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| 20号钢的冲击拉伸力学性能试验研究 | |
| 引用本文： | 范志强,高德平,覃志贤,姜涛.20号钢的冲击拉伸力学性能试验研究[J].燃气涡轮试验与研究,2006,19(4):35-37,51. |
| 作者姓名： | 范志强 高德平 覃志贤 姜涛 |
| 作者单位： | 1. 南京航空航天大学,能源与动力学院,江苏,南京,210016;中国燃气涡轮研究院,四川,成都,610500 2. 南京航空航天大学,能源与动力学院,江苏,南京,210016 3. 中国燃气涡轮研究院,四川,成都,610500 |
| 摘 要： | 利用旋转盘式间接杆杆型冲击拉伸试验装置对20号钢进行了三个应变率的冲击拉伸试验研究，得到了材料在不同应变率下的应力应变曲线。结果表明，随着应变率的增加，材料的极限强度随之增大，具有明显的应变率强化效应。根据材料住不同应变率下的试验结果，拟合了Johnson—Cook模型中的材料常数，并修正了应变率强化系数C，确定了20号钢的Johnson—Cook本构关系。数据拟合结果与试验结果吻合良好。 |
| 关 键 词： | 包容性 应变率 冲击拉伸 Johnson-Cook模型 |
| 文章编号： | 1672-2620（2006）04-0035-03 |
| 收稿时间： | 06 15 2006 12:00AM |
| 修稿时间： | 2006-06-152006-10-17 |
Experimental Study of 20# Steel Under Tensile Impact |
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| FAN Zhi-qiang,GAO De-ping,QIN Zhi-xian,JIANG Tao.Experimental Study of 20# Steel Under Tensile Impact[J].Gas Turbine Experiment and Research,2006,19(4):35-37,51. | |
| Authors: | FAN Zhi-qiang GAO De-ping QIN Zhi-xian JIANG Tao |
| Institution: | 1. Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China; 2. China Gas Turbine Establishment, Chengdu 610500,China |
| Abstract: | Bar-bar tensile impact testing apparatus was used to study mechanical behavior of 20# steel at different strain rates. From the stress-strain curves obtained, it is found that the strain rate effect is distinct. The results of this experimental work were used to define a new set of material constants for the strength component of the Johnson-Cook model for 20# steel. The results and analysis provided for 20# steel show that the Johnson-Cook model can accurately represent the stress-strain response of the material. |
| Keywords: | containment strain rate tensile impact Johnson-Cook model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |