Stability Improvement of Flexible Shallow Shells Using Neutron Radiation
Microelectromechanical systems (MEMS) are increasingly playing a significant role in the aviation industry and space exploration. Moreover, there is a need to study the neutron radiation effect on the MEMS structural members and the MEMS devices reliability in general. Experiments with MEMS structur...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/14/3187 |
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| author | Anton V. Krysko Jan Awrejcewicz Irina V. Papkova Vadim A. Krysko |
| author_facet | Anton V. Krysko Jan Awrejcewicz Irina V. Papkova Vadim A. Krysko |
| author_sort | Anton V. Krysko |
| collection | DOAJ |
| description | Microelectromechanical systems (MEMS) are increasingly playing a significant role in the aviation industry and space exploration. Moreover, there is a need to study the neutron radiation effect on the MEMS structural members and the MEMS devices reliability in general. Experiments with MEMS structural members showed changes in their operation after exposure to neutron radiation. In this study, the neutron irradiation effect on the flexible MEMS resonators’ stability in the form of shallow rectangular shells is investigated. The theory of flexible rectangular shallow shells under the influence of both neutron irradiation and temperature field is developed. It consists of three components. First, the theory of flexible rectangular shallow shells under neutron radiation in temperature field was considered based on the Kirchhoff hypothesis and energetic Hamilton principle. Second, the theory of plasticity relaxation and cyclic loading were taken into account. Third, the Birger method of variable parameters was employed. The derived mathematical model was solved using both the finite difference method and the Bubnov–Galerkin method of higher approximations. It was established based on a few numeric examples that the irradiation direction of the MEMS structural members significantly affects the magnitude and shape of the plastic deformations’ distribution, as well as the forces magnitude in the shell middle surface, although qualitatively with the same deflection the diagrams of the main investigated functions were similar. |
| first_indexed | 2024-03-10T18:26:16Z |
| format | Article |
| id | doaj.art-7108b14dd99d4e5d9028bfab55c37698 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T18:26:16Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-7108b14dd99d4e5d9028bfab55c376982023-11-20T06:59:44ZengMDPI AGMaterials1996-19442020-07-011314318710.3390/ma13143187Stability Improvement of Flexible Shallow Shells Using Neutron RadiationAnton V. Krysko0Jan Awrejcewicz1Irina V. Papkova2Vadim A. Krysko3Department of Mathematics and Modeling Saratov State Technical University, 77 Politehnicheskaya Str., 410054 Saratov, RussiaDepartment of Automation, Biomechanics and Mechatronics, Lodz University of Technology, 1/15 Stefanowski St., 90-924 Lodz, PolandDepartment of Mathematics and Modeling Saratov State Technical University, 77 Politehnicheskaya Str., 410054 Saratov, RussiaDepartment of Mathematics and Modeling Saratov State Technical University, 77 Politehnicheskaya Str., 410054 Saratov, RussiaMicroelectromechanical systems (MEMS) are increasingly playing a significant role in the aviation industry and space exploration. Moreover, there is a need to study the neutron radiation effect on the MEMS structural members and the MEMS devices reliability in general. Experiments with MEMS structural members showed changes in their operation after exposure to neutron radiation. In this study, the neutron irradiation effect on the flexible MEMS resonators’ stability in the form of shallow rectangular shells is investigated. The theory of flexible rectangular shallow shells under the influence of both neutron irradiation and temperature field is developed. It consists of three components. First, the theory of flexible rectangular shallow shells under neutron radiation in temperature field was considered based on the Kirchhoff hypothesis and energetic Hamilton principle. Second, the theory of plasticity relaxation and cyclic loading were taken into account. Third, the Birger method of variable parameters was employed. The derived mathematical model was solved using both the finite difference method and the Bubnov–Galerkin method of higher approximations. It was established based on a few numeric examples that the irradiation direction of the MEMS structural members significantly affects the magnitude and shape of the plastic deformations’ distribution, as well as the forces magnitude in the shell middle surface, although qualitatively with the same deflection the diagrams of the main investigated functions were similar.https://www.mdpi.com/1996-1944/13/14/3187bucklingmicrostructuresstress relaxationvibration |
| spellingShingle | Anton V. Krysko Jan Awrejcewicz Irina V. Papkova Vadim A. Krysko Stability Improvement of Flexible Shallow Shells Using Neutron Radiation Materials buckling microstructures stress relaxation vibration |
| title | Stability Improvement of Flexible Shallow Shells Using Neutron Radiation |
| title_full | Stability Improvement of Flexible Shallow Shells Using Neutron Radiation |
| title_fullStr | Stability Improvement of Flexible Shallow Shells Using Neutron Radiation |
| title_full_unstemmed | Stability Improvement of Flexible Shallow Shells Using Neutron Radiation |
| title_short | Stability Improvement of Flexible Shallow Shells Using Neutron Radiation |
| title_sort | stability improvement of flexible shallow shells using neutron radiation |
| topic | buckling microstructures stress relaxation vibration |
| url | https://www.mdpi.com/1996-1944/13/14/3187 |
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