| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
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| Symposium
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ICME Case Studies: Successes and Challenges for Generation, Distribution, and Use of Public/Pre-Existing Materials Datasets
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| Presentation Title |
A Validation Framework for Microstructure-sensitive Fatigue Simulation Models |
| Author(s) |
Ali Riza Durmaz, Nikolai Arnaudov, Erik Natkowski, Petra Sonnweber-Ribic, Sebastian Münstermann, Chris Eberl, Peter Gumbsch |
| On-Site Speaker (Planned) |
Ali Riza Durmaz |
| Abstract Scope |
Fatigue crack initiation under very-high-cycle-fatigue (VHCF) conditions is highly susceptible to microstructural extrema. Therefore, VHCF life simulation depends on micromechanical crack initiation models. While corresponding computational models exist, their systematic validation is difficult. This is attributed to the lack of costly experimental data on the microstructure scale and the absence of validation methodologies.
To this end, EN1.4003 ferritic steel mesoscale specimens were tested in a bending-resonant fatigue setup that allows sensitive damage detection. The experiment was mimicked in a sub-modeling simulation embedding the measured microstructure into the specimen geometry, on which experimental boundary conditions are applied. An elastic continuum simulation of the specimen geometry imposes load on the embedded microstructure, for which deformation is evaluated by phenomenological crystal plasticity FE. Simulated mechanical fields are compared with experimental semantically segmented damage locations from micrographs. This open-access framework enables user subroutine statistical validation and serves as a benchmark for future modeling approaches. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
ICME, Modeling and Simulation, Iron and Steel |