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D3.1 Numerical analyses of steel/multi-materials solution - Abstract

D3.1 is conceived within the framework of the WP3. Each chapter of this deliverable will be devoted to cover the contents and methodologies of each task inside the WP3. The first chapter is focused on the model development and comparison with current software applied in fatigue in metals. Here a detailed information for the current numerical and analytical methodologies used for modelling fatigue in metals is given. Finally, a description and comparison of the different modelling workflows is provided.

Next, the second chapter of this document, is devoted to task 3.2 of the WP3 and therefore the calibration procedure performed in order to characterize the different metals used in the project is described. The following chapter, covering the work done in task 3.3, extends the exposed methodologies to multi-layered composite materials, describes its particular calibration process and ensures its validity and accuracy. Here a description of an extended approach used in the industry for the fatigue characterization of this kind of materials is presented for its comparison with the adopted numerical methodology in the project.

Finally, in the last chapter, an extensive fatigue validation work on small scale specimens tackling residual life, load sequence and overload effects is shown and discussed.