Abstract
An innovative design methodology is proposed for the simultaneous layout and sizing optimization of stiffened panels. A computer-aided design (CAD) modelling tool is used to generate the panel geometry and parameterize the stiffeners layout. The same geometric parameterization is used in the gradient-based optimization. Therefore no additional constraints are applied on grid points coordinates in order to conform with the geometric requirements. The proposed method also eliminates the extra step of converting the optimal design back to the CAD model. An effective parameterization scheme is used that defines the location and orientation of a stiffener with only two layout design variables. The sensitivities of the structural responses with respect to both layout and sizing design variables are computed through the semi-analytical method of Nastran. The proposed methodology is used to re-design a benchmark metallic stiffened panel from literature. The obtained results are used to demonstrate the effectiveness of the proposed method.
Original language | English |
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Title of host publication | 33rd Congress of the International Council of the Aeronautical Sciences, ICAS 2022 |
Publisher | International Council of the Aeronautical Sciences |
Pages | 3616-3625 |
Number of pages | 10 |
ISBN (Electronic) | 9781713871163 |
Publication status | Published - 2022 |
Event | 33rd Congress of the International Council of the Aeronautical Sciences, ICAS 2022 - Stockholm, Sweden Duration: 4 Sept 2022 → 9 Sept 2022 Conference number: 33 |
Publication series
Name | 33rd Congress of the International Council of the Aeronautical Sciences, ICAS 2022 |
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Volume | 5 |
Conference
Conference | 33rd Congress of the International Council of the Aeronautical Sciences, ICAS 2022 |
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Abbreviated title | ICAS 2022 |
Country/Territory | Sweden |
City | Stockholm |
Period | 4/09/22 → 9/09/22 |
Keywords
- buckling
- CAD-based parameterization
- gradient-based optimization
- metallic stiffened panel
- Simultaneous layout and sizing optimization