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兵工学报 ›› 1996, Vol. 17 ›› Issue (1): 88-92.

• 研究简报 • 上一篇    下一篇

内爆炸载荷下弹钢的动态变形与断製准则研究

隋树元、王淼勋、马晓青、周兰庭   

  1. 北京理工大学,北京,100081
  • 收稿日期:1995-12-01 修回日期:2012-09-16 上线日期:2014-12-25
  • 通讯作者: 隋树元

A Study on the Dynamic Deformation and Fracture Criterion of Shell Steels Explosive Loaded Internally

Sui Shuyuan, Wang Miaoxun, Ma Xiaoqing, et al.   

  1. Beijing Institute of Technology, Beijing, 100081
  • Received:1995-12-01 Revised:2012-09-16 Online:2014-12-25
  • Contact: Sui Shuyuan

摘要: 在Taylor临界应力断裂准则的基础上,假定裂纹前端周向拉伸应力σθ= kσB,理论和实验研究了两糟弹钢(20#钢和9260钢)在内爆炸载荷作用下壳体的膨胀规律,以及断裂系数耳值,应交,应交率和破裂半径。破片回收试验表明,理论计算与实验结果具有相当好的一致性。

关键词: 断裂准则 , 断裂系数 , 破裂半径 , 高应变率

Abstract: On the basis of Taylor's tensile stress fracture criterion, and assuming that the tangential tensile stress σθ= KσΒ at the crack’s tip, the radial expansion, fracture co?efficient k,stress-strain, strain rate and burst radius of 2 varieties of shell steel are studied both in theory and experimentally. Fragments collected in the tests show that theoretical calculations are in good agreement with experimental results.

Key words: fracture criterion , fracture coefficient , burst radius , high strain rate