Compressive Behaviour of Additively Manufactured Lattice Structures: A Review

Obadimu, Solomon O.; Kourousis, Kyriakos I.

doi:10.3390/aerospace8080207

Cited by 41 publications

(25 citation statements)

References 62 publications

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“…Multi-material fabrication poses new challenges in the design and fabrication of smart components [ 26 ]. Recent advancements in the field of design, modeling and simulation, fabrication, and testing of lattice structures can be found in the following review papers [ 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 ]. Deriving the effective properties of additively manufactured micro-lattice structures is an important tool in the hands of designers for performing fast simulations at a low computational cost [ 126 , 137 , 138 , 139 ].…”

Section: Design Considerationsmentioning

confidence: 99%

Design Aspects of Additive Manufacturing at Microscale: A Review

et al. 2022

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Additive manufacturing (AM) technology has been researched and developed for almost three decades. Microscale AM is one of the fastest-growing fields of research within the AM area. Considerable progress has been made in the development and commercialization of new and innovative microscale AM processes, as well as several practical applications in a variety of fields. However, there are still significant challenges that exist in terms of design, available materials, processes, and the ability to fabricate true three-dimensional structures and systems at a microscale. For instance, microscale AM fabrication technologies are associated with certain limitations and constraints due to the scale aspect, which may require the establishment and use of specialized design methodologies in order to overcome them. The aim of this paper is to review the main processes, materials, and applications of the current microscale AM technology, to present future research needs for this technology, and to discuss the need for the introduction of a design methodology. Thus, one of the primary concerns of the current paper is to present the design aspects describing the comparative advantages and AM limitations at the microscale, as well as the selection of processes and materials.

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Section: Design Considerationsmentioning

confidence: 99%

Design Aspects of Additive Manufacturing at Microscale: A Review

et al. 2022

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“…Since the force applied throughout the entire study was the maximum force that the driver can exert, it can be assumed that there would be lower force during the normal operation, thus, 1.3 to 1.5 safety factor calculated from the yield limit could be expected. However, it must be subject to additional tests for strength and fatigue tests keeping in mind the knowledge about the material properties of the 3D printed SS316L [23,27,28], and the lattice structures [29][30][31]. The non-symmetric cyclic loading naturally applied to the braking pedal could cause the accumulation of plastic deformation in the hot spot area for high levels of load.…”

Section: Optimization With Latticesmentioning

confidence: 99%

Restoration and Possible Upgrade of a Historical Motorcycle Part Using Powder Bed Fusion

Kudrna

Hajnyš

et al. 2022

Materials

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Reverse engineering is the process of creating a digital version of an existing part without any knowledge in advance about the design intent. Due to 3D printing, the reconstructed part can be rapidly fabricated for prototyping or even for practical usage. To showcase this combination, this study presents a workflow on how to restore a motorcycle braking pedal from material SS316L with the Powder Bed Fusion (PBF) technology. Firstly, the CAD model of the original braking pedal was created. Before the actual PBF printing, the braking pedal printing process was simulated to identify the possible imperfections. The printed braking pedal was then subjected to quality control in terms of the shape distortion from its CAD counterpart and strength assessments, conducted both numerically and physically. As a result, the exterior shape of the braking pedal was restored. Additionally, by means of material assessments and physical tests, it was able to prove that the restored pedal was fully functional. Finally, an approach was proposed to optimize the braking pedal with a lattice structure to utilize the advantages the PBF technology offers.

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“…Within the field of DfAM, there is a plethora of literature studying structural properties, several of these studies focus on the compliance aspect of employing lattice structures (Boley et al, 2019;Martínez et al, 2019;Nelson et al, 2016), aiming for lattice-based flexible structures. During the past few decades, the number of studies investigating lattice structures and their mechanical properties, both numerically and experimentally have increased significantly (Fleck et al, 2010;Karamooz Ravari et al, 2014;Karamooz Ravari & Kadkhodaei, 2015;Obadimu & Kourousis, 2021;Tancogne-Dejean et al, 2016;Wang et al, 2010;Xiao et al, 2015). However, none of these studies focus on their design while simultaneously considering the associated manufacturing constraints such as printing orientation-dependent-mechanical behaviour as seen in AM.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Among the most commonly studied and reported lattice topologies (Obadimu & Kourousis, 2021), three open-celled strut-based topologies were considered for compressive testing. Strutbased topologies can exhibit either stretching-dominated or bending-dominated behaviour where the latter kind of topologies demonstrate a compliant force-displacement behaviour (Alghamdi et al, 2020) which is desirable for the upholstery application.…”

Section: Lattice Topologies Selected For the Studymentioning

confidence: 99%

Effects of print orientation on the design of additively manufactured bio-based flexible lattice structures

Dash¹,

Nordin²

2022

How Product and Manufacturing Design Enable Sustainable Companies and Societies

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In upholstery applications, it is common to use polyurethane (PUR) foam when flexibility is desired. However, as PUR is a carbon-based material produced using toxic isocyanates, it is environmentally beneficial to replace PUR with bio-based alternatives. The challenge, however, lies in finding suitable bio-based replacement materials, capable of mimicking the foam-like functionality of PUR since many are stiff and brittle. Therefore, instead of relying on the inherent material property, this paper explores the possibility of producing flexible foamlike structures from bio-based materials with additive manufacturing (AM) employed as the manufacturing technique. As one of the key design constraints associated with AM is the intrinsic material anisotropy in the build direction, this paper focuses on the effects of print orientation on the compressive behaviour of structure which is indicative of flexibility. Three open-celled strut-based lattice structures are chosen for this purpose and the effect of these cell topologies on the compressive behaviour of structures is studied. The scope of this work includes structures printed using selective laser sintering (SLS) in a bio-based polyamide material (PA 1101). The results show that material failure and deformation behaviour are affected by print orientation, while the amount of plastic deformation is more influenced by the lattice cell topology.

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Compressive Behaviour of Additively Manufactured Lattice Structures: A Review

Cited by 41 publications

References 62 publications

Design Aspects of Additive Manufacturing at Microscale: A Review

Design Aspects of Additive Manufacturing at Microscale: A Review

Restoration and Possible Upgrade of a Historical Motorcycle Part Using Powder Bed Fusion

Effects of print orientation on the design of additively manufactured bio-based flexible lattice structures

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