西南石油大学学报(自然科学版) ›› 1988, Vol. 10 ›› Issue (4): 124-131.DOI: 10.3863/j.issn.1000-2634.1988.04.013

• 论文 • 上一篇    下一篇

关于弹塑性应力应变集中关系的探讨

马景槐
  

  1. 新疆石油学院
  • 收稿日期:1988-03-21 修回日期:1900-01-01 出版日期:1988-11-20 发布日期:1988-11-20

AN APPROACH TO ELASTIC-PLASTIC STRESS-STRAIN CONCENTRATION RELATION

Ma Jing-huai
  

  1. Xinjiang Petroleum Institute
  • Received:1988-03-21 Revised:1900-01-01 Online:1988-11-20 Published:1988-11-20

摘要:

本文分析了Neuber关系的推导过程,描出Neuber关系,即使对Ⅲ型加载问题也不是解析解。本文根据弹塑性断裂力学理论,对幂强化材料,导出了Ⅲ型加载裂纹问题弹塑性应力应变集中关系。同时分折了Ⅰ型缺口弹塑性应力应变集中关系。

关键词: 弹塑性, 应变, 应力分析, 断裂, 力学

Abstract:

Neuber s formula is analyzed in this paper. It is found that Neuber s formula is not an analytical solution even to the antiplane shear loading problem. By using the theory of elastic-plastic fracture, an elastic-plastic stress-strain concentration formula is obtained for antiplane shear loading crack problem of power hardening materials.

Key words: Elastico-plasticity, Strain, Stress analysis, Fracture, Mechanics