A combined model for initiation and propagation of damage under fatigue loading for cohesive interface elements

作者：May Michael; Hallett Stephen R^*

来源：Composites Part A: Applied Science and Manufacturing , 2010, 41(12): 1787-1796.

DOI：10.1016/j.compositesa.2010.08.015

• Delamination
• Fatigue
• Computational modelling
• Cohesive elements

A model for the simulation of damage initiation and subsequent propagation under cyclic loading is proposed The basis for the formulation is a cohesive law that combines phenomenological SN-curves for damage initiation with a fracture and damage mechanics approach for crack propagation The evolution of the damage variable is expressed as a function of fatigue cycles The model is independently calibrated for mode I and mode II loading using SN-curves and Paris-law coefficients obtained from simple coupon tests The model was applied to three initiation-driven cases Bending of 90 degrees laminates the Short Beam Shear test and the Double Notched Shear test The predictions for the first tw

• 出版日期2010-12