Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (12): 1689-1706.doi: https://doi.org/10.1007/s10483-016-2148-8

• Articles • Previous Articles     Next Articles

Closed form solution of stress intensity factors for cracks emanating from surface semi-spherical cavity in finite body with energy release rate method

Hualiang WAN, Qizhi WANG, Xing ZHANG   

  1. Institute of Solid Mechanics, Beihang University, Beijing 100191, China
  • Received:2015-11-26 Revised:2016-05-18 Online:2016-12-01 Published:2016-12-01
  • Contact: Qizhi WANG E-mail:wqz@buaa.edu.cn

Abstract:

In this paper, a new semi-analytical and semi-engineering method of the closed form solution of stress intensity factors (SIFs) of cracks emanating from a surface semi-spherical cavity in a finite body is derived using the energy release rate theory. A mode of crack opening displacements of a normal slice is established, and the normal slice relevant functions are introduced. The proposed method is both effective and accurate for the problem of three-dimensional cracks emanating from a surface cavity. A series of useful results of SIFs are obtained.

Key words: three-dimensional crack, closed form solution, surface cavity, stress intensity factor (SIF), normal slice

2010 MSC Number: 

APS Journals | CSTAM Journals | AMS Journals | EMS Journals | ASME Journals