoustic excitations are derived. A Finite Element description coupled to Periodic Structure Theory is employed for the considered layered panel. Structures of arbitrary anisotropy as well as geometric complexity can thus be modelled by the presented approach. Initially, a numerical continuum-discrete approach for computing the sensitivity of the acoustic wave characteristics propagating within the modelled periodic composite structure is exhibited. The first and second order sensitivities of the acoustic transmission coefficient expressed within a Statistical Energy Analysis context are subsequently derived as a function of the computed acoustic wave characteristics. Having formulated the gradient vector as well as the Hessian matrix, the optimal mechanical and geometric characteristics satisfying the considered mass, stiffness and vibroacoustic performance criteria are sought by employing Newton’s optimisation method.

000022326 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022326 653__ $$aStructural design optimisation, Vibroacoustic response, Composite structures, Wave propagation

000022326 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022326 720__ $$aChronopoulos, Dimitrios$$iAntoniadis, Ioannis$$iIchchou, Mohamed$$iCollet, Manuel
000022326 8560_ $$ffischerc@itam.cas.cz
000022326 8564_ $$s286499$$uhttps://invenio.itam.cas.cz/record/22326/files/C480.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022326 962__ $$r22030
000022326 980__ $$aPAPER