Impact of polyurethane (PU) infill on the energy absorption efficiency of 3D-printed metallic Menger fractal structures

•Novel PU-infilled Menger fractal cubes (MFC) are proposed for high energy absorption structures.•Higher-order PU-infilled MFCs showed ideal energy absorption with two plateau regions.•All-order PU-infilled MFCs demonstrated higher specific energy absorption (45–50 J/g).•Finite Element models predic...

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Bibliographic Details
Published in:Thin-walled structures 2026-01, Vol.218, p.114045, Article 114045
Main Authors: Bogahawaththa, Madhusha, Mohotti, Damith, Wijesooriya, Kasun, Lee, Chi King
Format: Article
Language:English
Subjects:
3D printing
Composite structure
Energy absorption
Finite element modelling
Polyurethane
Quasistatic test
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