Decoupling toughness and strength through architected plasticity

We investigate the elastic–plastic fracture of architected materials through experiments and theory, with a focus on understanding combined effects material length scale geometry, using pillar array as model structure. show that load sharing across pillars, hence toughness, can be controlled by changing spatial distribution height pillars. A simple relation is presented to relate extent plastic process zone structure resulting toughness. This allows for quantitative prediction failure loads specimens plasticity localized structured region reveals strength toughness decoupled architecture. Our findings establish foundation design enhanced