TY - JOUR
T1 - Assessing Plastically Dissipated Energy as a Condition for Fatigue Crack Growth
AU - Cojocaru, D.
AU - Karlsson, Anette M
N1 - Cojocaru, D., and Karlsson, A. M., 2009, "Assessing Plastically Dissipated Energy as a Condition for Fatigue Crack Growth," International Journal of Fatigue, 31(7) pp. 1154-1162.
PY - 2009/7/1
Y1 - 2009/7/1
N2 - The suitability of using a proposed condition for simulating cyclic crack propagation in a numerical scheme is qualitatively investigated, employing the finite element method. The propagation criterion is based on a condition that relates the plastically dissipated energy to a critical value. In the finite element simulation scheme, the crack is allowed to propagate when the criterion is satisfied, and the crack propagates until the condition is no longer fulfilled. Experimentally, it is well established that a negative load ratio increases the crack propagation rate, whereas a tensile overload tends to decrease the crack propagation rate. By simulating these load conditions, we show that the proposed propagation criterion closely captures these rate changes.
AB - The suitability of using a proposed condition for simulating cyclic crack propagation in a numerical scheme is qualitatively investigated, employing the finite element method. The propagation criterion is based on a condition that relates the plastically dissipated energy to a critical value. In the finite element simulation scheme, the crack is allowed to propagate when the criterion is satisfied, and the crack propagates until the condition is no longer fulfilled. Experimentally, it is well established that a negative load ratio increases the crack propagation rate, whereas a tensile overload tends to decrease the crack propagation rate. By simulating these load conditions, we show that the proposed propagation criterion closely captures these rate changes.
KW - Finite element method; Cyclic loading; Crack propagation; Fatigue; ABAQUS; Plastically dissipated energy
UR - https://engagedscholarship.csuohio.edu/enme_facpub/120
U2 - 10.1016/j.ijfatigue.2008.12.009
DO - 10.1016/j.ijfatigue.2008.12.009
M3 - Article
VL - 31
JO - International Journal of Fatigue
JF - International Journal of Fatigue
ER -