A Finite Element Analysis of a Crack Penetrating or Deflecting into an Interface in a Thin Laminate

Abstract:

Article Preview

The crack tip driving force of a crack growing from a pre-crack that is perpendicular to and terminating at an interface between two materials is investigated using a linear fracture mechanics theory. The analysis is performed both for a crack penetrating the interface, growing straight ahead, and for a crack deflecting into the interface. The results from finite element calculations are compared with asymptotic solutions for infinitesimally small crack extensions. The solution is found to be accurate even for fairly large amounts of crack growth. Further, by comparing the crack tip driving force of the deflected crack with that of the penetrating crack, it is shown how to control the path of the crack by choosing the adhesion of the interface relative to the material toughness.

Info:

Periodical:

Edited by:

Hong-Yuan Liu, Xiaozhi Hu and Mark Hoffman

Pages:

173-178

DOI:

10.4028/www.scientific.net/KEM.312.173

Citation:

S. Kao-Walter et al., "A Finite Element Analysis of a Crack Penetrating or Deflecting into an Interface in a Thin Laminate", Key Engineering Materials, Vol. 312, pp. 173-178, 2006

Online since:

June 2006

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.