Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models
To achieve multi-frequency vibration suppression and wave propagation modulation, eight branching ligament structures for wind models are proposed. Using lattice theory, dynamical model and finite element release method, the structures are verified to have multi-frequency bandgaps. By attaching a so...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379723001389 |
| _version_ | 1797852013863632896 |
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| author | Xiao-feng Li Shu-liang Cheng Hong-yun Yang Qun Yan Bin Wang Yong-tao Sun Qian Ding Hao Yan Hong-ge Han Qing-xin Zhao Ya-jun Xin |
| author_facet | Xiao-feng Li Shu-liang Cheng Hong-yun Yang Qun Yan Bin Wang Yong-tao Sun Qian Ding Hao Yan Hong-ge Han Qing-xin Zhao Ya-jun Xin |
| author_sort | Xiao-feng Li |
| collection | DOAJ |
| description | To achieve multi-frequency vibration suppression and wave propagation modulation, eight branching ligament structures for wind models are proposed. Using lattice theory, dynamical model and finite element release method, the structures are verified to have multi-frequency bandgaps. By attaching a solid disc at the center of the model, the bandgap coverage of the structure is improved and the bandgap frequency is reduced. The modal analysis shows that the vibration of branch ligaments and border ligaments has a suppression effect on elastic waves. The phase constant surface, phase velocity and wave propagation direction plots at specific frequencies are calculated to verify the directional and regional nature of wave propagation. And the good correspondence of group velocity and wave propagation finite element simulation results at specific frequencies. Finally, the calculated bandgap frequency range is compared with the vibration transfer function, and the two agree well. And the stress cloud diagram also shows that the optimized structure has an excellent vibration suppression capability. The innovatively designed structure has the combined advantages of light weight, ease of fabrication, wide frequency and low frequency vibration control, while the integrated in-plane wave analysis provides the theoretical basis for structural optimization. |
| first_indexed | 2024-04-09T19:26:05Z |
| format | Article |
| id | doaj.art-e4232b17f3a9486988108f05bbac5a40 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-09T19:26:05Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-e4232b17f3a9486988108f05bbac5a402023-04-05T08:12:22ZengElsevierResults in Physics2211-37972023-04-0147106345Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind modelsXiao-feng Li0Shu-liang Cheng1Hong-yun Yang2Qun Yan3Bin Wang4Yong-tao Sun5Qian Ding6Hao Yan7Hong-ge Han8Qing-xin Zhao9Ya-jun Xin10State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China; Hebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structure, Yanshan University, Qinhuangdao, China; Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste, Yanshan University, Qinhuangdao, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China; Hebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structure, Yanshan University, Qinhuangdao, ChinaHebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structure, Yanshan University, Qinhuangdao, ChinaKey Laboratory of Aeroacoustics and Dynamics, Aircraft Strength Research Institute, Xi’an, ChinaTianjin Key Laboratory of Soft Soils and Engineering Environment, Tianjin Chengjian University, Tianjin, ChinaDepartment of Mechanics and Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin University, Tianjin, China; Corresponding authors at: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China (Y.J. Xin).Department of Mechanics and Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin University, Tianjin, ChinaKey Laboratory of Aeroacoustics and Dynamics, Aircraft Strength Research Institute, Xi’an, ChinaDepartment of Mechanics and Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin University, Tianjin, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China; Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste, Yanshan University, Qinhuangdao, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China; Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste, Yanshan University, Qinhuangdao, China; Corresponding authors at: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China (Y.J. Xin).To achieve multi-frequency vibration suppression and wave propagation modulation, eight branching ligament structures for wind models are proposed. Using lattice theory, dynamical model and finite element release method, the structures are verified to have multi-frequency bandgaps. By attaching a solid disc at the center of the model, the bandgap coverage of the structure is improved and the bandgap frequency is reduced. The modal analysis shows that the vibration of branch ligaments and border ligaments has a suppression effect on elastic waves. The phase constant surface, phase velocity and wave propagation direction plots at specific frequencies are calculated to verify the directional and regional nature of wave propagation. And the good correspondence of group velocity and wave propagation finite element simulation results at specific frequencies. Finally, the calculated bandgap frequency range is compared with the vibration transfer function, and the two agree well. And the stress cloud diagram also shows that the optimized structure has an excellent vibration suppression capability. The innovatively designed structure has the combined advantages of light weight, ease of fabrication, wide frequency and low frequency vibration control, while the integrated in-plane wave analysis provides the theoretical basis for structural optimization.http://www.sciencedirect.com/science/article/pii/S2211379723001389Vibration attenuationWave propagationAcoustic metamaterialsGroup velocityStress fraction |
| spellingShingle | Xiao-feng Li Shu-liang Cheng Hong-yun Yang Qun Yan Bin Wang Yong-tao Sun Qian Ding Hao Yan Hong-ge Han Qing-xin Zhao Ya-jun Xin Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models Results in Physics Vibration attenuation Wave propagation Acoustic metamaterials Group velocity Stress fraction |
| title | Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models |
| title_full | Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models |
| title_fullStr | Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models |
| title_full_unstemmed | Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models |
| title_short | Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models |
| title_sort | optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models |
| topic | Vibration attenuation Wave propagation Acoustic metamaterials Group velocity Stress fraction |
| url | http://www.sciencedirect.com/science/article/pii/S2211379723001389 |
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