Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing rings
Purpose – The brake pipe system was an essential braking component of the railway freight trains, but the existing E-type sealing rings had problems such as insufficient low-temperature resistance, poor heat stability and short service life. To address these issues, low-phenyl silicone rubber was pr...
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| Format: | Article |
| Language: | English |
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Emerald Publishing
2025-02-01
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| Series: | Railway Sciences |
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| Online Access: | https://www.emerald.com/insight/content/doi/10.1108/RS-11-2024-0047/full/pdf |
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| author | Ming Gao Dongkai Li Kun Liu Shuliang Xu Feng Zhao Ben Guo Anhui Pan Xiao Xie Huanre Han |
| author_facet | Ming Gao Dongkai Li Kun Liu Shuliang Xu Feng Zhao Ben Guo Anhui Pan Xiao Xie Huanre Han |
| author_sort | Ming Gao |
| collection | DOAJ |
| description | Purpose – The brake pipe system was an essential braking component of the railway freight trains, but the existing E-type sealing rings had problems such as insufficient low-temperature resistance, poor heat stability and short service life. To address these issues, low-phenyl silicone rubber was prepared and tested, and the finite element analysis and experimental studies on the sealing performance of its sealing rings were carried out. Design/methodology/approach – The low-temperature resistance and thermal stability of the prepared low-phenyl silicone rubber were studied using low-temperature tensile testing, differential scanning calorimetry, dynamic thermomechanical analysis and thermogravimetric analysis. The sealing performance of the low-phenyl silicone rubber sealing ring was studied by using finite element analysis software abaqus and experiments. Findings – The prepared low-phenyl silicone rubber sealing ring possessed excellent low-temperature resistance and thermal stability. According to the finite element analysis results, the finish of the flange sealing surface and groove outer edge should be ensured, and extrusion damage should be avoided. The sealing rings were more susceptible to damage in high compression ratio and/or low-temperature environments. When the sealing effect was ensured, a small compression ratio should be selected, and rubbers with hardness and elasticity less affected by temperature should be selected. The prepared low-phenyl silicone rubber sealing ring had zero leakage at both room temperature (RT) and −50 °C. Originality/value – The innovation of this study is that it provides valuable data and experience for the future development of the sealing rings used in the brake pipe flange joints of the railway freight cars in China. |
| format | Article |
| id | doaj-art-44fb6ee6d25d48dd9f1a96080db0d3d2 |
| institution | Kabale University |
| issn | 2755-0907 2755-0915 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Emerald Publishing |
| record_format | Article |
| series | Railway Sciences |
| spelling | doaj-art-44fb6ee6d25d48dd9f1a96080db0d3d22025-02-05T07:11:01ZengEmerald PublishingRailway Sciences2755-09072755-09152025-02-014112313710.1108/RS-11-2024-0047Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing ringsMing Gao0Dongkai Li1Kun Liu2Shuliang Xu3Feng Zhao4Ben Guo5Anhui Pan6Xiao Xie7Huanre Han8Metals and Chemistry Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, ChinaDepartment of Locomotive and Car, China State Railway Group Company Limited, Beijing, ChinaDepartment of Locomotive and Car, China State Railway Group Company Limited, Beijing, ChinaRolling Stock Department, China Railway Harbin Group Company Limited, Harbin, ChinaRolling Stock Department, China Railway Harbin Group Company Limited, Harbin, ChinaMetals and Chemistry Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, ChinaMetals and Chemistry Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, ChinaMetals and Chemistry Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, ChinaMetals and Chemistry Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, ChinaPurpose – The brake pipe system was an essential braking component of the railway freight trains, but the existing E-type sealing rings had problems such as insufficient low-temperature resistance, poor heat stability and short service life. To address these issues, low-phenyl silicone rubber was prepared and tested, and the finite element analysis and experimental studies on the sealing performance of its sealing rings were carried out. Design/methodology/approach – The low-temperature resistance and thermal stability of the prepared low-phenyl silicone rubber were studied using low-temperature tensile testing, differential scanning calorimetry, dynamic thermomechanical analysis and thermogravimetric analysis. The sealing performance of the low-phenyl silicone rubber sealing ring was studied by using finite element analysis software abaqus and experiments. Findings – The prepared low-phenyl silicone rubber sealing ring possessed excellent low-temperature resistance and thermal stability. According to the finite element analysis results, the finish of the flange sealing surface and groove outer edge should be ensured, and extrusion damage should be avoided. The sealing rings were more susceptible to damage in high compression ratio and/or low-temperature environments. When the sealing effect was ensured, a small compression ratio should be selected, and rubbers with hardness and elasticity less affected by temperature should be selected. The prepared low-phenyl silicone rubber sealing ring had zero leakage at both room temperature (RT) and −50 °C. Originality/value – The innovation of this study is that it provides valuable data and experience for the future development of the sealing rings used in the brake pipe flange joints of the railway freight cars in China.https://www.emerald.com/insight/content/doi/10.1108/RS-11-2024-0047/full/pdfLow-phenyl silicone rubberSealing ringSealing performanceFinite element analysisLeakage |
| spellingShingle | Ming Gao Dongkai Li Kun Liu Shuliang Xu Feng Zhao Ben Guo Anhui Pan Xiao Xie Huanre Han Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing rings Railway Sciences Low-phenyl silicone rubber Sealing ring Sealing performance Finite element analysis Leakage |
| title | Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing rings |
| title_full | Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing rings |
| title_fullStr | Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing rings |
| title_full_unstemmed | Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing rings |
| title_short | Finite element analysis and experimental study on the sealing performance of low-phenyl silicone rubber sealing rings |
| title_sort | finite element analysis and experimental study on the sealing performance of low phenyl silicone rubber sealing rings |
| topic | Low-phenyl silicone rubber Sealing ring Sealing performance Finite element analysis Leakage |
| url | https://www.emerald.com/insight/content/doi/10.1108/RS-11-2024-0047/full/pdf |
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