About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Design and Additive Manufacturing Micro-lattice Structures for Mechanical Metamaterials |
Author(s) |
Keun Park, Minjung Ji, Jeong-Hee Yoo |
On-Site Speaker (Planned) |
Keun Park |
Abstract Scope |
Metamaterials represent artificially engineered micro-architectures aimed at demonstrating exceptional physical properties. Recent strides in additive manufacturing (AM) technology have significantly advanced the development of mechanical metamaterials, predominantly focusing on micro-lattice structures. In this study, we developed an efficient design methodology for boundary-conformal micro-lattice structures through isoparametric mapping, based on the finite element mesh information. Subsequently, these micro-lattice structures were harnessed for the design and fabrication of various mechanical metamaterials: (i) functionally-graded-lattice structures capable of extreme compliance variation were fabricated utilizing photo-polymerization type AM, employing photo-curable polyurethane resin; (ii) 3D chiral metamaterials exhibiting compression-twist behaviour were produced through photo-polymerization type AM, utilizing acrylic polyurethane resin; and (iii) thermal metamaterials characterized by high insulation and cooling capability were fabricated via powder-bed-fusion AM, employing SUS316 powders. These diverse applications underscore the versatility and practical utility of micro-architected mechanical metamaterials, showcasing their potential in the development of functional components beyond conventional limits. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |