Using GEOS-MPM Code to Simulate Shock Compression of Metal Foams

The high-pressure response of bulk solids is well characterized and constrained through dynamic planar impact and quasi-static compression experiments. Many applications, however, involve porous foams and additively manufactured materials whose complex geometries can significantly alter shock response and its ability to be predicted. This work uses the GEOS-MPM code to perform mesoscale simulations of shock compression in porous metals, providing a framework for extending knowledge of bulk material behavior to porous media. Copper shock models are validated, analysis methods are verified, and applications to porous metal foams are demonstrated. These simulations establish a foundation for future model development, including improved treatment of energy partitioning, partial melting and strength effects, and multiphase material behavior.