Tomohisa Kojima presents dynamic mechanics of architected materials at Universität Freiburg; topology drives impact response in lattice structures.
Toward Damage-Tolerant Architected Materials: From Dynamic Response to Structural Toughness – Universität Freiburg
Toward Damage-Tolerant Architected Materials: From Dynamic Response to Structural Toughness
Architected materials, including lattice structures and mechanical metamaterials, have attracted increasing attention because of their potential for lightweight design, energy absorption, and multifunctional performance. While their quasi-static mechanical behavior has been extensively studied, the understanding of dynamic deformation, damage, and fracture remains limited. In this talk, recent research on the dynamic mechanics of architected materials conducted at Saitama University will be introduced. The presentation focuses on experimental and numerical studies of additively manufactured lattice structures under dynamic loading, with particular attention to their deformation behavior, energy absorption characteristics, and stress-wave response. The influence of structural topology on mechanical behavior under impact loading will also be discussed based on recent observations and numerical investigations. Furthermore, emerging challenges related to damage evolution, fracture, and structural toughness in discrete architectures will be highlighted. Finally, future perspectives toward developing mechanics-based approaches for the design of impact-resistant and damage-tolerant architected materials will be discussed.
Tomohisa Kojima is an Associate Professor at Saitama University, Japan. He received his Ph.D. in Mechanical Engineering from Tokyo Institute of Technology in 2017. His research focuses on impact engineering, fracture mechanics, and mechanical metamaterials, particularly the dynamic deformation, damage, and fracture of architected materials.