| Autor: |
Dollar, Anna, Steif, Paul S. |
| Zdroj: |
Journal of Applied Mechanics; June 1989, Vol. 56 Issue: 2 p291-298, 8p |
| Abstrakt: |
A crack impinging normally upon a frictional interface is studied theoretically. We employ a solution technique which superposes the solution of a crack in a perfectly-bonded elastic medium with a continuous distribution of dislocations which represent slippage at the frictional interface. This procedure reduces the problem to a singular integral equation which is solved numerically. Specifically, we consider the problem of an infinite sheet subjected to uniaxial tension containing a finite crack which lies normal to the tension axis and has both crack tips impinging normally on frictional interfaces. The limiting problem of a semi-infinite crack impinging on a frictional interface is considered as well. Posed as model problems for cracking in weakly bonded fiber composites, these studies reveal the effective blunting that can result when a weak interface serves to deflect a propagating crack. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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