Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling
Isogrid structures are a configuration of stiffeners of different sections, which make up a lattice placed on thin plates, with the aim of increasing the buckling factor of the overall structure. Because of the major benefits of isogrid structures when applied to increase the buckling factor and to...
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| Format: | Article |
| Language: | English |
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National Institute for Aerospace Research “Elie Carafoli” - INCAS
2018-09-01
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| Series: | INCAS Bulletin |
| Subjects: | |
| Online Access: | http://bulletin.incas.ro/files/hothazie__munteanu__nastase__bibere__vol_10_iss_3.pdf |
| _version_ | 1811332713447161856 |
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| author | Stefan HOTHAZIE Camelia MUNTEANU Mihaela NASTASE Radu BIBIRE |
| author_facet | Stefan HOTHAZIE Camelia MUNTEANU Mihaela NASTASE Radu BIBIRE |
| author_sort | Stefan HOTHAZIE |
| collection | DOAJ |
| description | Isogrid structures are a configuration of stiffeners of different sections, which make up a lattice placed on thin plates, with the aim of increasing the buckling factor of the overall structure. Because of the major benefits of isogrid structures when applied to increase the buckling factor and to decrease the mass of the structures the isogrid is placed on, its use has intensified until it has become a complete design technique for building cylindrical vessels under high compressive forces. Unfortunately, the detailed geometry of isogrid structures cannot be easily modelled or computed using FEM software, due to the high number of elements required to reliably mesh such a structure and the large amount of time taken to compute the results. This paper attempts to mitigate this problem by considering an analytical approach of sectioning the cylindrical vessel into component modules. These modules, consisting of a thin plate with isogrid stiffeners attached to it, are approximated as an overall thin plate with modified properties. The analytical algorithm is then implemented in a computed algebra system, which will quickly compute approximate values for the buckling factor and mass of the structure. |
| first_indexed | 2024-04-13T16:41:02Z |
| format | Article |
| id | doaj.art-aede4f71a326485bafd2a131c0f36e6d |
| institution | Directory Open Access Journal |
| issn | 2066-8201 2247-4528 |
| language | English |
| last_indexed | 2024-04-13T16:41:02Z |
| publishDate | 2018-09-01 |
| publisher | National Institute for Aerospace Research “Elie Carafoli” - INCAS |
| record_format | Article |
| series | INCAS Bulletin |
| spelling | doaj.art-aede4f71a326485bafd2a131c0f36e6d2022-12-22T02:39:14ZengNational Institute for Aerospace Research “Elie Carafoli” - INCASINCAS Bulletin2066-82012247-45282018-09-011038910110.13111/2066-8201.2018.10.3.8Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric bucklingStefan HOTHAZIE0Camelia MUNTEANU1Mihaela NASTASE2Radu BIBIRE3INCAS – National Institute for Aerospace Research “Elie Carafoli”, B-dul Iuliu Maniu 220, Bucharest 061126, Romania, hothazie.stefan@incas.ro*INCAS – National Institute for Aerospace Research “Elie Carafoli”, B-dul Iuliu Maniu 220, Bucharest 061126, Romania, munteanu.camelia@incas.roINCAS – National Institute for Aerospace Research “Elie Carafoli”, B-dul Iuliu Maniu 220, Bucharest 061126, Romania, nastase.mihaela@incas.roINCAS – National Institute for Aerospace Research “Elie Carafoli”, B-dul Iuliu Maniu 220, Bucharest 061126, Romania, radu.bibire@incas.roIsogrid structures are a configuration of stiffeners of different sections, which make up a lattice placed on thin plates, with the aim of increasing the buckling factor of the overall structure. Because of the major benefits of isogrid structures when applied to increase the buckling factor and to decrease the mass of the structures the isogrid is placed on, its use has intensified until it has become a complete design technique for building cylindrical vessels under high compressive forces. Unfortunately, the detailed geometry of isogrid structures cannot be easily modelled or computed using FEM software, due to the high number of elements required to reliably mesh such a structure and the large amount of time taken to compute the results. This paper attempts to mitigate this problem by considering an analytical approach of sectioning the cylindrical vessel into component modules. These modules, consisting of a thin plate with isogrid stiffeners attached to it, are approximated as an overall thin plate with modified properties. The analytical algorithm is then implemented in a computed algebra system, which will quickly compute approximate values for the buckling factor and mass of the structure.http://bulletin.incas.ro/files/hothazie__munteanu__nastase__bibere__vol_10_iss_3.pdfisogridnumerical applicationsstiffenerbucklingtotal masscylindrical vessels |
| spellingShingle | Stefan HOTHAZIE Camelia MUNTEANU Mihaela NASTASE Radu BIBIRE Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling INCAS Bulletin isogrid numerical applications stiffener buckling total mass cylindrical vessels |
| title | Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling |
| title_full | Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling |
| title_fullStr | Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling |
| title_full_unstemmed | Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling |
| title_short | Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling |
| title_sort | analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling |
| topic | isogrid numerical applications stiffener buckling total mass cylindrical vessels |
| url | http://bulletin.incas.ro/files/hothazie__munteanu__nastase__bibere__vol_10_iss_3.pdf |
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