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Optimization of in-plane functionally graded panels for buckling strength: Unstiffened, stiffened panels, and panels with cutouts.
- Source :
-
Thin-Walled Structures . Jan2018, Vol. 122, p173-181. 9p. - Publication Year :
- 2018
-
Abstract
- The work of this paper deals with the in-plane material optimization with the objective of minimizing the amount of the nano-reinforcement required to satisfy the desired buckling constraints. The minimization of the reinforcement is necessary for nano-reinforced composites because the price of the reinforcement is very high. Three types of panels are considered; (1) unstiffened panel, (2) panels with cutouts, and (3) stiffened panels. The in-plane distribution of the reinforcement is represented using the polynomial expansion technique which is also extended to model non-rectangular domains via coordinates transformation. It was found that material grading can saves a very significant amount of the reinforcement up to 200% relative to homogenous panels. The saving of the reinforcement depends on four factors; (1) the problem nature, (2) the boundary conditions, (3) the applied loads, (4) the direction of the material gradings. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02638231
- Volume :
- 122
- Database :
- Academic Search Index
- Journal :
- Thin-Walled Structures
- Publication Type :
- Academic Journal
- Accession number :
- 126334612
- Full Text :
- https://doi.org/10.1016/j.tws.2017.10.025