A cohesive zone model for low-cycle fatigue analysis is developed in a consistent thermodynamic framework of elastic-plastic-damage mechanics with internal variable. A specific fatigue activation condition allows to model the material degradation related to the elastic-plastic cyclic loading conditions, with tractions levels lower than the damage activation condition. A moving endurance surface, in the classic framework of kinematic hardening, enables a pure elastic behavior without any fatigue degradation for low levels loading conditions.
Parrinello, F., Benedetti, I., Borino, G. (2018). A thermodynamically consistent CZM for low-cycle fatigue analysis. In Advances in Fracture and Damage Mechanics XVII The 17th International Conference on Fracture and Damage Mechanics (FDM 2018) (pp. 576-582). Brandrain : Trans Tech Publications Ltd [10.4028/www.scientific.net/KEM.774.576].
A thermodynamically consistent CZM for low-cycle fatigue analysis
Parrinello, Francesco
;Benedetti, Ivano;Borino, Guido
2018-01-01
Abstract
A cohesive zone model for low-cycle fatigue analysis is developed in a consistent thermodynamic framework of elastic-plastic-damage mechanics with internal variable. A specific fatigue activation condition allows to model the material degradation related to the elastic-plastic cyclic loading conditions, with tractions levels lower than the damage activation condition. A moving endurance surface, in the classic framework of kinematic hardening, enables a pure elastic behavior without any fatigue degradation for low levels loading conditions.
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