Performing comparative analysis on additive manufactured hybrid strut-based metamaterials on the basis of specific energy absorption

• Autorzy: Mishra Akshansh , Jatti Vijaykumar S. , Sawant Dhruv , Sefene Eyob Messele , Saiyathibrahim A. , Mohan Dhanesh G.

Identyfikatory

DOI

10.2478/adms-2025-0010

• Języki publikacji: EN

Abstrakty

EN

Architected metamaterials utilize unique geometries to enhance the mechanical and physical properties of structures. This study investigates the energy absorption capabilities of additively manufactured hybrid strut-based metamaterials, produced using Fused Deposition Modeling (FDM) with Polylactic Acid (PLA). Compression tests were conducted on six novel hybrid strut lattice designs to analyze their structure-property relationships. The designs integrated Kelvin cells, edge struts, octagonal shapes, hex trusses, face-centered components, and corner diagonal struts. The combination of "Kelvin Cell + Octagon" achieved excellent energy absorption efficiency, with the highest Specific Energy Absorption (SEA) of 1450 kJ/kg. Through the synergistic effect of octagonal geometry and Kelvin cell structure, controlled deformation and delayed buckling are realized to release the energy fully and maximize stress wave interaction. However, the configuration of the "Edge Struts + Hex Truss" configuration was not far away either, exhibiting an SEA of 1388.89 kJ/kg, owing to the effective load distribution provided by the hexagonal truss structure. Other configurations had much lower SEA values: 275 kJ/kg for "Kelvin Cell + Hex Truss" 185.71 kJ/kg for "Kelvin Cell + Edge Struts" 162.5 kJ/kg for "Edge Struts + Corner Diagonal" and 26.67 kJ/kg for "Edge Struts + Face Centre". Using microscopy to look at failed samples showed that shapes with hexagonal and octagonal parts increased SEA by making stress distribution more even and limiting deformation during compression. The unit cell geometry is the critical factor for deciding upon the energy absorption capacity of metamaterials. This work provides useful insights to design optimized additively manufactured metamaterials to achieve high energy absorption, which will be useful to applications such as automotive crash protection, aerospace components, personal protective equipment, and vibration damping systems. The "Kelvin Cell + Octagon" and "Edge Struts + Hex Truss" configurations emerge as highly effective designs, balancing strength, ductility, and energy absorption efficiency for advanced engineering applications.

Słowa kluczowe

EN

additive manufacturing; fused deposition modeling; hybrid metamaterials; polylactic acid; tensile strength

PL

produkcja addytywna; modelowanie osadzania stopionego; metamateriał hybrydowy; poliaktyd; wytrzymałość na rozciąganie

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2025
• Tom: Vol. 25, nr 2(84)
• Strony: 52--72
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr.

Twórcy

autor

Mishra Akshansh

• School of Industrial and Information Engineering, Politecnico Di Milano, Milan, Italy

autor

Jatti Vijaykumar S.

• Department of Mechanical Engineering, Bennett University, Noida, 201310, India

autor

Sawant Dhruv

• Symbiosis Institute of Technology, Symbiosis International (Deemed) University, Pune, India

autor

Sefene Eyob Messele

• Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei City, Taiwan

autor

Saiyathibrahim A.

• University Centre for Research and Development, Chandigarh University, 140413, Punjab, India

autor

Mohan Dhanesh G.

• Faculty of Technology, University of Sunderland, Sunderland SR1 3SD, United Kingdom
• Institute of Engineering and Technology, Chitkara University, 140401, Punjab, India

Bibliografia

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