• CN:11-2187/TH
  • ISSN:0577-6686

›› 2003, Vol. 39 ›› Issue (6): 49-52.

• 论文 • 上一篇    下一篇

扫码分享

裂纹扩展阻力KR曲线与试样厚度关系研究

杨继运;张行   

  1. 北京航空航天大学飞行器设计与应用力学系
  • 发布日期:2003-06-15

RESEARCH ON THE RELATION BETWEEN KR-CURVE OF CRACK EXTENSION RESISTANCE AND SAMPLE THICKNESS

Yang Jiyun;Zhang Xing   

  1. Beijing University of Aeronautics and Astronautics
  • Published:2003-06-15

摘要: 在提供的裂纹扩展理论阻力曲线的基础上,给出了阻力曲线与试样厚度关系的数学表达式。利用少量试验结果,根据最小二乘方法即可确定表达式中的参量。这一数学表达式得到了试验结果的验证,并可补充现有手册中试验数据之不足。

关键词: 裂纹扩展, 试样厚度, 阻力曲线

Abstract: A mathematical formula for the relation between resistance curve of crack extension and sample thickness is obtained in fracture mechanics, which is based on the theoretical resistance curve of crack extension provided in a previous work. Some parameters in the formula are made certain in the least square method by using a few of test results. Finally, the mathematical expression is verified by adopting some test results and it will supplement data to the current handbook which has been short of test data.

Key words: Crack growth, Resistance curve, Sample thickness

中图分类号: