naa a22 4500 510772188 CHVBK 20180411083218.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11837-012-0508-9 doi (NATIONALLICENCE)springer-10.1007/s11837-012-0508-9 Multiresolution Modeling of the Dynamic Loading of Metal Matrix Composites [Elektronische Daten] [Rémi Dingreville, Joshua Robbins, Thomas Voth] The mechanical behavior of metal matrix composites (MMCs) varies significantly under rapid straining as compared to quasi-static loading and is often dominated by underlying microstructural features (grain structure, porosity, inclusions, and defects). Analysis of the behavior of MMCs under dynamic loading requires theoretical and experimental approaches that integrate the strain rate and microstructural effects. In this article, we introduce a multiresolution modeling capability for studying nonlinear planar wave propagation in heterogeneous materials with an application to MMCs. This framework is based on direct numerical simulation (DNS) and compared to an upscaled microcontinuum model. The DNS explicitly accounts for microstructural features characterizing the materials and is based on a combination of a crystal plasticity formulation for the behavior of the host matrix and the Johnson-Holmquist model for the particulate reinforcements. The nonuniformity of the wave propagating through MMCs is spatially resolved. The results from the mesoscale DNS are used to inform a microcontinuum model that introduces richer kinematics to account for microstructural features without explicitly modeling them and with far fewer total degrees of freedom. A quantitative comparison of the reduced degrees of freedom model against DNS is performed and enables us to draw conclusions on the predictive capability of the microcontinuum model to study the dynamic response of heterogeneous materials. TMS (outside the USA), 2012 Dingreville Rémi Sandia National Laboratories, 87185, Albuquerque, NM, USA aut Robbins Joshua Sandia National Laboratories, 87185, Albuquerque, NM, USA aut Voth Thomas Sandia National Laboratories, 87185, Albuquerque, NM, USA aut JOM Springer US; http://www.springer-ny.com 65/2(2013-02-01), 203-214 1047-4838 65:2<203 2013 65 11837 https://doi.org/10.1007/s11837-012-0508-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-012-0508-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dingreville Rémi Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- Robbins Joshua Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- Voth Thomas Sandia National Laboratories, 87185, Albuquerque, NM, USA aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/2(2013-02-01), 203-214 1047-4838 65:2<203 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer