TY - JOUR
T1 - DYNAMIC SIMULATION OF CRACK PROPAGATION WITH DISLOCATION EMISSION AND MIGRATION
AU - ZACHAROPOULOS, N.
AU - SROLOVITZ, D.J.
AU - LeSAR, R.A.
PY - 1996
Y1 - 1996
N2 - We present a simulation procedure for fracture that self-consistently accounts for dislocation emission, dislocation migration and crack growth. We find that the dislocation microstructure in front of the crack tip is highly organized and shows a complex temporal-spatial evolution. The final dislocation microstructure and the number of emitted dislocations immediately proceeding fracture varies rapidly with the loading rate. For high loading rates, fracture occurs at smaller loads with increasing loading rate. However, the load at fracture shows a maximum with respect to loading rates.
AB - We present a simulation procedure for fracture that self-consistently accounts for dislocation emission, dislocation migration and crack growth. We find that the dislocation microstructure in front of the crack tip is highly organized and shows a complex temporal-spatial evolution. The final dislocation microstructure and the number of emitted dislocations immediately proceeding fracture varies rapidly with the loading rate. For high loading rates, fracture occurs at smaller loads with increasing loading rate. However, the load at fracture shows a maximum with respect to loading rates.
UR - http://www.scopus.com/inward/record.url?scp=0029735862&partnerID=8YFLogxK
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U2 - 10.1557/proc-409-115
DO - 10.1557/proc-409-115
M3 - RGC 21 - Publication in refereed journal
SN - 0272-9172
VL - 409
SP - 115
EP - 120
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
T2 - 1995 MRS Fall Meeting
Y2 - 27 November 1995 through 1 December 1995
ER -