Insight into the mechanical properties of 3D printed strut-based lattice structures

Ali, Hafiz Muhammad Asad; Abdi, Meisam; Sun, Yang

doi:10.1007/s40964-022-00365-9

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…A unit cell holds and defines all the characteristics and functionalities of the metamaterial when combined and arranged in a repetitive order in a spatial space. This arrangement of unit cells is called a lattice structure [2][3][4]. Metamaterial properties primarily depend upon the geometry of the unit cell rather than only relying on the building material from which it is fabricated from [2,5].…”

Section: Introductionmentioning

confidence: 99%

Design of a programmable particle filtering medium using a novel auxetic metamaterial

Ali

Abdi

Zahedi

et al. 2023

Smart Mater. Struct.

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This manuscript aims to design and develop a 2D auxetic filtering medium with programmable geometric features specifically designed to vary under in-plane tensile strain. This feature empowers the filtering medium to control the particles separation. A novel design and optimisation algorithm developed in Matlab® determines the final optimized geometry of the filtering medium based on the desired particle size input. Upon thorough numerical investigation, an empirical relationship between the linear elastic in-plane tensile strain and aperture size of the proposed metamaterial is revealed. This empirical relation can be used in mechatronic and control systems to steer the proposed filtering medium. A prototype of such filtering medium capable of classification of particles of size 4mm to 4.5mm, when subjected to linear strain, is fabricated through Fused Deposition Modelling (FDM) process. The developed geometry configurations in this research are scalable, providing a potential cost-effective and efficient solution for industrial applications including reconfigurable filtration and segregation systems.

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Section: Introductionmentioning

confidence: 99%

Design of a programmable particle filtering medium using a novel auxetic metamaterial

Ali

Abdi

Zahedi

et al. 2023

Smart Mater. Struct.

Self Cite

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“…Lattice structures are designed and manufactured to offer specific properties such as strength, shock absorption, acoustic or visual damping, heat transfer, and thermal insulation, thanks to their lightweight. With additive manufacturing, trusses are produced as lattice structures that provide building units with a predefined design [8]. The cellular unit structure significantly influences the mechanical behavior of truss constructions [9].…”

Section: Introductionmentioning

confidence: 99%

Optimizing printing parameters for enhanced mechanical properties of 3D printed PLA octet lattice structures

TUNÇEL

2023

EMS

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This study explores the impact of printing parameters on the mechanical properties of 3D printed octet lattice structures using PLA material. Focused on optimizing layer height, print speed, and infill density, the study employed Taguchi methodology. Compressive strength and strength per mass were the key metrics analyzed. The optimized parameters, determined as 0.2 mm layer height, 90 mm/s print speed, and 100% infill density, significantly enhanced compressive strength. Infill density emerged as the most influential factor, contributing to 82.74% of the overall variation. A robust predictive model was developed, achieving a 92.06% accuracy in estimating compressive strength per mass values. These findings provide crucial guidelines for manufacturing high-strength, lightweight PLA octet lattice structures, vital in industries like aerospace and automotive. This study advances additive manufacturing, opening avenues for further research in diverse lattice structures and materials.

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Insights into the flow characteristics during hydraulic fracturing

Abdi,

Krzaczek,

Abdi

2024

Comp. Part. Mech.

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This paper presents a numerical model to study fracture propagation during water-based hydraulic fracturing. To address the computational challenges associated with the numerical model, the proposed approach employs a set of overlapping spheres arranged in a monolayer to construct a porous specimen containing pre-existing cracks. The fluid-filled cracks represent various stages of initiation and propagation of fluid-driven fracture. The high-pressure fluid flow within the fractures is considered under isothermal conditions. Unlike the conventional focus on rock fracture analysis, the presented approach focuses on flow characteristics during fracture growth. The main objective of the presented study is to provide a detailed description of the computational fluid dynamics (CFD) aspects of fracture propagation during hydraulic fracturing to aid in calibration and validation of simplified discrete element method (DEM) models coupled with CFD representing this phenomenon. Experimental validations performed in previous studies support the model's reliability, making it useful in particular for calibration and validation of coupled 2D DEM-CFD models constructed from one layer of spheres. Obtaining experimental data for such cases is practically challenging, and the proposed model addresses the lack of reliable experimental data for hydraulic fracturing. To achieve this, representative specimens are designed, accurate simulations are conducted and precise assessments of the results are performed. Key variables such as density, pressure, velocity, porosity, and permeability were measured to facilitate the validation and calibration of future DEM-CFD studies.

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Insight into the mechanical properties of 3D printed strut-based lattice structures

Cited by 8 publications

References 29 publications

Design of a programmable particle filtering medium using a novel auxetic metamaterial

Design of a programmable particle filtering medium using a novel auxetic metamaterial

Optimizing printing parameters for enhanced mechanical properties of 3D printed PLA octet lattice structures

Insights into the flow characteristics during hydraulic fracturing

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