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

Engel, Alexander; Movahedi, Nima; Novak, Nejc; Jung, Anne

doi:10.1016/j.compositesa.2026.110179

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

Publication date

2026-08-13

Document type

Forschungsartikel

Author

Novak, Nejc

Organisational unit

DOI

10.1016/j.compositesa.2026.110179

URI

https://openhsu.ub.hsu-hh.de/handle/10.24405/24192

Publisher

Elsevier BV

Series or journal

Composites Part A: Applied Science and Manufacturing

ISSN

1359-835X

Periodical volume

211

Article ID

110179

Peer-reviewed

✅

Part of the university bibliography

✅

Language

English

Keyword

Metamaterials

Energy absorption

Additive manufacturing

Deformation mechanisms

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.

Description

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Version

Online first

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