TY - JOUR
T1 - A revised failure criterion for brittle elastic materials under mixed-mode loading in 2-D
AU - Yosibash, Zohar
AU - Mittelman, Brigit
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/8/1
Y1 - 2016/8/1
N2 - We revise the failure criterion by Yosibash, Priel and Leguillon for V-notched 2-D domains made of brittle elastic materials (Yosibash et al., 2006) under mixed-mode loading. It is based on a finite fracture mechanics (FFM) concept that requires the determination of a finite virtual crack that simultaneously satisfies the normal stress criterion and the energy release rate (ERR) criterion. The FFM ERR criterion is extended to include mode II toughness (GIIc) and reduces to the classical fracture mechanics failure criterion under constrained mode II at the limit when the V-notch solid angle approaches 2π. The revised criterion predictions of failure load and failure initiation angle are compared to experimental observations on PMMA V-notched specimens under mixed mode loading. The predictions compared to the original criterion are slightly improved, especially as the mode mixity ratio increases.
AB - We revise the failure criterion by Yosibash, Priel and Leguillon for V-notched 2-D domains made of brittle elastic materials (Yosibash et al., 2006) under mixed-mode loading. It is based on a finite fracture mechanics (FFM) concept that requires the determination of a finite virtual crack that simultaneously satisfies the normal stress criterion and the energy release rate (ERR) criterion. The FFM ERR criterion is extended to include mode II toughness (GIIc) and reduces to the classical fracture mechanics failure criterion under constrained mode II at the limit when the V-notch solid angle approaches 2π. The revised criterion predictions of failure load and failure initiation angle are compared to experimental observations on PMMA V-notched specimens under mixed mode loading. The predictions compared to the original criterion are slightly improved, especially as the mode mixity ratio increases.
KW - Generalized stress intensity factors
KW - Mixed-mode
KW - V-notch
UR - http://www.scopus.com/inward/record.url?scp=84961221379&partnerID=8YFLogxK
U2 - 10.1016/j.tafmec.2016.03.002
DO - 10.1016/j.tafmec.2016.03.002
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AN - SCOPUS:84961221379
VL - 84
SP - 149
EP - 156
JO - Theoretical and Applied Fracture Mechanics
JF - Theoretical and Applied Fracture Mechanics
SN - 0167-8442
ER -