نتایج جستجو برای: von karman
تعداد نتایج: 96855 فیلتر نتایج به سال:
Active Flutter Suppression of Smart-Skin Antenna Structures with Piezoelectric Sensors and Actuators
A smart-skin antenna structure is investigated for active flutter control with piezoelectric sensors and actuators. The skin designed as a multilayer sandwich dielectric polymer to perform the role of or radar structures. governing equations are developed according first-order shear deformation theory, von Karman strain–displacement relationships used moderate geometrical nonlinearity. To consi...
Mechanical buckling response of isotropic and orthotropic plates using the two variable refined plate theory is presented in this paper. The takes account transverse shear effects parabolic distribution strains through thickness plate; hence it unnecessary to use correction factors. Governing equations are derived from principle virtual displacements. nonlinear strain-displacement Von Karman re...
We study the transition from laminar flow to fully developed turbulence for an inertially-driven von Kármán flow between two counter-rotating large impellers fitted with curved blades over a wide range of Reynolds number (10 − 10). The transition is driven by the destabilisation of the azimuthal shear-layer, i.e., Kelvin–Helmholtz instability which exhibits travelling/drifting waves, modulated ...
We apply two recently formulated mathematical techniques, Slow-Fast Decomposition (SFD) and Spectral Submanifold (SSM) reduction, to a von Kármán beam with geometric nonlinearities and viscoelastic damping. SFD identifies a global slow manifold in the full system which attracts solutions at rates faster than typical rates within the manifold. An SSM, the smoothest nonlinear continuation of a li...
Abstract In this study, the first-order shear deformation theory (FSDT) is used to establish a nonlinear dynamic model for conical shell truncated by functionally graded graphene platelet-reinforced composite (FG-GPLRC). The vibration analyses of FG-GPLRC are presented. Considering platelets (GPLs) with three different distribution patterns, modified Halpin-Tsai calculate effective Young’s modu...
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