| Evaluation on Fracture Toughness at Dynamic Loading for Welded Joint Based on the Local Approach |
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| 引用本文： | Hongyang JING,Lianyong XU,Lixing HUO and Yufeng ZHANGSchool of Materials Science and Engineering,Tianjin University,Tianjin 300072,China. Evaluation on Fracture Toughness at Dynamic Loading for Welded Joint Based on the Local Approach[J]. 材料科学技术学报, 2004, 20(1): 113-117 |
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| 作者姓名： | Hongyang JING Lianyong XU Lixing HUO and Yufeng ZHANGSchool of Materials Science and Engineering Tianjin University Tianjin 300072 China |
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| 作者单位： | Hongyang JING，Lianyong XU，Lixing HUO and Yufeng ZHANGSchool of Materials Science and Engineering，Tianjin University，Tianjin 300072，China |
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| 基金项目： | 国家自然科学基金，Fok Ying Tung Education Foundation |
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| 摘 要： | The changes in mechanical properties and fracture toughness by dynamic loading were investigated with experiments. The parameter R, which can reflect the effect of the loading rate and the temperature rising during the high loading rate, could be employed to describe the constituent relation for the typical structure steel and its weld metal. The dynamic loading effect on the stress/strain fields and the temperature variation in the vicinity of the crack tip was analyzed by the finite element method, the dynamic fracture behavior was evaluated based on the local approach. It has been found that the Weibull stress is an effective fracture parameter, independent of the temperature and the loading rate.
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Evaluation on Fracture Toughness at Dynamic Loading for Welded Joint Based on the Local Approach |
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| Hongyang JING,Lianyong XU,Lixing HUO,Yufeng ZHANG. Evaluation on Fracture Toughness at Dynamic Loading for Welded Joint Based on the Local Approach[J]. Journal of Materials Science & Technology, 2004, 20(1): 113-117 |
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| Authors: | Hongyang JING Lianyong XU Lixing HUO Yufeng ZHANG |
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| Affiliation: | School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | The changes in mechanical properties and fracture toughness by dynamic loading were investigated with experiments.The parameter R, which can reflect the effect of the loading rate and the temperature rising during the high loading rate, could be employed to describe the constituent relation for the typical structure steel and its weld metal. The dynamic loading effect on the stress/strain fields and the temperature variation in the vicinity of the crack tip was analyzed by the finite element method, the dynamic fracture behavior was evaluated based on the local approach. It has been found that the Weibull stress is an effective fracture parameter, independent of the temperature and the loading rate. |
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| Keywords: | Fracture toughness Dynamic loading Welded joint |
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