Multiple penny-shaped cracks interaction in a finite body and their effect on stress intensity factor
Author(s)
Author(s)
Tsang, D. K. L.
Oyadiji, S. O.
Date Issued
2003
Publisher
Elsevier
Journal
Engineering Fracture Mechanics
Volume
70
Issue
15
Start page
2199
End page
2214
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.
SFU Affiliated Publication
No
Availability at SFU Library
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