Analysis and testing of temperature adaptability of large-scale body-mounted radiator
This paper addresses the issue of thermal stress release in large-scale body-mounted radiator for China space station telescope under extreme temperature differences of 80 °C. To address this challenge, an innovative floating combined stress release support mechanism is proposed. Initially, the stre...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24015077 |
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| author | Xingxing Huang Shuncheng Zhang Kang Han Zhenyu Lu Liang Guo Ming Sun |
| author_facet | Xingxing Huang Shuncheng Zhang Kang Han Zhenyu Lu Liang Guo Ming Sun |
| author_sort | Xingxing Huang |
| collection | DOAJ |
| description | This paper addresses the issue of thermal stress release in large-scale body-mounted radiator for China space station telescope under extreme temperature differences of 80 °C. To address this challenge, an innovative floating combined stress release support mechanism is proposed. Initially, the stress release mechanism for the radiator is designed with an “orthogonal + parallel” layout based on key factors such as radiator size, operating conditions, and thermal stress. Subsequently, through this layout design, specific modeling is conducted for the fixed support point, line-degree-of-freedom release mechanism, and plane-degree-of-freedom release mechanism of the stress release support mechanism. Utilizing elastic mechanics theory, the deformation of the radiator cooling panel is determined to be 2.51 mm, leading to the design of a support mechanism with a release capacity of 5 mm. Finally, the effectiveness of the design is verified through finite element simulation analysis and experimental validation. Thermal-elastic simulation analysis reveals that the strain of the radiator cooling panel under an 80 °C temperature load is 2.75 mm, representing an error of 8 % compared to the theoretical calculation. The maximum stress of 315 MPa in the radiator cooling panel and 873 MPa in the support mechanism are less than the yield strength of the respective materials. Experimental results indicate that during a temperature change of 30 °C, the lateral deformation of the radiator is 0.85 mm, differing by 17.48 % from the simulation analysis result of 1.03 mm for a ΔT of 30 °C. These errors fall within an acceptable range and meet the design requirements. The results strongly confirm that the designed stress release support mechanism can effectively release thermal stress in large-scale body-mounted radiator while ensuring that the deformation of the radiator remains within the safe range of the sliding distance of the stress release support mechanism. |
| format | Article |
| id | doaj-art-7aa4457267914ef9b4f47bd065f4937d |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-7aa4457267914ef9b4f47bd065f4937d2024-12-07T08:26:43ZengElsevierCase Studies in Thermal Engineering2214-157X2024-12-0164105476Analysis and testing of temperature adaptability of large-scale body-mounted radiatorXingxing Huang0Shuncheng Zhang1Kang Han2Zhenyu Lu3Liang Guo4Ming Sun5Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, China; University of Chinese Academy of Sciences, Beijing, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, China; Corresponding author.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, China; Corresponding author.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, ChinaThis paper addresses the issue of thermal stress release in large-scale body-mounted radiator for China space station telescope under extreme temperature differences of 80 °C. To address this challenge, an innovative floating combined stress release support mechanism is proposed. Initially, the stress release mechanism for the radiator is designed with an “orthogonal + parallel” layout based on key factors such as radiator size, operating conditions, and thermal stress. Subsequently, through this layout design, specific modeling is conducted for the fixed support point, line-degree-of-freedom release mechanism, and plane-degree-of-freedom release mechanism of the stress release support mechanism. Utilizing elastic mechanics theory, the deformation of the radiator cooling panel is determined to be 2.51 mm, leading to the design of a support mechanism with a release capacity of 5 mm. Finally, the effectiveness of the design is verified through finite element simulation analysis and experimental validation. Thermal-elastic simulation analysis reveals that the strain of the radiator cooling panel under an 80 °C temperature load is 2.75 mm, representing an error of 8 % compared to the theoretical calculation. The maximum stress of 315 MPa in the radiator cooling panel and 873 MPa in the support mechanism are less than the yield strength of the respective materials. Experimental results indicate that during a temperature change of 30 °C, the lateral deformation of the radiator is 0.85 mm, differing by 17.48 % from the simulation analysis result of 1.03 mm for a ΔT of 30 °C. These errors fall within an acceptable range and meet the design requirements. The results strongly confirm that the designed stress release support mechanism can effectively release thermal stress in large-scale body-mounted radiator while ensuring that the deformation of the radiator remains within the safe range of the sliding distance of the stress release support mechanism.http://www.sciencedirect.com/science/article/pii/S2214157X24015077China space station telescopeLarge-scale body-mounted radiatorStress release support mechanismFinite element simulation analysisThermal strain test |
| spellingShingle | Xingxing Huang Shuncheng Zhang Kang Han Zhenyu Lu Liang Guo Ming Sun Analysis and testing of temperature adaptability of large-scale body-mounted radiator Case Studies in Thermal Engineering China space station telescope Large-scale body-mounted radiator Stress release support mechanism Finite element simulation analysis Thermal strain test |
| title | Analysis and testing of temperature adaptability of large-scale body-mounted radiator |
| title_full | Analysis and testing of temperature adaptability of large-scale body-mounted radiator |
| title_fullStr | Analysis and testing of temperature adaptability of large-scale body-mounted radiator |
| title_full_unstemmed | Analysis and testing of temperature adaptability of large-scale body-mounted radiator |
| title_short | Analysis and testing of temperature adaptability of large-scale body-mounted radiator |
| title_sort | analysis and testing of temperature adaptability of large scale body mounted radiator |
| topic | China space station telescope Large-scale body-mounted radiator Stress release support mechanism Finite element simulation analysis Thermal strain test |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24015077 |
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