Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength Steel
The application of high-strength steel in extremely cold polar regions can reduce steel consumption and save the cost of fabrication, transportation, and installation of steel structures in the harsh low-temperature environment. In order to study the mechanical properties of HG785 high-strength stee...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Shanghai Jiao Tong University
2024-11-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
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| Online Access: | https://xuebao.sjtu.edu.cn/article/2024/1006-2467/1006-2467-58-11-1707.shtml |
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| author | CAI Ao, CHEN Mantai, ZUO Wenkang, DUAN Liping, ZHAO Jincheng |
| author_facet | CAI Ao, CHEN Mantai, ZUO Wenkang, DUAN Liping, ZHAO Jincheng |
| author_sort | CAI Ao, CHEN Mantai, ZUO Wenkang, DUAN Liping, ZHAO Jincheng |
| collection | DOAJ |
| description | The application of high-strength steel in extremely cold polar regions can reduce steel consumption and save the cost of fabrication, transportation, and installation of steel structures in the harsh low-temperature environment. In order to study the mechanical properties of HG785 high-strength steel under polar low-temperature conditions, uniaxial tensile tests were conducted on high-strength steel coupons by considering two thicknesses and five low-temperature cases. It was found that the elastic modulus, yield strength, and ultimate tensile strength of HG785 high-strength steel in polar low-temperature environment are higher than those at an ambient temperature of 25 ℃. All tensile coupon specimens failed by traditional necking in a ductile manner without brittle failure tendency. Based on the test results, accurate prediction models for mechanical properties of HG785 high-strength steel in polar low-temperature environment were established by the best subset regression analysis. This will facilitate the application of high-strength steel in the design of structural members, joints, and systems in an efficient manner, and provide theoretical support for the promotion of high-strength steel structures in polar low-temperature regions. |
| format | Article |
| id | doaj-art-f9ed4ddc9da94e55a4b7ed7453b637c0 |
| institution | Kabale University |
| issn | 1006-2467 |
| language | zho |
| publishDate | 2024-11-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj-art-f9ed4ddc9da94e55a4b7ed7453b637c02024-12-03T09:54:47ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672024-11-0158111707171510.16183/j.cnki.jsjtu.2022.526Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength SteelCAI Ao, CHEN Mantai, ZUO Wenkang, DUAN Liping, ZHAO Jincheng01. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThe application of high-strength steel in extremely cold polar regions can reduce steel consumption and save the cost of fabrication, transportation, and installation of steel structures in the harsh low-temperature environment. In order to study the mechanical properties of HG785 high-strength steel under polar low-temperature conditions, uniaxial tensile tests were conducted on high-strength steel coupons by considering two thicknesses and five low-temperature cases. It was found that the elastic modulus, yield strength, and ultimate tensile strength of HG785 high-strength steel in polar low-temperature environment are higher than those at an ambient temperature of 25 ℃. All tensile coupon specimens failed by traditional necking in a ductile manner without brittle failure tendency. Based on the test results, accurate prediction models for mechanical properties of HG785 high-strength steel in polar low-temperature environment were established by the best subset regression analysis. This will facilitate the application of high-strength steel in the design of structural members, joints, and systems in an efficient manner, and provide theoretical support for the promotion of high-strength steel structures in polar low-temperature regions.https://xuebao.sjtu.edu.cn/article/2024/1006-2467/1006-2467-58-11-1707.shtmlhigh-strength steeluniaxial tensile testlow temperature mechanical propertiesprediction model |
| spellingShingle | CAI Ao, CHEN Mantai, ZUO Wenkang, DUAN Liping, ZHAO Jincheng Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength Steel Shanghai Jiaotong Daxue xuebao high-strength steel uniaxial tensile test low temperature mechanical properties prediction model |
| title | Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength Steel |
| title_full | Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength Steel |
| title_fullStr | Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength Steel |
| title_full_unstemmed | Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength Steel |
| title_short | Experimental Study and Prediction Model of Low Temperature Mechanical Properties of High-Strength Steel |
| title_sort | experimental study and prediction model of low temperature mechanical properties of high strength steel |
| topic | high-strength steel uniaxial tensile test low temperature mechanical properties prediction model |
| url | https://xuebao.sjtu.edu.cn/article/2024/1006-2467/1006-2467-58-11-1707.shtml |
| work_keys_str_mv | AT caiaochenmantaizuowenkangduanlipingzhaojincheng experimentalstudyandpredictionmodeloflowtemperaturemechanicalpropertiesofhighstrengthsteel |