Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal Design
Thin-walled composite box beam structural configuration is representative of a specific high aspect ratio wing structure. The optimal design procedure and lay-up definition including appropriate coupling necessary for aerospace applications has been identified by means of “ad hoc” analytical formula...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/7/8/111 |
| _version_ | 1797560626222989312 |
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| author | Enrico Cestino Giacomo Frulla Paolo Piana Renzo Duella |
| author_facet | Enrico Cestino Giacomo Frulla Paolo Piana Renzo Duella |
| author_sort | Enrico Cestino |
| collection | DOAJ |
| description | Thin-walled composite box beam structural configuration is representative of a specific high aspect ratio wing structure. The optimal design procedure and lay-up definition including appropriate coupling necessary for aerospace applications has been identified by means of “ad hoc” analytical formulation and by application of commercial code. The overall equivalent bending, torsional and coupled stiffness are derived and the accuracy of the simplified beam model is demonstrated by the application of Altair Optistruct. A simple case of a coupled cantilevered beam with load at one end is introduced to demonstrate that stiffness and torsion angle distribution does not always correspond to the trends that one would intuitively expect. The maximum of torsional stiffness is not obtained with fibers arranged at 45° and, at the maximum torsional stiffness, there is no minimum rotation angle. This observation becomes essential in any design process of composite structures where the constraints impose structural couplings. Furthermore, the presented theory is also extended to cases in which it is necessary to include composite/stiffened hybrid configurations. Good agreement has been found between the theoretical simplified beam model and numerical analysis. Finally, the selected composite configuration was compared to an experimental test case. The numerical and experimental validation is presented and discussed. A good correlation was found confirming the validity of the overall optimization for the optimal lay-up selection and structural configuration. |
| first_indexed | 2024-03-10T18:03:15Z |
| format | Article |
| id | doaj.art-8600670bc0b44a25929517614393fb84 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-10T18:03:15Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-8600670bc0b44a25929517614393fb842023-11-20T08:42:51ZengMDPI AGAerospace2226-43102020-07-017811110.3390/aerospace7080111Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal DesignEnrico Cestino0Giacomo Frulla1Paolo Piana2Renzo Duella3Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, ItalyTesco Go SRL, Via Dell’industria 11, 10023 Chieri (TO), ItalyTesco Go SRL, Via Dell’industria 11, 10023 Chieri (TO), ItalyThin-walled composite box beam structural configuration is representative of a specific high aspect ratio wing structure. The optimal design procedure and lay-up definition including appropriate coupling necessary for aerospace applications has been identified by means of “ad hoc” analytical formulation and by application of commercial code. The overall equivalent bending, torsional and coupled stiffness are derived and the accuracy of the simplified beam model is demonstrated by the application of Altair Optistruct. A simple case of a coupled cantilevered beam with load at one end is introduced to demonstrate that stiffness and torsion angle distribution does not always correspond to the trends that one would intuitively expect. The maximum of torsional stiffness is not obtained with fibers arranged at 45° and, at the maximum torsional stiffness, there is no minimum rotation angle. This observation becomes essential in any design process of composite structures where the constraints impose structural couplings. Furthermore, the presented theory is also extended to cases in which it is necessary to include composite/stiffened hybrid configurations. Good agreement has been found between the theoretical simplified beam model and numerical analysis. Finally, the selected composite configuration was compared to an experimental test case. The numerical and experimental validation is presented and discussed. A good correlation was found confirming the validity of the overall optimization for the optimal lay-up selection and structural configuration.https://www.mdpi.com/2226-4310/7/8/111box-beam equivalent modeloptimal layup selectioncomposite optimization |
| spellingShingle | Enrico Cestino Giacomo Frulla Paolo Piana Renzo Duella Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal Design Aerospace box-beam equivalent model optimal layup selection composite optimization |
| title | Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal Design |
| title_full | Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal Design |
| title_fullStr | Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal Design |
| title_full_unstemmed | Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal Design |
| title_short | Numerical/Experimental Validation of Thin-Walled Composite Box Beam Optimal Design |
| title_sort | numerical experimental validation of thin walled composite box beam optimal design |
| topic | box-beam equivalent model optimal layup selection composite optimization |
| url | https://www.mdpi.com/2226-4310/7/8/111 |
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