Crack Tip Plasticity By Classic Dislocation Dynamics
Under very short pulse loads in range from 25 to 100 μs, crack tip plasticity a head of the crack tip in the mode I condition was investigated by discrete dislocation dynamics. The obtained dislocation array parameters such as the number of dislocations, dislocation distribution density, crack tip opening displacement and plastic zone size increase with the magnitude of stress intensity factor, KI and pulse durations. The numerical results were well compared with the experimental ones.
Wei Yang, Mamtimin Geni, Tiejun Wang and Zhuo Zhuang
H. Homma and H. N. Tran, "Crack Tip Plasticity By Classic Dislocation Dynamics", Advanced Materials Research, Vols. 33-37, pp. 97-102, 2008