Topology optimization of a ratchet compensation structure subject to periodic constraints
The railway pantograph-catenary system employs a ratchet compensation device to sustain the tension of the contact wire. However, the excessive weight associated with the ratchet structure adversely affects the performance of the compensation device. An optimization design aimed at lightweight optim...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-12-01
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| Series: | High-Speed Railway |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949867824000746 |
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| _version_ | 1846107548613083136 |
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| author | Taining Qi Tao Yan Shiju Song Yu Zhu Geng Chen |
| author_facet | Taining Qi Tao Yan Shiju Song Yu Zhu Geng Chen |
| author_sort | Taining Qi |
| collection | DOAJ |
| description | The railway pantograph-catenary system employs a ratchet compensation device to sustain the tension of the contact wire. However, the excessive weight associated with the ratchet structure adversely affects the performance of the compensation device. An optimization design aimed at lightweight optimization of the ratchet wheel structure can enhance the system’s agility, improve material utilization, and reduce costs. This study uses a finite element model to establish an equivalent load model for the ratchet under service conditions and analyzes its load-bearing state. An optimization model was created and solved using ANSYS Workbench. The topological optimization configurations were compared under unconstrained conditions and four different periodic constraint scenarios. Following this, the structure was redesigned based on the topological optimization results, and a simulation analysis was conducted to compare the reconstructed model with the original model. The comparison results indicate that the masses of all four optimized models have been reduced by more than 10 %. Additionally, under conditions of a fully wound compensation rope, the maximum stress has decreased by over 20 %, leading to a more uniform stress distribution and improved overall performance. The topology optimization and redesign method based on periodic constraints offers a viable engineering solution for the lightweight design of the ratchet structure. |
| format | Article |
| id | doaj-art-2c8f324619b64b3f91a647f33e6f6e0d |
| institution | Kabale University |
| issn | 2949-8678 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | High-Speed Railway |
| spelling | doaj-art-2c8f324619b64b3f91a647f33e6f6e0d2024-12-26T08:58:18ZengKeAi Communications Co., Ltd.High-Speed Railway2949-86782024-12-0124230240Topology optimization of a ratchet compensation structure subject to periodic constraintsTaining Qi0Tao Yan1Shiju Song2Yu Zhu3Geng Chen4School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, ChinaBaoji Bao De Li Electrification Equipment Limited Liability Company, Baoji 721000, ChinaSchool of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China; National International Science and Technology Cooperation Base on Railway Vehicle Operation Engineering, Beijing Jiaotong University, Beijing 100044, China; Corresponding author.School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China; National International Science and Technology Cooperation Base on Railway Vehicle Operation Engineering, Beijing Jiaotong University, Beijing 100044, ChinaThe railway pantograph-catenary system employs a ratchet compensation device to sustain the tension of the contact wire. However, the excessive weight associated with the ratchet structure adversely affects the performance of the compensation device. An optimization design aimed at lightweight optimization of the ratchet wheel structure can enhance the system’s agility, improve material utilization, and reduce costs. This study uses a finite element model to establish an equivalent load model for the ratchet under service conditions and analyzes its load-bearing state. An optimization model was created and solved using ANSYS Workbench. The topological optimization configurations were compared under unconstrained conditions and four different periodic constraint scenarios. Following this, the structure was redesigned based on the topological optimization results, and a simulation analysis was conducted to compare the reconstructed model with the original model. The comparison results indicate that the masses of all four optimized models have been reduced by more than 10 %. Additionally, under conditions of a fully wound compensation rope, the maximum stress has decreased by over 20 %, leading to a more uniform stress distribution and improved overall performance. The topology optimization and redesign method based on periodic constraints offers a viable engineering solution for the lightweight design of the ratchet structure.http://www.sciencedirect.com/science/article/pii/S2949867824000746Topology optimizationSIMP density-based methodRatchet compensation deviceANSYS Workbench |
| spellingShingle | Taining Qi Tao Yan Shiju Song Yu Zhu Geng Chen Topology optimization of a ratchet compensation structure subject to periodic constraints High-Speed Railway Topology optimization SIMP density-based method Ratchet compensation device ANSYS Workbench |
| title | Topology optimization of a ratchet compensation structure subject to periodic constraints |
| title_full | Topology optimization of a ratchet compensation structure subject to periodic constraints |
| title_fullStr | Topology optimization of a ratchet compensation structure subject to periodic constraints |
| title_full_unstemmed | Topology optimization of a ratchet compensation structure subject to periodic constraints |
| title_short | Topology optimization of a ratchet compensation structure subject to periodic constraints |
| title_sort | topology optimization of a ratchet compensation structure subject to periodic constraints |
| topic | Topology optimization SIMP density-based method Ratchet compensation device ANSYS Workbench |
| url | http://www.sciencedirect.com/science/article/pii/S2949867824000746 |
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