This plate is support along its bottom surface and subjected to a uniform impulse load over its top surface. Color indicates the total (strain plus kinetic) energy history. By optimizing the microstructure we focus the energy to the bottom center region. Le, C., T. E. Bruns, and D. A. Tortorelli, “Material Microstructure Optimization for Energy Wave Management,” Journal of Mechanics and Physics of Solids, 60 (2), pp. 351-378, 2012.