Mechanical Behavior of Extruded Prismatic Cellular Metals

Abstract

Abstract Various aspects of mechanical behavior are addressed for periodic prismatic cellular metals or metal honeycombs that can be processed using powder metal oxide extrusion technology, including effective elastic properties, initial yield surfaces, quasi-static crushing, and post-buckling behavior. It is demonstrated that the cell geometry plays an important role in determining the mechanical behavior for the same relative density of various cell structures, and that the additional consideration of alloy system leads to significant capability to tailor these materials for various applications. Finally, we point to the need for functionally gradient cell structures to deliver improved performance for multifunctional applications, and briefly discuss appropriate systems-based materials design approaches.