TY - JOUR
T1 - Mechanical examination of crack length dependency and material dependency on threshold stress intensity factor range with Dugdale model
AU - Fukumura, Naoki
AU - Suzuki, Tomohiro
AU - Hamada, Shigeru
AU - Tsuzaki, Kaneaki
AU - Noguchi, Hiroshi
PY - 2015/2/1
Y1 - 2015/2/1
N2 - The threshold stress intensity factor range δKth was analytically calculated under stress control conditions using the plasticity-induced crack closure analysis with the Dugdale model. Before obtaining δKth, the accuracy of the method was verified. The characteristics of the crack closure behavior were discussed by specifying the small-scale yielding (SSY) and large-scale yielding (LSY). The analysis results of δKth were discussed systematically by non-dimensionalizing them with the Dugdale model. Under the SSY condition, δKth was dependent on Young's modulus and Poisson's ratio. Under the LSY condition, δKth increased when the initial crack length or yield strain increased.
AB - The threshold stress intensity factor range δKth was analytically calculated under stress control conditions using the plasticity-induced crack closure analysis with the Dugdale model. Before obtaining δKth, the accuracy of the method was verified. The characteristics of the crack closure behavior were discussed by specifying the small-scale yielding (SSY) and large-scale yielding (LSY). The analysis results of δKth were discussed systematically by non-dimensionalizing them with the Dugdale model. Under the SSY condition, δKth was dependent on Young's modulus and Poisson's ratio. Under the LSY condition, δKth increased when the initial crack length or yield strain increased.
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U2 - 10.1016/j.engfracmech.2015.01.003
DO - 10.1016/j.engfracmech.2015.01.003
M3 - Article
AN - SCOPUS:85027918238
VL - 135
SP - 168
EP - 186
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
SN - 0013-7944
ER -