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Dynamic instability analysis of sandwich plates with auxetic honeycomb core and three-phase hybrid composite layers stiffened by curved stiffeners using isogeometric analysis
Publikationstyp
Journal Article
Publikationsdatum
2024-06-01
Sprache
English
Author
Enthalten in
Volume
308
Article Number
117960
Citation
Engineering Structures 308: 117960 (2024)
Publisher DOI
Scopus ID
Publisher
Elsevier Science
This article investigates the dynamic instability of a stiffened sandwich plate with an auxetic honeycomb core and three-phase hybrid composite (PMMA/GPL/Carbon fiber) layers. To achieve this objective, the governing equations related to the plate and stiffener are expanded using the first-order shear deformation theory (FSDT). The isogeometric analysis (IGA) method is employed to solve these governing equations. The results are compared with data from previously published articles to validate their accuracy and demonstrate the high precision of the isogeometric analysis method for analyzing stiffened sandwich plates. In this study, the dynamic instability of a stiffened sandwich plate is studied by creating a non-conformed interface between the stiffener and the plate surface. Furthermore, this study investigates how stiffeners, geometric and mechanical characteristics of the auxetic honeycomb core, and three-phase hybrid composite layers simultaneously affect the dynamic instability of a sandwich plate.
Schlagworte
Auxetic honeycomb
Carbon fiber
Curvilinearly stiffener
Dynamic instability
First-order shear deformation theory
Graphene nanoplatelets
Isogeometric analysis method
Stiffened sandwich plate
Three-phase hybrid composite layers
DDC Class
620: Engineering