| Title: | 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 |
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| Authors: | ID Engel, Alexander (Author)
ID Movahedi, Nima (Author)
ID Novak, Nejc (Author)
ID Jung, Anne (Author) |
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| Files: |  https://www.sciencedirect.com/science/article/pii/S1359835X26006263?via%3Dihub
 1-s2.0-S1359835X26006263-main.pdf (6,34 MB)
MD5: 9D77457C633F15685643089B6EF94AC8
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | 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. |
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| Keywords: | metamaterials, energy absorption, additive manufacturing, deformation mechanisms |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 05.06.2026 |
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| Article acceptance date: | 07.08.2026 |
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| Publication date: | 14.08.2026 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2026 |
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| Number of pages: | 15 str. |
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| Numbering: | Vol. 211, [article no.] 110179 |
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| PID: | 20.500.12556/DKUM-99736  |
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| UDC: | 539.2:681.5 |
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| ISSN on article: | 1878-5840 |
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| COBISS.SI-ID: | 288657155 |
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| DOI: | 10.1016/j.compositesa.2026.110179 |
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| Publication date in DKUM: | 25.08.2026 |
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| Views: | 234 |
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| Downloads: | 7 |
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| Metadata: |    |
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| Categories: | Misc.
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