A novel modelling technique allowing the prediction of damage onset in composite laminates under fatigue loading has been developed. The onset of damage is a property of the resin system and can be calculated using SN-curves for initiation. The model is calibrated with bending tests on 90° laminates and Short Beam Shear tests for pure mode I and pure mode II loading, respectively. The onset of mixed-mode damage is calculated using a linear rule of mixture. The model has been implemented into the explicit FE-code LS-DYNA and then applied to two simple test cases: The Double Notched Shear test and the Short Beam Shear test. The predictions for both tests are in reasonable agreement with experimental results.
|Translated title of the contribution||A Robust Interface Element Formulation for the Simulation of Damage Initiation under Low Levels of Cyclic Stress|
|Title of host publication||2nd ECCOMAS Thematic Conference on the Mechanical Response of Composites (Composites 2009), London|
|Publication status||Published - 2009|