Modeling of viscoelastic sandwich beams using solid-shell finite elements
Article dans une revue avec comité de lecture
URI
http://www.sciencedirect.com/science/article/pii/S0263822315006017http://hdl.handle.net/10985/10266
Date
2015Journal
Composite StructuresRésumé
The aim of this work is to propose vibration modeling of sandwich structures with soft core using solid-shell finite elements. Several approaches have been adopted in the literature to accurately model this type of structures; however, they show some limitations in certain configurations of high contrast of material properties or geometric aspect ratios between the different layers. In such situations, it is generally well-known that the use of higher-order or three-dimensional finite elements is more appropriate, but will generate a large number of degrees of freedom and, thereby, large CPU times. In this work, an alternative method is proposed by considering a recently developed linear hexahedral solid-shell element. This solid-shell element is implemented into Matlab in order to use the so-called solver Diamant, which couples Asymptotic Numerical Method (ANM) and Automatic Differentiation (AD). Numerical tests, including various cantilever sandwich beams as well as a simplified pattern of rail on sleepers, are performed to show the efficiency of the proposed approach.
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Communication avec acteThe aim of this work is to propose a new finite element modeling for vibration of sandwich structures with soft core. Indeed, several approaches have been adopted in the literature to accurately model these types of ...
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Communication avec acteKPEKY, Fessal; BOUDAOUD, Hakim; DAYA, El Mostafa; ABED-MERAIM, Farid (Association Française de Mécanique, 2015)Dans les dernières décennies, les structures à parois minces intégrant des couches ou patchs de matériaux piézoélectriques ont eu un essor. Ils sont utilisés pour le contrôle des vibrations et de forme, le contrôle acoustique, ...
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Conférence invitéeBecause vibrations often lead to noise and system dysfunction, they are therefore undesirable in many situations. One of the proposed ways developed in the literature to reduce vibrations is the use of sandwich structures ...
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Article dans une revue avec comité de lectureIn this paper, hexahedral piezoelectric solid–shell finite element formulations, with linear and quadratic interpolation, denoted by SHB8PSE and SHB20E, respectively, are proposed for the modeling of piezoelectric sandwich ...
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Communication avec acteKPEKY, Fessal; DAYA, El Mostafa; ABED-MERAIM, Farid (A. Güemes, A. Benjeddou , J. Rodellar and Jinsong Leng, 2017)This paper presents an assessment of the performances of new piezoelectric solid−shell finite elements. Compared to conventional solid and shell elements, the solid–shell concept reveals to be very attractive, due to a ...