Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores
This paper dealt with free vibration analysis of thick double curved composite sandwich panels with simply supported or fully clamped boundary conditions based on a new improved higher order sandwich panel theory. The formulation used the first order shear deformation theory for composite face sheet...
| Main Authors: | , , |
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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=S1679-78252014001200010&lng=en&tlng=en |
| _version_ | 1818062248745107456 |
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| author | K. Malekzadeh Fard M. Livani Faramarz Ashenai Ghasemi |
| author_facet | K. Malekzadeh Fard M. Livani Faramarz Ashenai Ghasemi |
| author_sort | K. Malekzadeh Fard |
| collection | DOAJ |
| description | This paper dealt with free vibration analysis of thick double curved composite sandwich panels with simply supported or fully clamped boundary conditions based on a new improved higher order sandwich panel theory. The formulation used the first order shear deformation theory for composite face sheets and polynomial description for the displacement field in the core layer which was based on the displacement field of Frostig's second model. The fully dynamic effects of the core layer and face sheets were also considered in this study. Using the Hamilton's principle, the governing equations were derived. Moreover, effects of some important parameters like that of boundary conditions, thickness ratio of the core to panel, radii curvatures and composite lay-up sequences were investigated on free vibration response of the panel. The results were validated by those published in the literature and with the FE results obtained by ABAQUS software. It was shown that thicker panels with a thicker core provided greater resistance to resonant vibrations. Also, effect of increasing the core thickness in general was significant decreased fundamental natural frequency values. |
| first_indexed | 2024-12-10T14:01:12Z |
| format | Article |
| id | doaj.art-f3e2bf3b6ce34f8f9b9dd60bcc4a276e |
| institution | Directory Open Access Journal |
| issn | 1679-7825 |
| language | English |
| last_indexed | 2024-12-10T14:01:12Z |
| publisher | Marcílio Alves |
| record_format | Article |
| series | Latin American Journal of Solids and Structures |
| spelling | doaj.art-f3e2bf3b6ce34f8f9b9dd60bcc4a276e2022-12-22T01:45:48ZengMarcílio AlvesLatin American Journal of Solids and Structures1679-782511122284230710.1590/S1679-78252014001200010S1679-78252014001200010Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible coresK. Malekzadeh Fard0M. Livani1Faramarz Ashenai Ghasemi2Malek Ashtar University of TechnologyMalek Ashtar University of TechnologyShahid Rajaee Teacher Training UniversityThis paper dealt with free vibration analysis of thick double curved composite sandwich panels with simply supported or fully clamped boundary conditions based on a new improved higher order sandwich panel theory. The formulation used the first order shear deformation theory for composite face sheets and polynomial description for the displacement field in the core layer which was based on the displacement field of Frostig's second model. The fully dynamic effects of the core layer and face sheets were also considered in this study. Using the Hamilton's principle, the governing equations were derived. Moreover, effects of some important parameters like that of boundary conditions, thickness ratio of the core to panel, radii curvatures and composite lay-up sequences were investigated on free vibration response of the panel. The results were validated by those published in the literature and with the FE results obtained by ABAQUS software. It was shown that thicker panels with a thicker core provided greater resistance to resonant vibrations. Also, effect of increasing the core thickness in general was significant decreased fundamental natural frequency values.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252014001200010&lng=en&tlng=enFree vibrationDouble curved sandwich panelBoundaryconditionsImproved higher order sandwich panel theory |
| spellingShingle | K. Malekzadeh Fard M. Livani Faramarz Ashenai Ghasemi Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores Latin American Journal of Solids and Structures Free vibration Double curved sandwich panel Boundaryconditions Improved higher order sandwich panel theory |
| title | Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores |
| title_full | Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores |
| title_fullStr | Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores |
| title_full_unstemmed | Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores |
| title_short | Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores |
| title_sort | improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores |
| topic | Free vibration Double curved sandwich panel Boundaryconditions Improved higher order sandwich panel theory |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252014001200010&lng=en&tlng=en |
| work_keys_str_mv | AT kmalekzadehfard improvedhighorderfreevibrationanalysisofthickdoublecurvedsandwichpanelswithtransverselyflexiblecores AT mlivani improvedhighorderfreevibrationanalysisofthickdoublecurvedsandwichpanelswithtransverselyflexiblecores AT faramarzashenaighasemi improvedhighorderfreevibrationanalysisofthickdoublecurvedsandwichpanelswithtransverselyflexiblecores |