Optimizing 3D printed diamond lattice structure and investigating the influence of process parameters on their mechanical integrity using nature-inspired machine learning algorithms

Materials Today Communications, Journal Year: 2024, Volume and Issue: 38, P. 108233 - 108233

Published: Jan. 29, 2024

Language: Английский

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3D Printing of Flexible Mechanical Metamaterials: Synergistic Design of Process and Geometric Parameters

Polymers, Journal Year: 2023, Volume and Issue: 15(23), P. 4523 - 4523

Published: Nov. 24, 2023

Mechanical metamaterials with ultralight and ultrastrong mechanical properties are extensively employed in various industrial sectors, three-periodic minimal surface (TPMS) structures gaining significant research attention due to their symmetry, equation-driven characteristics, exceptional properties. Compared traditional lattice structures, TPMS exhibit superior performance. The of depend on the base material, structural porosity (volume fraction), wall thickness. Hard rigid such as Gyroid, diamond, primitive outstanding performance terms elastic modulus, energy absorption, heat dissipation, transfer. Flexible other hand, offer higher elasticity recoverable large deformations, drawing for use applications seat cushions helmet impact-absorbing layers. Conventional fabrication methods often fail guarantee quality structure samples, additive manufacturing technology provides a new avenue. Selective laser sintering (SLS) has successfully been used process materials. However, layer-by-layer process, it cannot eliminate anisotropy caused by interlayer bonding, which impacts 3D-printed parts. This paper introduces data-driven optimization design approach geometry adjusting volume fraction gradients overcome isotropic structures. Experimental validation analysis conducted using fabricated TPU material via SLS. Furthermore, advantages gradient-designed functions absorption dissipation explored.

Language: Английский

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Hybrid 3D printing of fluid-filled lattices for biomedical applications: a review

The International Journal of Advanced Manufacturing Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Language: Английский

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Novel Dual Curved Cubic (DCC) structure with improved compressive strength

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110186 - 110186

Published: April 1, 2025

Language: Английский

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Synergistic reinforcement design and failure behaviors of 3D-printed lattice structures with stable failure mechanism

Mechanics of Advanced Materials and Structures, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 18

Published: April 26, 2025

Language: Английский

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The effect of marine environment and carbon fibers reinforcement on compressive strength of the various design of PLA 3D-printed porous lattice structures

Progress in Additive Manufacturing, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Language: Английский

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Shear-thickening-fluid-based meta-material for adaptive impact response

Materials & Design, Journal Year: 2024, Volume and Issue: 244, P. 113174 - 113174

Published: July 23, 2024

Lattice and Triply-Periodic-Minimal-Surface (TPMS) structures are widely employed in different engineering disciplines, combining interesting designs with optimal mechanical properties thanks to the capabilities of Additive Manufacturing. In this framework, a technique based on filling 3D-printed flexible structure shear-thickening fluid (STF) is proposed improve response resulting bi-phase composite under impact loads low-velocity regime up around 3 m/s. Test data indicate that once critical shear rate threshold for reached, STF-filled can effectively smooth peak acceleration by 50%, decrease penetration depth significantly enhance energy absorption capability remarkable 85%. The hybrid paves way novel functional applications, exploiting adaptive behavior non-Newtonian fillers. To end, Finite-Element model further investigate optimize underlying fluid-structure interaction responsible improvement dynamic compressive response.

Language: Английский

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Improving the compressive response of bio-polymeric additively manufactured cellular structures via foam-filling: An experimental and numerical investigation

Mechanics of Advanced Materials and Structures, Journal Year: 2023, Volume and Issue: 31(25), P. 7486 - 7497

Published: Aug. 12, 2023

AbstractAdditive Manufacturing is effective at addressing advanced innovative design requirements for functional applications. Lattice structures and lightweight composites are the result of engineering designs enhanced mechanical structural properties. Inspired by nature, this work investigates static cyclic compressive response 3D-printed Triply-Periodic-Minimal-Surface cellular made Poly-(Butylene-Adipate-co-Terephthalate) (PBAT) biopolymer functionalized with Poly-Urethane foam. The plateau stress hybrid structure 30% higher specific energy absorption capability 18% than empty due to interaction between two phases. A finite-element model developed as a supporting tool analyze, predict, optimize behavior, well improve understanding deformation mechanisms. In addition, PBAT proves be ideal candidate greener manufacturing, combining good properties biodegradability, paving way range new applications.Keywords: Cellular structuresenergy absorptionFDM additive manufacturingmulti-phase metamaterialsfoam-filling Additional informationFundingThis in framework Project funded under National Recovery Resilience Plan (NRRP), Mission 4 Component 2 Investment 1.5 - Call tender No. 3277 30/12/2021 Italian Ministry University Research European Union – NextGenerationEU Award Number: code ECS00000033, Concession Decree 1052 23/06/2022 adopted of, CUP D93C22000460001, "Ecosystem Sustainable Transition Emilia-Romagna" (Ecosister).

Language: Английский

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Research on Auxetic Lattice Structure for Impact Absorption in Machines and Mechanisms

Mathematics, Journal Year: 2024, Volume and Issue: 12(13), P. 1983 - 1983

Published: June 27, 2024

In this paper, a new type of filled doubly re-entrant auxetic lattice structure for application in damping and energy absorption devices is considered. The modeled to give protection machines mechanisms intensive impact. suggested the modified version one with silicone fillings. unit assumed as hexagon four quadrangular absorbers. For model unit, deformation properties Poisson’s ratio were computed. obtained results experimentally tested. Specimens unfilled structures investigated under quasi-static compression. measured show that dissipation more than two times higher ones. structure, absorber’s rigidity has crucial role. If small, absorber, inside continues deform from rectangle into rhomboid. Otherwise, if high, units absorbers form beam-like buckles shows high effect. are good agreement theoretical

Language: Английский

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Experimental study on the improvement of bamboo properties using amide polymer repair material based on the principle of self-energy dissipation

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 450, P. 138565 - 138565

Published: Oct. 9, 2024

Language: Английский

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