A Robust Interface Element Formulation for the Simulation of Damage Initiation under Low Levels of Cyclic Stress

M May, SR Hallett

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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 contributionA Robust Interface Element Formulation for the Simulation of Damage Initiation under Low Levels of Cyclic Stress
Original languageEnglish
Title of host publication2nd ECCOMAS Thematic Conference on the Mechanical Response of Composites (Composites 2009), London
Publication statusPublished - 2009

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