Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure Environment
The reentry vehicle is in an unconstrained free-flight state during the reentry process. The pressure of air fluctuations acts on the external surface of the vehicle and induces a random vibration environment with a wide-frequency range, which makes great influences on the structural dynamic propert...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/6864973 |
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| _version_ | 1832561543089225728 |
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| author | Xuanhua Fan Jun Liang Keying Wang Huan Zhou |
| author_facet | Xuanhua Fan Jun Liang Keying Wang Huan Zhou |
| author_sort | Xuanhua Fan |
| collection | DOAJ |
| description | The reentry vehicle is in an unconstrained free-flight state during the reentry process. The pressure of air fluctuations acts on the external surface of the vehicle and induces a random vibration environment with a wide-frequency range, which makes great influences on the structural dynamic properties of vehicles. This paper aims at the parallel calculation of the wide-frequency random vibration problems for the free body under multipoint fluctuating pressure loads. The calculation method is based on the self-developed JAUMIN framework and PANDA platform. The novel algorithm based on the modal superposition method reduces the computational complexity, realizes the parallel calculation, and achieves the maximum numerical simulation calculation capacity of 1.045 billion degrees of freedom (DOFs) while improving the calculation efficiency and the accuracy of the results. Finally, this article also uses typical examples to verify the correctness and parallel scalability of algorithms and programs. |
| format | Article |
| id | doaj-art-09ebb1777e674285a578b64f332013f5 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-09ebb1777e674285a578b64f332013f52025-02-03T01:24:44ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/68649736864973Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure EnvironmentXuanhua Fan0Jun Liang1Keying Wang2Huan Zhou3Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaThe reentry vehicle is in an unconstrained free-flight state during the reentry process. The pressure of air fluctuations acts on the external surface of the vehicle and induces a random vibration environment with a wide-frequency range, which makes great influences on the structural dynamic properties of vehicles. This paper aims at the parallel calculation of the wide-frequency random vibration problems for the free body under multipoint fluctuating pressure loads. The calculation method is based on the self-developed JAUMIN framework and PANDA platform. The novel algorithm based on the modal superposition method reduces the computational complexity, realizes the parallel calculation, and achieves the maximum numerical simulation calculation capacity of 1.045 billion degrees of freedom (DOFs) while improving the calculation efficiency and the accuracy of the results. Finally, this article also uses typical examples to verify the correctness and parallel scalability of algorithms and programs.http://dx.doi.org/10.1155/2021/6864973 |
| spellingShingle | Xuanhua Fan Jun Liang Keying Wang Huan Zhou Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure Environment Shock and Vibration |
| title | Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure Environment |
| title_full | Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure Environment |
| title_fullStr | Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure Environment |
| title_full_unstemmed | Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure Environment |
| title_short | Parallel Calculation of Random Vibration for Reentry Vehicles in Fluctuating Pressure Environment |
| title_sort | parallel calculation of random vibration for reentry vehicles in fluctuating pressure environment |
| url | http://dx.doi.org/10.1155/2021/6864973 |
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