焊接构造对T型接头超低周疲劳性能的影响
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余文韬,谢旭,成程
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Effects of welding details on ultra-low cycle fatigue performance of T-welded joint
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Wen-tao YU,Xu XIE,Cheng CHENG
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| 表 1 Q345qC钢材的Chaboche混合强化模型参数 |
| Tab.1 Parameters of chaboche' strengthening model for Q345qC steel |
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| 材料 | σ|0 / MPa | Q∞/ MPa | b | Ckin，1/MPa | γ1 | Ckin，2 /MPa | γ2 | Ckin，3 /MPa | γ3 | εf′ | c | | 母材 | 354.10 | 13.2 | 0.6 | 44373.7 | 523.8 | 9346.6 | 120.2 | 946.1 | 18.7 | 0.8219 | −0.6550 | | 热影响区 | 312.57 | 9.8 | 0.7 | 32242.4 | 199.2 | 3858.5 | 43.1 | 329.2 | 0.3 | − | − | | 焊缝 | 428.45 | 17.4 | 0.4 | 12752.3 | 160.0 | 1111.2 | 160.0 | 630.5 | 26.0 | 0.6097 | −0.6786 |
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