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Elastic analysis of screw dislocations and two collinear cracks of different length

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2 Author(s)
Shiue, Sham-Tsong ; Telecommunication Laboratories, Ministry of Transportation and Communications, P.O. Box 71, Chung‐Li, Taiwan, Republic of China ; Sanboh Lee

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The elastic interaction between screw dislocations and two collinear internal cracks of different length has been investigated by the dislocation modeling method. The dislocation distribution to simulate the cracks and the stress field are obtained. From the stress field, the stress intensity factor at the crack tip and the image force on the dislocation have been derived. The dislocations inside the crack also play an important role in fracture. Newton’s third law is satisfied in this system. Finally, three special cases are discussed.

Published in:

Journal of Applied Physics  (Volume:71 ,  Issue: 3 )