An improved method for computing the [formula omitted] integral

The J 2 integral, used in conjunction with the well-known J (or J 1 ) integral, can assist the analyst in the prediction of in-plane mixed-mode stress intensity factors via finite element stress analysis. However, direct evaluation of J 2 yields results which are very sensitive to the crack tip mode...

Full description

Saved in:
Bibliographic Details
Published inEngineering fracture mechanics Vol. 26; no. 5; pp. 691 - 700
Main Author Eischen, J.W.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1987
Online AccessGet full text

Cover

More Information
Summary:The J 2 integral, used in conjunction with the well-known J (or J 1 ) integral, can assist the analyst in the prediction of in-plane mixed-mode stress intensity factors via finite element stress analysis. However, direct evaluation of J 2 yields results which are very sensitive to the crack tip modeling employed, thus reducing the efficacy of the J 2 integral. A new technique is proposed to circumvent this problem. This new technique also permits one to easily calculate the non-singular stress component σ x0 which is known to be important in predicting crack kinking angles.
ISSN:0013-7944
1873-7315
DOI:10.1016/0013-7944(87)90134-2