MESO‐SCALE COMPUTATIONAL STUDY OF THE SHOCK‐COMPRESSION OF COLD‐ROLLED Ni‐Al LAMINATES

Meso‐scale computational analysis is used to study the shock‐compression response of cold‐rolled Ni‐Al laminates which represent a fully dense reactive system with continuous interparticle contacts. The laminates were prepared through rolling multiple Ni and Al foils with initial thicknesses of 127 μm and 178 μm, respectively. Simulations of shock wave propagation through the laminates are performed using CTH on heterogeneous, imported microstructures obtained through optical microscopy. Uniaxial strain experiments are utilized to validate the simulated responses in order to draw comparisons to previously obtained results for Ni‐Al powder compacts. The Baer‐Nunziato nonequilibrium multiphase granular mixture model is then used to model the 1D reaction response of the materials during dynamic loading.