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Experimental-Numerical Validation Framework for Micromechanical Simulations

Abstract : A combined experimental-numerical framework is presented in order to validate computations at the microscale. It is illustrated for a flat specimen with two holes, which is made of cast iron and imaged via in situ synchrotron laminography at micrometer resolution during a tensile test. The region in the reconstructed volume between the two holes is analyzed via Digital Volume Correlation (DVC) to measure displacement fields. Finite Element (FE) simulations, whose mesh is made consistent with the studied material microstructure, are driven by measured Dirichlet boundary conditions. Damage levels and gray level residuals for DVC measurements and FE simulations are assessed for validation purposes.
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Ante Buljac, Modesar Shakoor, Jan Neggers, Marc Bernacki, Pierre-Olivier Bouchard, et al.. Experimental-Numerical Validation Framework for Micromechanical Simulations. Jurica Sorić, Peter Wriggers, Olivier Allix. Multiscale Modeling of Heterogeneous Structures, 86, Springer, pp.147-161, 2018, Lecture Notes in Applied and Computational Mechanics book series (LNACM), ⟨10.1007/978-3-319-65463-8_8⟩. ⟨hal-01656323⟩

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