Cyclic crack growth in elastic plastic solids: a description in terms of dislocation theory |
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| Authors: | F. O. Riemelmoser R. Pippan O. Kolednik |
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| Affiliation: | Erich-Schmid-Institut für Festk?rperphysik der ?sterreichischen Akademie der Wissenschaften, A-8700 Leoben, Austria, AT
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| Abstract: | Whenever the plastic deformation is in the order of some Burgers vectors, it appears to be reasonable to describe crack tip plasticity by means of “mathematical” dislocations. A discrete dislocation model is presented for the simulation of mode I fatigue crack propagation. In order to take into account the crack face contact behind the crack tip a procedure was developed which enables the computation of the dislocation motion even when crack closure occurs. |
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