Additively manufactured plate lattice interpenetrating composites with high yield strength and energy absorbing capacity

Wang, Xiaobo, Song, Bo, Zhu, Hanxing ORCID: https://orcid.org/0000-0002-3209-6831, Zhang, Zhi, Zhang, Lei and Shi, Yusheng 2025. Additively manufactured plate lattice interpenetrating composites with high yield strength and energy absorbing capacity. Composite Structures 353 , 118709. Item availability restricted.

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Abstract

Mechanical metamaterials with plate lattice architectures have been proven to possess specific stiffness and strength superior to that of traditional truss lattice structures. Current research mainly focuses on the mechanical properties of plate lattice skeletons, leaving interpenetrating composites with plate lattice architectures unexplored. In this work, plate lattice interpenetrating composites have been prepared by filling epoxy resin matrix to additively manufactured stainless steel plate lattice skeletons. By conducting uniaxial quasi-static compression tests and performing finite element analysis, mechanical performance and deformation patterns of plate lattice interpenetrating composites have been revealed. Results show that Young’s modulus and yield strength of plate lattice skeletons can be greatly enhanced by introducing an epoxy resin matrix to form interpenetrating composites. In addition, interpenetrating composites have been observed to deform stably without shear damage or fracture, facilitating the increase of energy-absorbing capability. Specific energy absorption of interpenetrating composites is up to three times higher than that of corresponding pure skeletons, which could extend the potentials of plate lattice metamaterials in energy-absorbing applications.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	0263-8223
Date of First Compliant Deposit:	25 November 2024
Date of Acceptance:	12 November 2024
Last Modified:	02 Dec 2024 10:15
URI:	https://orca.cardiff.ac.uk/id/eprint/174298

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