000021673 001__ 21673
000021673 005__ 20170622131259.0
000021673 04107 $$aeng
000021673 046__ $$k2017-06-15
000021673 100__ $$aAkhavan, Hamed
000021673 24500 $$aFLUTTER ANALYSIS OF COMPOSITE LAMINATES WITH CURVILINEAR FIBRES

000021673 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021673 260__ $$bNational Technical University of Athens, 2017
000021673 506__ $$arestricted
000021673 520__ $$2eng$$aIn this investigation, the authors intend to study the dynamic instability (flutter) of variable stiffness composite laminates (VSCLs) in the presence of supersonic flow. In the type of VSCL considered here, plies have curvilinear fibres and, consequently, the stiffness is variable in a macroscopic view. The plates considered are rectangular. In each ply, a reference fibre path, represented by a function of horizontal coordinate x, is defined. The reference fibre path orientation changes linearly from T0 at the centre to T1 at both vertical edges of the ply; the other fibre paths are defined shifting the reference path in direction y. The displacement and rotations are defined using a Third-order Shear Deformation Theory, and then they are discretised by a p-version finite element model that applies to VSCL plates. Piston theory is employed to model the aerodynamic force of the upstream flow in direction x. Flutter airspeeds are investigated for VSCL plates with different fibre angles. Changes of flutter speed are evaluated in two different regimes of steady and unsteady flow.

000021673 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021673 653__ $$aFlutter, Composite Plate, Piston Theory, Curvilinear Fibres, Variable Stiffness.

000021673 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021673 720__ $$aAkhavan, Hamed$$iRibeiro, Pedro
000021673 8560_ $$ffischerc@itam.cas.cz
000021673 8564_ $$s284952$$uhttps://invenio.itam.cas.cz/record/21673/files/17469.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS11] Nonlinear dynamics
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000021673 962__ $$r21500
000021673 980__ $$aPAPER