Abstract
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 |
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| Original language | English |
| Title of host publication | 2nd ECCOMAS Thematic Conference on the Mechanical Response of Composites (Composites 2009), London |
| Publication status | Published - 2009 |