A novel nature inspired 3D open lattice structure for specific energy absorption

Energy absorption is a key performance criterion for several engineering structures. Lightweight lattice structures are better suited for this purpose. The convolute design patterns that exist in nature are proven effective for several engineering applications. In this paper, a George lily flower le...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part E, Journal of process mechanical engineering Journal of process mechanical engineering, 2022-12, Vol.236 (6), p.2434-2440
Main Authors: Ashok, Dara, Raju Bahubalendruni, M. V. A., Johnney Mertens, A., Balamurali, Gunji
Format: Article
Language:English
Subjects:
Compression tests
Energy absorption
Photopolymerization
Specific energy
Thin wall structures
Three dimensional printing
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Summary:Energy absorption is a key performance criterion for several engineering structures. Lightweight lattice structures are better suited for this purpose. The convolute design patterns that exist in nature are proven effective for several engineering applications. In this paper, a George lily flower leaf is considered to build a novel 3D open lattice pattern for specific energy absorption (SEA) purposes. A multi-cellular specimen is designed and fabricated using Vat photopolymerization 3D printing process. Quasi-static compression tests have been conducted and the performance of proposed structure is compared with 2.5D closed thin-walled structures and found the proposed 3D open lattice structure has shown significant improvement in SEA over other thin-walled structures.
ISSN:0954-4089
2041-3009
DOI:10.1177/09544089221092894