On the correlation between static and dynamic mechanical properties in architected lattice materials
Metamaterials are multiscale architected structures with design inspired by nature, which can offer multifunctional properties that surpass those of conventional materials. The static and dynamic mechanical properties of architected materials have been extensively investigated, however, their interr...
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Elsevier
2025-08-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S026412752500735X |
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| author | Abdulla Alhembar Imad Barsoum Fabrizio Scarpa |
| author_facet | Abdulla Alhembar Imad Barsoum Fabrizio Scarpa |
| author_sort | Abdulla Alhembar |
| collection | DOAJ |
| description | Metamaterials are multiscale architected structures with design inspired by nature, which can offer multifunctional properties that surpass those of conventional materials. The static and dynamic mechanical properties of architected materials have been extensively investigated, however, their interrelationships are yet to be explored. This study correlates quasi-static and dynamic responses in 13 bio-inspired, topology-optimized, TPMS, plate- and truss-based lattices. Strong correlation between compressive modulus (Ec) and specific energy absorption (SEA) is found through experimental compression tests and low-velocity impact tests, supported by validated numerical modeling. For a subset of these lattices, the perforation limit (Vp) also exhibits a robust correlation between compressive modulus and SEA. Two in-house designs, the topology-optimized CompIED and the insect-elytra-inspired EBEP topologies achieve the highest Ec and the highest Vp simultaneously, demonstrating that the usual trade-off between stiffness and impact resistance can be overcome. A parametric study introduces the impactor-to-cell ratio (χ) metric which is defined as the impactor’s cross-sectional area divided by the square of the unit cell size. The perforation limit decreases exponentially for cell sizes above 2.5 mm (χ = 12.5) and stabilizes beyond 15 mm (χ = 1.4), implying that, beyond this point, larger unit cells do not contribute in augmenting the Vp as the improvement in impact stiffness diminishes. |
| format | Article |
| id | doaj-art-af6cbbd5f16b49ec9a98d7d1464b2909 |
| institution | Matheson Library |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
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| series | Materials & Design |
| spelling | doaj-art-af6cbbd5f16b49ec9a98d7d1464b29092025-07-02T04:49:25ZengElsevierMaterials & Design0264-12752025-08-01256114315On the correlation between static and dynamic mechanical properties in architected lattice materialsAbdulla Alhembar0Imad Barsoum1Fabrizio Scarpa2Department of Mechanical and Nuclear Engineering, College of Engineering and Physical Sciences, Khalifa University of Science and Technology, P.O Box 127788, Abu Dhabi, United Arab Emirates; Advanced Digital & Additive Manufacturing (ADAM) Group, Khalifa University of Science and Technology, P.O Box 127788, Abu Dhabi, United Arab EmiratesDepartment of Mechanical and Nuclear Engineering, College of Engineering and Physical Sciences, Khalifa University of Science and Technology, P.O Box 127788, Abu Dhabi, United Arab Emirates; Advanced Digital & Additive Manufacturing (ADAM) Group, Khalifa University of Science and Technology, P.O Box 127788, Abu Dhabi, United Arab Emirates; Department of Engineering Mechanics, Royal Institute of Technology – KTH, Teknikringen 8, 100 44 Stockholm, Sweden; Corresponding author at: Department of Mechanical and Nuclear Engineering, College of Engineering and Physical Sciences, Khalifa University of Science and Technology, P.O Box 127788, Abu Dhabi, United Arab Emirates.Bristol Composites Institute, School of Civil, Aerospace and Design Engineering (CADE), University of Bristol, Bristol BS8 1TR, UKMetamaterials are multiscale architected structures with design inspired by nature, which can offer multifunctional properties that surpass those of conventional materials. The static and dynamic mechanical properties of architected materials have been extensively investigated, however, their interrelationships are yet to be explored. This study correlates quasi-static and dynamic responses in 13 bio-inspired, topology-optimized, TPMS, plate- and truss-based lattices. Strong correlation between compressive modulus (Ec) and specific energy absorption (SEA) is found through experimental compression tests and low-velocity impact tests, supported by validated numerical modeling. For a subset of these lattices, the perforation limit (Vp) also exhibits a robust correlation between compressive modulus and SEA. Two in-house designs, the topology-optimized CompIED and the insect-elytra-inspired EBEP topologies achieve the highest Ec and the highest Vp simultaneously, demonstrating that the usual trade-off between stiffness and impact resistance can be overcome. A parametric study introduces the impactor-to-cell ratio (χ) metric which is defined as the impactor’s cross-sectional area divided by the square of the unit cell size. The perforation limit decreases exponentially for cell sizes above 2.5 mm (χ = 12.5) and stabilizes beyond 15 mm (χ = 1.4), implying that, beyond this point, larger unit cells do not contribute in augmenting the Vp as the improvement in impact stiffness diminishes.http://www.sciencedirect.com/science/article/pii/S026412752500735XLattice materialsImpact performanceBio-inspired designFinite element analysisEnergy absorptionMechanical testing |
| spellingShingle | Abdulla Alhembar Imad Barsoum Fabrizio Scarpa On the correlation between static and dynamic mechanical properties in architected lattice materials Materials & Design Lattice materials Impact performance Bio-inspired design Finite element analysis Energy absorption Mechanical testing |
| title | On the correlation between static and dynamic mechanical properties in architected lattice materials |
| title_full | On the correlation between static and dynamic mechanical properties in architected lattice materials |
| title_fullStr | On the correlation between static and dynamic mechanical properties in architected lattice materials |
| title_full_unstemmed | On the correlation between static and dynamic mechanical properties in architected lattice materials |
| title_short | On the correlation between static and dynamic mechanical properties in architected lattice materials |
| title_sort | on the correlation between static and dynamic mechanical properties in architected lattice materials |
| topic | Lattice materials Impact performance Bio-inspired design Finite element analysis Energy absorption Mechanical testing |
| url | http://www.sciencedirect.com/science/article/pii/S026412752500735X |
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