Mechanical Properties of 3D-Printed Lattice Cylindrical Structure with Recyclable Elastomeric and Thermoplastic Polymers

Sood, Mohit; Wu, Chang-Mou; Yang, Yun-Cheng

doi:10.1007/s10924-024-03203-x

Cited by 3 publications

(1 citation statement)

References 64 publications

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“…Sood et al [112] studied the effect of material and lattice cells on static and dynamic mechanical properties of lattice cylinders from polylactic acid (PLA) and polyester elastomer (TPEE). They used the material extrusion (MEX) 3D-printing method.…”

Section: Polymers and Elastomersmentioning

confidence: 99%

Crystal-Inspired Cellular Metamaterials and Triply Periodic Minimal Surfaces

Arsentev,

Topalov,

Balabanov

et al. 2024

Biomimetics

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Triply periodic minimal surfaces (TPMSs) are found in many natural objects including butterfly wings, sea urchins, and biological membranes. They simultaneously have zero mean curvature at every point and a crystallographic group symmetry. A metamaterial can be created from such periodic surfaces or used as a reinforcement of a composite material. While a TPMS as a mathematical object has been known since 1865, only novel additive manufacturing (AM) technology made it possible to fabricate cellular materials with complex TPMS shapes. Cellular TPMS-based metamaterials have remarkable properties related to wetting/liquid penetration, shock absorption, and the absence of stress concentrators. Recent studies showed that TPMSs are also found in natural crystals when electron surfaces are considered. Artificial crystal-inspired metamaterials mimic such crystals including zeolites and schwarzites. These metamaterials are used for shock, acoustic waves, and vibration absorption, and as structural materials, heat exchangers, and for other applications. The choice of the crystalline cell of a material, as well as its microstructure, plays a decisive role in its properties. The new area of crystal-inspired materials has many common features with traditional biomimetics with models being borrowed from nature and adjusted for engineering applications.

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Section: Polymers and Elastomersmentioning

confidence: 99%

Crystal-Inspired Cellular Metamaterials and Triply Periodic Minimal Surfaces

Arsentev,

Topalov,

Balabanov

et al. 2024

Biomimetics

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Bio‐Inspired Graded and Uniform Cylindrical Lattices Fabricated by Material Extrusion 3D Printing: An Experimental and Numerical Investigation

Oymak,

Bahce,

Singh

2024

J of Applied Polymer Sci

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The main requirements of the biomedical and aerospace industries are new and innovative lightweight materials. Bio‐inspired structures, which are inspired by various biological designs, have demonstrated notable advancements over traditional lightweight structures. In this study, bioinspired uniform and graded cylindrical triply periodic minimal surface (TPMS) and strut‐based lattice structures were studied for their mechanical qualities and energy absorption capacities fabricated by material extrusion 3D printing using PLA material. It was found that the cylindrical TPMS diamond lattice achieved maximum stress of 78.5 MPa and absorbed 19.14 MJ/m3 of energy, outperforming strut‐based designs with a 48% higher energy absorption than cylindrical BCC lattice structure. Graded designs further improve energy absorption through a better stress distribution. The findings validated the Gibson–Ashby model, highlighting the enhanced load distribution and stress transfer in the strut‐based and TPMS diamond structures. The finite element (FE) model results closely matched the experimental data, confirming its predictive reliability with a maximum error of energy absorption of 7.7%, elastic modulus of 6.9%, and plateau stress of 4.7%. These insights underscore the superior energy absorption and mechanical stability of cylindrical TPMS diamond lattices, indicating their potential for satisfying stringent industrial and technical performance requirements. The novelty of these designs lies in their bioinspired structures and significant enhancements in mechanical performance and energy absorption. Future research should build on these results to design efficient materials tailored to specific needs using FE models to optimize development processes before experimental testing.

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