Modelling, and characterization of 3D printed cellular structures

Kucewicz, Michał; Baranowski, Paweł; Małachowski, Jerzy; Popławski, Arkadiusz; Płatek, Paweł

doi:10.1016/j.matdes.2018.01.028

Cited by 155 publications

(77 citation statements)

References 46 publications

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“…One of the key issues referring to the investigations of regular cellular material is the definition of the relationship between structure topology and its mechanical response in terms of energy absorption [20][21][22][23]. This issue attracts the attention of many research groups and has become an object of extensive studies carried out with the use of experimental [24,25] and numerical approaches [26][27][28]. Their results show that both cell topology and mechanical properties of used material strongly influence the mechanical behavior of cellular structures [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Investigations on the Mechanical Response of Gradient Lattice Structures Manufactured via SLM

Sienkiewicz

Płatek

Jiang

et al. 2020

Metals

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The main aim of the paper is to evaluate the mechanical behavior or lattice specimens subjected to quasi-static and dynamic compression tests. Both regular and three different variants of SS 316L lattice structures with gradually changed topologies (discrete, increase and decrease) have been successfully designed and additively manufactured with the use of the selective laser melting technique. The fabricated structures were subjected to geometrical quality control, microstructure analysis, phase characterization and compression tests under quasi-static and dynamic loading conditions. The mismatch between dimensions in the designed and produced lattices was noticed. It generally results from the adopted technique of the manufacturing process. The microstructure and phase composition were in good agreement with typical ones after the additive manufacturing of stainless steel. Moreover, the relationship between the structure relative density and its energy absorption capacity has been defined. The value of the maximum deformation energy depends on the adopted gradient topology and reaches the highest value for a gradually decreased topology, which also indicates the highest relative density. However, the highest rate of densification was observed for a gradually increasing topology. In addition, the results show that the gradient topology of the lattice structure affects the global deformation under the loading. Both, static and dynamic loading resulted in both barrel- and waisted-shaped deformation for lattices with an increasing and a decreasing gradient, respectively. Lattice specimens with a gradually changed topology indicate specific mechanical properties, which make them attractive in terms of energy absorption applications.

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Section: Introductionmentioning

confidence: 99%

Investigations on the Mechanical Response of Gradient Lattice Structures Manufactured via SLM

Sienkiewicz

Płatek

Jiang

et al. 2020

Metals

Self Cite

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“…The use of structures at three different levels (micro, meso and macro structures) have been proposed in the literature in order to optimize the design and performance of AM components [26,[82][83][84][85][86][87]. The performance is commonly defined in terms of the design requirements, such as weight, stiffness, strength, compliance,…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Design and Manufacturing Strategies for Fused Deposition Modelling in Additive Manufacturing: A Review

Medellín-Castillo

Zaragoza-Siqueiros

2019

Chin. J. Mech. Eng.

105

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Although several research works in the literature have focused on studying the capabilities of additive manufacturing (AM) systems, few works have addressed the development of Design for Additive Manufacturing (DfAM) knowledge, tools, rules, and methodologies, which has limited the penetration and impact of AM in industry. In this paper a comprehensive review of design and manufacturing strategies for Fused Deposition Modelling (FDM) is presented. Consequently, several DfAM strategies are proposed and analysed based on existing research works and the operation principles, materials, capabilities and limitations of the FDM process. These strategies have been divided into four main groups: geometry, quality, materials and sustainability. The implementation and practicality of the proposed DfAM is illustrated by three case studies. The new proposed DfAM strategies are intended to assist designers and manufacturers when making decisions to satisfy functional needs, while ensuring manufacturability in FDM systems. Moreover, many of these strategies can be applied or extended to other AM processes besides FDM.

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“…Earlier solutions were based on a shell (a body) made of suitable steel. In the first half of the twentieth century, after the first fiber composites had been developed, helmet shells started to be constructed using modern materials solutions [12][13][14][15][16][17][18]. Modern structures largely reflect existing knowledge, not only in the sense of physical analyses but also in the search for mathematical models through which biomechanical issues can be explored [19].…”

Section: Specificationmentioning

confidence: 99%

Ballistic Head Protection in the Light of Injury Criteria in the Case of the Wz.93 Combat Helmet

et al. 2019

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This paper discusses the general conditions relating to ballistic head protection, analyzing the risks that may occur on contemporary battlefields. A thorough literature review has enabled us to present development trends for helmets used in the largest armies in the world. The authors have focused on impacts to the helmet shell, overloading the entire helmet-protected head–neck system. The main objective of this study is to investigate the protective capability of a helmet shell when subjected to projectile–helmet contact, with contact curvature taken as being an indicator of the impact energy concentration. Blunt head trauma was estimated using backface deformation (BFD). The Wz.93 combat helmet was used for testing. Analytically, dependencies were derived to determine the scope of BFD. A five-parameter model of the helmet piercing process was adopted, thus obtaining the optimal BFD range. Verification of theoretical considerations was carried out on a specially developed research stand. In the ballistic tests, dynamic deflection of the helmet’s body was registered using a speed camera. On the impact testing stand, a fragment of the helmet was pierced, producing results in the low impact velocity range. Data have been presented on the appropriate graph in order to compare them with values specified in the relevant standard and existing literature. Our results correlate well with the norm and literature values.

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Modelling, and characterization of 3D printed cellular structures

Cited by 155 publications

References 46 publications

Investigations on the Mechanical Response of Gradient Lattice Structures Manufactured via SLM

Investigations on the Mechanical Response of Gradient Lattice Structures Manufactured via SLM

Design and Manufacturing Strategies for Fused Deposition Modelling in Additive Manufacturing: A Review

Ballistic Head Protection in the Light of Injury Criteria in the Case of the Wz.93 Combat Helmet

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