Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devices
ABSTRACT: Magneto-mechanical coupling vibration arises in the in-vessel components of Tokamak devices especially during the plasma disruption. Strong electromagnetic forces cause the structures to vibrate while the motion in turn changes the distribution of the electromagnetic field. To ensure the T...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-05-01
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| Series: | Theoretical and Applied Mechanics Letters |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095034919300315 |
| _version_ | 1818853711575777280 |
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| author | Xudong Li Shejuan Xie Cuixiang Pei Zhenmao Chen |
| author_facet | Xudong Li Shejuan Xie Cuixiang Pei Zhenmao Chen |
| author_sort | Xudong Li |
| collection | DOAJ |
| description | ABSTRACT: Magneto-mechanical coupling vibration arises in the in-vessel components of Tokamak devices especially during the plasma disruption. Strong electromagnetic forces cause the structures to vibrate while the motion in turn changes the distribution of the electromagnetic field. To ensure the Tokamak devices operating in a designed state, numerical analysis on the coupling vibration is of great importance. This paper introduces two numerical methods for the magneto-mechanical coupling problems. The coupling term of velocity and magnetic flux density is manipulated in both Eulerian and Lagrangian description, which brings much simplification in numerical implementation. Corresponding numerical codes have been developed and applied to the dynamic simulation of a test module in J-TEXT and the vacuum vessel of HL-2M during plasma disruptions. The results reveal the evident influence of the magnetic stiffness and magnetic damping effects on the vibration behavior of the in-vessel structures. Finally, to deal with the halo current injection problem, a numerical scheme is described and validated which can simulate the distribution of the halo current without complicated manipulations. Keywords: Magneto-mechanical coupling analysis, In-vessel component, Plasma disruption, Halo current, Numerical simulation |
| first_indexed | 2024-12-19T07:41:10Z |
| format | Article |
| id | doaj.art-0f56d26dbc5649baa652612c614bfb50 |
| institution | Directory Open Access Journal |
| issn | 2095-0349 |
| language | English |
| last_indexed | 2024-12-19T07:41:10Z |
| publishDate | 2019-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Theoretical and Applied Mechanics Letters |
| spelling | doaj.art-0f56d26dbc5649baa652612c614bfb502022-12-21T20:30:27ZengElsevierTheoretical and Applied Mechanics Letters2095-03492019-05-0193173179Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devicesXudong Li0Shejuan Xie1Cuixiang Pei2Zhenmao Chen3Shaanxi Engineering Research Center of NDT and Structural Integrity Evaluation, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, ChinaShaanxi Engineering Research Center of NDT and Structural Integrity Evaluation, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, ChinaShaanxi Engineering Research Center of NDT and Structural Integrity Evaluation, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, ChinaCorresponding author.; Shaanxi Engineering Research Center of NDT and Structural Integrity Evaluation, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, ChinaABSTRACT: Magneto-mechanical coupling vibration arises in the in-vessel components of Tokamak devices especially during the plasma disruption. Strong electromagnetic forces cause the structures to vibrate while the motion in turn changes the distribution of the electromagnetic field. To ensure the Tokamak devices operating in a designed state, numerical analysis on the coupling vibration is of great importance. This paper introduces two numerical methods for the magneto-mechanical coupling problems. The coupling term of velocity and magnetic flux density is manipulated in both Eulerian and Lagrangian description, which brings much simplification in numerical implementation. Corresponding numerical codes have been developed and applied to the dynamic simulation of a test module in J-TEXT and the vacuum vessel of HL-2M during plasma disruptions. The results reveal the evident influence of the magnetic stiffness and magnetic damping effects on the vibration behavior of the in-vessel structures. Finally, to deal with the halo current injection problem, a numerical scheme is described and validated which can simulate the distribution of the halo current without complicated manipulations. Keywords: Magneto-mechanical coupling analysis, In-vessel component, Plasma disruption, Halo current, Numerical simulationhttp://www.sciencedirect.com/science/article/pii/S2095034919300315 |
| spellingShingle | Xudong Li Shejuan Xie Cuixiang Pei Zhenmao Chen Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devices Theoretical and Applied Mechanics Letters |
| title | Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devices |
| title_full | Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devices |
| title_fullStr | Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devices |
| title_full_unstemmed | Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devices |
| title_short | Numerical methods for the magneto-mechanical coupling analysis of in-vessel components in Tokamak devices |
| title_sort | numerical methods for the magneto mechanical coupling analysis of in vessel components in tokamak devices |
| url | http://www.sciencedirect.com/science/article/pii/S2095034919300315 |
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