20.500.12556/DKUM-99736 Combining strut-based and sheet-based lattices: Quasi-static and dynamic performance of auxetic hexa-chiral tubes filled with TPMS structures for enhanced energy absorption This study investigates a novel approach to combine the TPMS filler and hexa-chiral tube structures for quasi-static and dynamic loading. The TPMS structures are particularly prone as a tube filler for their excellent energy-absorbing properties, whilst the hexa-chiral lattice offers auxetic behavior, and enhanced stiffness. By integrating TPMS architectures into the core of hexa-chiral tubes, a hybrid design is created that leverages the strengths of both structural elements. Results demonstrate that the interaction between the two structures causes the TPMS filled hexa-chiral tubes to exhibit enhanced mechanical performance through a greater stiffness and energy absorption capacity compared to both individual structural components. Under quasi-static loading conditions, the mass-specific energy absorption of the TPMS filled hexa-chiral tubes increased by up to 104% compared to the standalone components, which was attributed to a synergistic interaction between the hexa-chiral tube and the TPMS filler. The TPMS filled tubes display advancing lateral expansion, suggesting that the TPMS structures are stronger than the tube under large plastic deformation. The same benefits could not be observed under dynamic loading, as embrittlement of the base material did not allow for sufficient structural deformation. metamaterials energy absorption additive manufacturing deformation mechanisms metamateriali absorpcija energije dodajalne tehnologije deformacijski mhanizmi true false true Elsevier Angleški jezik Slovenski jezik https://www.sciencedirect.com/science/article/pii/S1359835X26006263?via%3Dihub Članek v reviji 2026-08-25 14:13:55 2026-08-25 14:13:56 2026-08-26 03:09:52 0000-00-00 00:00:00 2026 0 0 15 str. Vol. 211, [article no.] 110179 Dec.2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-06-05 2026-08-07 2026-08-14 539.2:681.5 288657155 10.1016/j.compositesa.2026.110179 1878-5840 https://www.sciencedirect.com/science/article/pii/S1359835X26006263?via%3Dihub 1 723927b0-a07e-11f1-a977-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=210423 1-s2.0-S1359835X26006263-main.pdf 1-s2.0-S1359835X26006263-main.pdf 1 9D77457C633F15685643089B6EF94AC8 db9f659c7a53c7cdb301718a9ba186de1664a01303fdb6c2db77cba5af8edfe0 e0f55e7c-a07e-11f1-a977-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=210424 Fakulteta za strojništvo 0 0 0