Frequency optimization of laminated composite spherical shells
This paper deals with frequency optimization of symmetrically laminated angle-ply spherical shells. The design objective is the maximization of the fundamental frequency, and the design variable is the fiber orientation in the layers. The first-order shear deformation theory and nine-node isoparamet...
| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2012-12-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2012-0026 |
| _version_ | 1819019211871092736 |
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| author | Topal Umut |
| author_facet | Topal Umut |
| author_sort | Topal Umut |
| collection | DOAJ |
| description | This paper deals with frequency optimization of symmetrically laminated angle-ply spherical shells. The design objective is the maximization of the fundamental frequency, and the design variable is the fiber orientation in the layers. The first-order shear deformation theory and nine-node isoparametric finite element model are used for the finite element solution of the laminates. The modified feasible direction (MFD) method is used for the optimization routine. For this purpose, a program based on FORTRAN is used. Finally, the numerical analysis is carried out to investigate the effects of geometrical parameters and boundary conditions on the optimal designs, and the results are compared. |
| first_indexed | 2024-12-21T03:31:43Z |
| format | Article |
| id | doaj.art-9953d67a67f84b49bbbb4121d82efd08 |
| institution | Directory Open Access Journal |
| issn | 0792-1233 2191-0359 |
| language | English |
| last_indexed | 2024-12-21T03:31:43Z |
| publishDate | 2012-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-9953d67a67f84b49bbbb4121d82efd082022-12-21T19:17:27ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592012-12-0119438138610.1515/secm-2012-0026Frequency optimization of laminated composite spherical shellsTopal Umut0Faculty of Technology, Department of Civil Engineering, Karadeniz Technical University, Trabzon, TurkeyThis paper deals with frequency optimization of symmetrically laminated angle-ply spherical shells. The design objective is the maximization of the fundamental frequency, and the design variable is the fiber orientation in the layers. The first-order shear deformation theory and nine-node isoparametric finite element model are used for the finite element solution of the laminates. The modified feasible direction (MFD) method is used for the optimization routine. For this purpose, a program based on FORTRAN is used. Finally, the numerical analysis is carried out to investigate the effects of geometrical parameters and boundary conditions on the optimal designs, and the results are compared.https://doi.org/10.1515/secm-2012-0026fundamental frequencylaminated spherical shellsmodified feasible direction methodoptimization |
| spellingShingle | Topal Umut Frequency optimization of laminated composite spherical shells Science and Engineering of Composite Materials fundamental frequency laminated spherical shells modified feasible direction method optimization |
| title | Frequency optimization of laminated composite spherical shells |
| title_full | Frequency optimization of laminated composite spherical shells |
| title_fullStr | Frequency optimization of laminated composite spherical shells |
| title_full_unstemmed | Frequency optimization of laminated composite spherical shells |
| title_short | Frequency optimization of laminated composite spherical shells |
| title_sort | frequency optimization of laminated composite spherical shells |
| topic | fundamental frequency laminated spherical shells modified feasible direction method optimization |
| url | https://doi.org/10.1515/secm-2012-0026 |
| work_keys_str_mv | AT topalumut frequencyoptimizationoflaminatedcompositesphericalshells |