Multiple penny-shaped cracks interaction in a finite body and their effect on stress intensity factor

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

21 Scopus Citations
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Author(s)

  • D. K L Tsang
  • S. O. Oyadiji
  • A. Y T Leung

Detail(s)

Original languageEnglish
Pages (from-to)2199-2214
Journal / PublicationEngineering Fracture Mechanics
Volume70
Issue number15
Publication statusPublished - Oct 2003
Externally publishedYes

Abstract

In this paper we investigate the stress intensity factors (SIFs) of multiple penny-shaped cracks in an elastic solid cylinder under mode I (axial tension) loading. The cracks are located symmetrically and in parallel to one another in the isotropic cylinder. The fractal-like finite element method (FFEM) is employed to study the interaction of multiple cracks and to demonstrate the efficiency of the FFEM for multiple crack problems. The results show that the SIF values of the inner cracks, which are denoted as crack number 1,2,3,...,(n+1)/2 of a stack of n parallel cracks, are lower than the SIF values of a single crack by between 16% and 48%. Also, the outermost crack, that is the crack closest to the boundaries of a multiple cracked body, has the highest SIF values and is, therefore, likely to fail first. © 2002 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Finite element method, Fracture mechanics, Stress intensity factor

Citation Format(s)

Multiple penny-shaped cracks interaction in a finite body and their effect on stress intensity factor. / Tsang, D. K L; Oyadiji, S. O.; Leung, A. Y T.

In: Engineering Fracture Mechanics, Vol. 70, No. 15, 10.2003, p. 2199-2214.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review