| 低碳钢拉伸的真应力——应变曲线测量1) |
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| 引用本文： | 李凯, 薛永江. 低碳钢拉伸的真应力——应变曲线测量1)[J]. 力学与实践, 2019, 41(6): 703-708. doi: 10.6052/1000-0879-19-206 |
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| 作者姓名： | 李凯 薛永江 |
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| 作者单位： | * 上海市应用数学和力学研究所,上海 200444; † 上海市能源工程力学重点实验室,上海 200072; ** 上海大学力学与工程科学学院,上海 200444 |
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| 基金项目： | 1) 国家自然科学基金资助项目(11332005) |
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| 摘 要： | 针对低碳钢拉伸的真应力-应变曲线测量问题,开发了基于单相机三维数字图像相关的实验教学系统。该系统可测量低碳钢拉伸过程中的表面三维形貌和表面应变,并由此获得低碳钢拉伸的真应力-应变曲线。该实验有助于学生深入理解塑性金属材料的力学性能,培养其科研兴趣。
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| 关 键 词： | 低碳钢 应力-应变曲线 三维数字图像相关 实验教学 |
| 收稿时间： | 2019-06-03 |
MEASUREMENT IN TENSILE TEST OF TRUE STRESS-STRAIN CURVES FOR LOW-CARBON STEEL1) |
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| LI Kai, XUE Yongjiang. MEASUREMENT IN TENSILE TEST OF TRUE STRESS-STRAIN CURVES FOR LOW-CARBON STEEL1)[J]. Mechanics in Engineering, 2019, 41(6): 703-708. doi: 10.6052/1000-0879-19-206 |
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| Authors: | LI Kai XUE Yongjiang |
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| Affiliation: | * Shanghai Institute of Applied Mathematics and Mechanics, Shanghai 200444, China; † Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai 200072, China; ** School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, China |
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| Abstract: | In order to measure the true stress-strain curve of low carbon steel, an experimental teaching system based on a single camera three-dimensional digital image correlation system is developed. The system can be used to measure the three-dimensional surface morphology and the surface strain in the tensile test of a low carbon steel bar, and obtain its true stress-strain curve. This experiment helps the students to understand the mechanical properties of plastic metal materials and cultivate their interest in the scientific research. |
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| Keywords: | low carbon steel stress-strain curve three-dimensional digital image correlation experiment teaching |
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