| 603钢动态剪切性能及失效分析研究 |
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| 引用本文： | 孙中岳,许泽建,刘宇,仝毅,黄风雷.603钢动态剪切性能及失效分析研究[J].北京理工大学学报,2017,37(S2):137-141. |
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| 作者姓名： | 孙中岳 许泽建 刘宇 仝毅 黄风雷 |
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| 作者单位： | 北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081 |
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| 基金项目： | 国家自然科学基金资助项目（11772062，11302030） |
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| 摘 要： | 采用基于霍普金森杆的新型加载技术对603钢的动态剪切性能进行了测试研究，并分析了其失效的微观机理.在超过104 s-1的应变率下获得了材料的剪应力-剪应变曲线，并结合实验观测确定了材料的失效参数.结果显示，材料的流动应力存在明显的应变率强化效应；而且随着应变率的升高，失效应力略有上升，而失效应变逐渐降低.ABAQUS/Explicit有限元分析软件所得剪应力-剪应变曲线与实验结果吻合较好.通过断口分析可知，材料的失效总体表现为韧性断裂，同时受到绝热剪切作用的影响；在高应变率下，材料的绝热剪切现象更加明显.
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| 关 键 词： | 动态剪切 高应变率 数值模拟 断口分析 |
| 收稿时间： | 2017/9/20 0:00:00 |
Dynamic ShearProperty and Failure Analysis of 603 Steel |
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| SUN Zhong-yue,XU Ze-jian,Liu Yu,TONG Yi and HUANG Feng-lei.Dynamic ShearProperty and Failure Analysis of 603 Steel[J].Journal of Beijing Institute of Technology(Natural Science Edition),2017,37(S2):137-141. |
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| Authors: | SUN Zhong-yue XU Ze-jian Liu Yu TONG Yi and HUANG Feng-lei |
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| Institution: | State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China and State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Dynamic shear properties of 603 steel were tested by the new Hopkinson bar loading technology, and the microscopic failure mechanism was analyzed. The shear stress-shear strain curves of the material were obtained at strain rates above 104 s-1, and failure parameters of the material were determined. The results show that with the increase of strain rate, the flow stress shows an obvious strengthening effect, while the failure stress increases slightly, and the failure strain decreases gradually. With ABAQUS/Explicit finite element analysis, the calculated shear stress-shear strain curves agree well with the experimental results. Fracture analysis shows that the failure mode of the material is ductile fracture, and it is influenced by adiabatic shear bands. With the increase of strain rate, the effect of adiabatic shear band is more obvious. |
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| Keywords: | dynamic shear high strain rate numerical simulation fracture analysis |
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