TY - JOUR
T1 - State rate, grain size and material constant dependence of dynamic stress intensity factor by dynamical piling-up of dislocations
AU - Yokobori, Toshimitsu
AU - Isogai, Takeshi
AU - Nishi, Hiroshi
AU - Kako, Takuzo
PY - 1990/7
Y1 - 1990/7
N2 - A computer simulation concerning the dynamic stress intensity factor, Kd(t), was carried out for various material constants. The constitutive equation of Kd(t) was formulated as a function of stress rate, grain size and material constants. This theory corresponds to the effect of stress rate on experimental results of the yield stress and the fracture toughness under room temperature. Furthermore, the mechanical characteristics of the dimensional value of the dislocation-free zone for free expansion were analyzed for various materials, and Kd(t) was estimated from the dislocation-free zone.
AB - A computer simulation concerning the dynamic stress intensity factor, Kd(t), was carried out for various material constants. The constitutive equation of Kd(t) was formulated as a function of stress rate, grain size and material constants. This theory corresponds to the effect of stress rate on experimental results of the yield stress and the fracture toughness under room temperature. Furthermore, the mechanical characteristics of the dimensional value of the dislocation-free zone for free expansion were analyzed for various materials, and Kd(t) was estimated from the dislocation-free zone.
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M3 - Article
AN - SCOPUS:0025461903
VL - 56
SP - 1570
EP - 1576
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
SN - 0387-5008
IS - 527
ER -