The calculation of stress intensity factors for combined tensile and shear loading

✍ Scribed by T. K. Hellen; W. S. Blackburn

• Publisher: Springer Netherlands
• Year: 1975
• Tongue: English
• Weight: 847 KB
• Volume: 11
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00116368

✦ Synopsis

A B S T R A C T Stress intensity calculations are presented for cases of combined tensile and shear loading for a linear elastic material. Using functions of a complex variable, a theory is developed to determine the direction of maximum energy release rate. A finite element method using virtual crack extensions is also used to determine the energy release rate for crack extensions in various directions and in particular that which gives the maximum energy release rate.

Except when shear is more significant than tension, these results give good agreement with available experimental evidence. When shear is most significant, plasticity effects are probably becoming important, thereby invalidating the results of any linear theory. However, the results may still be used to determine K I and Kit numerically from virtual crack extension calculations of J~ and Jz for general two-dimensional geometries.