Crack Analysis of 3D Functionally Graded Materials by a BEM

Abstract:

This paper presents an elastostatic crack analysis in three-dimensional (3D), isotropic, functionally graded and linear elastic solids. A boundary element method (BEM) based on boundary-domain integral equations is applied. A multi-domain technique and discontinuous elements at the crack-front are adopted. To show the effects of the materials gradients on the crackopening- displacements (CODs) and the stress intensity factors (SIFs), numerical results for a pennyshaped crack are presented and discussed.

• Periodical: Key Engineering Materials (Volumes 385-387)
• Pages: 881-884
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.385-387.881
• Online since: July 2008
• Authors: Jing Wang, Xiao Wei Gao, Chuan Zeng Zhang
• Keywords: Boundary Element Method (BEM), Crack Analysis, Fracture Mechanic, Functionally Graded Material (FGM), Stress Intensity Factor (SIF)

References

[1] X.W. Gao, L. Guo, and Ch. Zhang: Eng. Anal. Bound. Elem. Vol. 31 (2007), p.965.

[2] X.W. Gao, Ch. Zhang and L. Guo: Eng. Anal. Bound. Elem. Vol. 31 (2007), p.974.

[3] X.W. Gao and T.G. Davies: Boundary Element Programming in Mechanics (Cambridge University Press, 2002).

[4] X.W. Gao: Eng. Anal. Bound. Elem. Vol. 26 (2002), p.905.