Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory
Abstract In the present paper, an improved high-order theory is employed to study the free vibration of rotating truncated sandwich conical shells with laminated face sheets and a soft core. The formulation is based on a three-layer sandwich model. First-order shear deformation theory (FSDT) is used...
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| Format: | Article |
| Language: | English |
| Published: |
Marcílio Alves
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| Series: | Latin American Journal of Solids and Structures |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252017001202291&lng=en&tlng=en |
| _version_ | 1818939704562679808 |
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| author | Amir Shekari Faramarz Ashenai Ghasemi Keramat Malekzadehfard |
| author_facet | Amir Shekari Faramarz Ashenai Ghasemi Keramat Malekzadehfard |
| author_sort | Amir Shekari |
| collection | DOAJ |
| description | Abstract In the present paper, an improved high-order theory is employed to study the free vibration of rotating truncated sandwich conical shells with laminated face sheets and a soft core. The formulation is based on a three-layer sandwich model. First-order shear deformation theory (FSDT) is used for face sheets and quadratic and cubic functions are assumed for transverse and in-plane displacements of the core, respectively. The governing equations of motion are derived according to the Hamilton’s principle. Also, continuity conditions of the displacements at the interfaces, as well as transverse flexibility, transverse normal strain and stress of the core have been considered. Analytical solution for free vibration of simply supported sandwich conical shells is presented using Galerkin’s method. Effect of some geometrical parameters is also studied on the fundamental frequency of the sandwich shells. Comparison of the present results with those in the literature confirms the accuracy of the proposed theory. |
| first_indexed | 2024-12-20T06:27:59Z |
| format | Article |
| id | doaj.art-410a458de0f44d07a163ded289dd968a |
| institution | Directory Open Access Journal |
| issn | 1679-7825 |
| language | English |
| last_indexed | 2024-12-20T06:27:59Z |
| publisher | Marcílio Alves |
| record_format | Article |
| series | Latin American Journal of Solids and Structures |
| spelling | doaj.art-410a458de0f44d07a163ded289dd968a2022-12-21T19:50:15ZengMarcílio AlvesLatin American Journal of Solids and Structures1679-782514122291232310.1590/1679-78253977S1679-78252017001202291Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order TheoryAmir ShekariFaramarz Ashenai GhasemiKeramat MalekzadehfardAbstract In the present paper, an improved high-order theory is employed to study the free vibration of rotating truncated sandwich conical shells with laminated face sheets and a soft core. The formulation is based on a three-layer sandwich model. First-order shear deformation theory (FSDT) is used for face sheets and quadratic and cubic functions are assumed for transverse and in-plane displacements of the core, respectively. The governing equations of motion are derived according to the Hamilton’s principle. Also, continuity conditions of the displacements at the interfaces, as well as transverse flexibility, transverse normal strain and stress of the core have been considered. Analytical solution for free vibration of simply supported sandwich conical shells is presented using Galerkin’s method. Effect of some geometrical parameters is also studied on the fundamental frequency of the sandwich shells. Comparison of the present results with those in the literature confirms the accuracy of the proposed theory.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252017001202291&lng=en&tlng=enRotating conical shellhigh-order sandwich theoryfree vibration |
| spellingShingle | Amir Shekari Faramarz Ashenai Ghasemi Keramat Malekzadehfard Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory Latin American Journal of Solids and Structures Rotating conical shell high-order sandwich theory free vibration |
| title | Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory |
| title_full | Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory |
| title_fullStr | Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory |
| title_full_unstemmed | Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory |
| title_short | Free Damped Vibration of Rotating Truncated Conical Sandwich Shells Using an Improved High-Order Theory |
| title_sort | free damped vibration of rotating truncated conical sandwich shells using an improved high order theory |
| topic | Rotating conical shell high-order sandwich theory free vibration |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252017001202291&lng=en&tlng=en |
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