全部

力学与实践 ›› 2019, Vol. 41 ›› Issue (6): 703-708.doi: 10.6052/1000-0879-19-206

• 教育研究 • 上一篇    下一篇

低碳钢拉伸的真应力——应变曲线测量1)

李凯*, †, **, 2), 薛永江*, **   

  1. * 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
  • 收稿日期:2019-06-03 发布日期:2019-12-27
  • 通讯作者: 2) 李凯,副教授,主要从事实验固体力学研究。E-mail: likai@shu.edu.cn
  • 基金资助:
    1) 国家自然科学基金资助项目(11332005)

MEASUREMENT IN TENSILE TEST OF TRUE STRESS-STRAIN CURVES FOR LOW-CARBON STEEL1)

LI Kai*, †, **, 2), XUE Yongjiang*, **   

  1. * 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
  • Received:2019-06-03 Published:2019-12-27

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。

关键词: 低碳钢, 应力-应变曲线, 三维数字图像相关, 实验教学

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.

Key words: low carbon steel, stress-strain curve, three-dimensional digital image correlation, experiment teaching

中图分类号: 

  • TB301