The 14th Global Conference on Materials Science and Engineering
(CMSE 2025)

Abstract: Architected materials with hierarchical structure can be effectively used in the design of devices that must guarantee large ductility and energy absorption capability. Some recent results on metamaterials constituted by Triply Periodic Minimal Surfaces are presented. Architected materials realized with continuous microstructure potentially present advantages with respect to traditional lattice architected materials.

• The stiffness and sensitivity to buckling of the resulting microstructure is improved with respect to lattice metamaterials.
• TPMS divide the space in two non-interconnected subspaces, that can be exploited for functional purposes.
• Several shapes are available, that can be combined for optimal design.
• Hierarchical designs can be obtained distorting the original shapes with continuity.

Hierarchical design of metamaterials made of TPMS can be accomplished by:
• Thickness Grading.
• Hybridization of TPMS-based materials.
• Cell size grading.

A hierarchical design can be obtained using homogenization procedures in the static and dynamic regime. To this end the dependency of the main material properties some geometrical characteristics of the shell lattice is investigated.

Case studies related to medical implants are presented and the design based on homogenization procedure is validated by comparison with detailed simulations

Keywords: TPMS, Architected materials, Hierarchical structure, homogenisation

Biography: Massimo Cuomo is a Full Professor of Mechanics of Solids and Structures, since October 2001. Presently he is the coordinator o f the PhD programme of National In terest Defense Against Natural Risks and Ecological Transition of the Built Environment, a joint programme between 22 Italian universities.

His more recent scientific activities are mainly related to the field of Computational Mechanics of materials and structures, to non-linear models of slender structures, to the analysis of damage and to the multiscale analysis of metamaterials also within the field of non-local behaviour.
He has been the scientific responsible of several Project of National Interest (PRIN) and of cooperation projects with European universities (Lyon, Paris Est, Helsinki, ...).

From 2008 to 2013 he has been the coordinator of the Italian Group of Computational Mechanics (GIMC and member of the General Assembly of ECCOMAS ( European Community on Computational Methods in Applied Sciences, and of the General Council of IACM (International Association of Computational Mechanics).