Novel Sandwich Composite Shell Structures in Nonlinear Geometric and Dynamic Analyses
Uloženo v:
| Název: | Novel Sandwich Composite Shell Structures in Nonlinear Geometric and Dynamic Analyses |
|---|---|
| Autoři: | Nguyen Cong Tan, Nguyen Manh Dzung, Nguyen Hoang Ha, Nguyen Duc Tien, Nguyen Chi Hung, A. H. Sofiyev, Dinh Gia Ninh |
| Zdroj: | AIAA Journal. 63:3871-3894 |
| Informace o vydavateli: | American Institute of Aeronautics and Astronautics (AIAA), 2025. |
| Rok vydání: | 2025 |
| Popis: | This research introduces a novel structure for a doubly curved shallow shell, termed the “single-variable-edge and variable-thickness doubly curved shallow shell” (SVEVT-DCSS). The shell is constructed from a functionally graded carbon nanotube/fiber/polymer multiscale laminated composite with three distinct carbon nanotube distribution patterns: uniform distribution (UD), FG-O, and FG-X. These distributions are modeled using the Halpin–Tsai micromechanical approach and an orthotropic micromechanical model. Employing the theory of elasticity and the Von Karman–Donnell geometrical nonlinearity assumption, the governing equations for the mechanical behavior of the shell, which rests on a Winkler–Pasternak elastic foundation and is subjected to a thermomechanical environment, are formulated. By applying Galerkin’s method to these equations, the dynamic characteristics of the shell are determined. The nonlinear dynamic responses of the SVEVT-DCSS are analyzed with a focus on both periodic and chaotic behavior. Furthermore, the accuracy and reliability of the results are validated through comparisons with existing literature and finite element method simulations. The findings, presented through numerical tables and graphical figures, demonstrate the significant potential of this novel shell structure for practical engineering applications, contributing to advancements in aerospace, civil, and mechanical engineering. |
| Druh dokumentu: | Article |
| Jazyk: | English |
| ISSN: | 1533-385X 0001-1452 |
| DOI: | 10.2514/1.j065315 |
| Přístupové číslo: | edsair.doi...........8ee143541c8db4af3e412def0ca1fa37 |
| Databáze: | OpenAIRE |
Nájsť tento článok vo Web of Science | Abstrakt: | This research introduces a novel structure for a doubly curved shallow shell, termed the “single-variable-edge and variable-thickness doubly curved shallow shell” (SVEVT-DCSS). The shell is constructed from a functionally graded carbon nanotube/fiber/polymer multiscale laminated composite with three distinct carbon nanotube distribution patterns: uniform distribution (UD), FG-O, and FG-X. These distributions are modeled using the Halpin–Tsai micromechanical approach and an orthotropic micromechanical model. Employing the theory of elasticity and the Von Karman–Donnell geometrical nonlinearity assumption, the governing equations for the mechanical behavior of the shell, which rests on a Winkler–Pasternak elastic foundation and is subjected to a thermomechanical environment, are formulated. By applying Galerkin’s method to these equations, the dynamic characteristics of the shell are determined. The nonlinear dynamic responses of the SVEVT-DCSS are analyzed with a focus on both periodic and chaotic behavior. Furthermore, the accuracy and reliability of the results are validated through comparisons with existing literature and finite element method simulations. The findings, presented through numerical tables and graphical figures, demonstrate the significant potential of this novel shell structure for practical engineering applications, contributing to advancements in aerospace, civil, and mechanical engineering. |
|---|---|
| ISSN: | 1533385X 00011452 |
| DOI: | 10.2514/1.j065315 |