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

In English

Författare

Summary, in English

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.

Avdelning/ar

Publiceringsår

2006

Språk

Engelska

Sidor

173-178

Publikation/Tidskrift/Serie

Key Engineering Materials

Volym

312

Dokumenttyp

Artikel i tidskrift

Förlag

Trans Tech Publications

Ämne

  • Mechanical Engineering

Nyckelord

  • Adhesion
  • Crack Tip Driving Force
  • Deflecting
  • Interface
  • Penetrating

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1013-9826