Analysis of stress intensity factors for a pair of edge cracks in semi-infinite medium with distributed eigenstrain

• Autorzy: Afsar A. M. , Ahmed S. R.
• Języki publikacji: EN

Abstrakty

EN

This study analyzes stress intensity factors for a pair of edge cracks in a semi-infinite medium with a distribution of eigenstrain and subjected to a far field uniform applied load. The eigenstrain is considered to be distributed arbitrarily over a region of finite depth extending from the free surface. The cracks are represented by a distribution of edge dislocations. By using the complex potential functions of the edge dislocations, a simple effective method is developed to calculate the stress intensity factor for the edge cracks. The method is employed to obtain some numerical results of the stress intensity factor for different distributions of eigenstrain. The numerical results reveal that the stress intensity factor of the edge cracks is significantly influenced by the magnitude as well as distribution of eigenstrain within the finite depth. The eigenstrains that induce compressive stresses at and near the free surface of the semi-infinite medium reduce the stress intensity factor that, in turn, enhances the apparent fracture toughness of the material.

Słowa kluczowe

EN

stress intensity factor; eigenstrain; edge dislocation; edge crack; semi-infinite medium

PL

teoria sprężystości; materiały kompozytowe

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2006
• Tom: Vol. 11, no 2
• Strony: 269--287
• Opis fizyczny: Bibliogr. 13 poz., tab., wykr.

Twórcy

autor

Afsar A. M.

autor

Ahmed S. R.

• Mechanical Engineering Department Bangladesh University of Engineering and Technology (BUET),

Bibliografia

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