西南石油大学学报(自然科学版) ›› 1989, Vol. 11 ›› Issue (3): 44-48.DOI: 10.3863/j.issn.1000-2634.1989.03.006

• 石油机械工程 • 上一篇    下一篇

广义最小塑性区尺寸判据

肖芳淳

  

  1. (石油机械系)
  • 收稿日期:1989-05-12 修回日期:1900-01-01 出版日期:1989-08-20 发布日期:1989-08-20
  • 通讯作者: 肖芳淳

GENERALIED MINIMUM PLATIC ZONE SIZE CRITERION

Xiao Fang-chun

  

  1. (Department of Mechanical Engineering)
  • Received:1989-05-12 Revised:1900-01-01 Online:1989-08-20 Published:1989-08-20
  • Contact: Xiao Fang-chun

摘要: 本文为了解决裂纹扩展问题,介绍一种新的断裂判据。在广义的Von Mises层服准则基础上,结合裂纹尖端附近的奇异应力场,得到了一个新的判据,名叫广义最小塑性区尺寸刹据,结果与参考文献(1)一致。概念清晰,方法简便。

关键词: 断裂判据 屈服准则 新方法

Abstract: In this paper, we introduce a new fracture criterion in order to solve
crack propagation problems, Based on the generalized Von M ises yield crite-
rion, the singular stress field near a crack tip is adopted, A new criterion
is obtained, Its result is coincided with Ref,(1).The concept is clear,
and the method is simple and convenient

Key words: Fracture criterion Yield criterion New method