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Simplified-super-element-method for analyzing free flexural vibration characteristics of periodically stiffened-thin-plate filled with viscoelastic damping material
Abstract Flexural vibration characteristics of a periodically stiffened-thin-plate filled with viscoelastic damping material (VDM) are researched originally based on a simplified-super-element-method (SSEM) according to Floquet–Bloch׳s theorem and super-element-method (SEM). The density, damping ratio (the parameters of the VDM), and the lattice constant of the structure, which impact the frequency characteristics of periodically stiffened-thin-plate, are thoroughly analyzed. The SSEM developed in this research ensured the accuracy and simplified calculation work. It can be used in designing a periodic or quasi-periodic thin plate and shell structures for improving the mechanical property. The advantages of this method are verified by comparing the structures that is and is not filled with VDM.
Highlights Dynamic matrices of periodic stiffened plate structure filled with viscoelastic material are established by the super-element-method. The matrices are simplified by Floquet–Bloch׳s theorem according to its periodicity. Research shows that with the increase of the parameters of viscoelastic material such as damping ratio and density, the band-gaps will change. Research shows that with the increase lattice constant, the band-gaps will change. Research shows that the structure filled with viscoelastic material periodically is more effective than which is non-filled.
Simplified-super-element-method for analyzing free flexural vibration characteristics of periodically stiffened-thin-plate filled with viscoelastic damping material
Abstract Flexural vibration characteristics of a periodically stiffened-thin-plate filled with viscoelastic damping material (VDM) are researched originally based on a simplified-super-element-method (SSEM) according to Floquet–Bloch׳s theorem and super-element-method (SEM). The density, damping ratio (the parameters of the VDM), and the lattice constant of the structure, which impact the frequency characteristics of periodically stiffened-thin-plate, are thoroughly analyzed. The SSEM developed in this research ensured the accuracy and simplified calculation work. It can be used in designing a periodic or quasi-periodic thin plate and shell structures for improving the mechanical property. The advantages of this method are verified by comparing the structures that is and is not filled with VDM.
Highlights Dynamic matrices of periodic stiffened plate structure filled with viscoelastic material are established by the super-element-method. The matrices are simplified by Floquet–Bloch׳s theorem according to its periodicity. Research shows that with the increase of the parameters of viscoelastic material such as damping ratio and density, the band-gaps will change. Research shows that with the increase lattice constant, the band-gaps will change. Research shows that the structure filled with viscoelastic material periodically is more effective than which is non-filled.
Simplified-super-element-method for analyzing free flexural vibration characteristics of periodically stiffened-thin-plate filled with viscoelastic damping material
Zhou, X.Q. (Autor:in) / Yu, D.Y. (Autor:in) / Shao, Xinyu (Autor:in) / Wang, Shaojun (Autor:in) / Zhang, S.Q. (Autor:in)
Thin-Walled Structures ; 94 ; 234-252
26.03.2015
19 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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| British Library Online Contents | 2016
Improved Free Flexural Vibration Analysis of Stiffened Plates
| British Library Online Contents | 1999