Energy absorption characteristics of additively manufactured plate-lattices under low- velocity impact loading

Andrew, J. Jefferson; Schneider, Johannes; Ubaid, Jabir; Velmurugan, R.; Gupta, N.K.; Kumar, Sandeep

doi:10.1016/j.ijimpeng.2020.103768

Cited by 100 publications

(46 citation statements)

References 56 publications

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“…The criteria for damage initiation in the 3Dprinted ABS are based on Hashin's theory [54], which was originally developed for fibre-reinforced composite materials but can also be used for analysis of orthotropic materials [55] by using the definitions of the directions as described in Eqs. (5)(6)(7)(8).…”

Section: Essential Work Of Fracture Assessmentmentioning

confidence: 99%

“…Additive manufacturing (AM), commonly known as 3D printing, has attracted the interest of the academic and industrial research community because of its ability to fabricate objects with complex geometries at relatively low cost and with high flexibility [1][2][3][4][5][6][7][8][9]. It is an emerging technology where structures are printed layer by layer with the help of computer-aided design (CAD) models.…”

Section: Introductionmentioning

confidence: 99%

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Essential work of fracture assessment of acrylonitrile butadiene styrene (ABS) processed via fused filament fabrication additive manufacturing

Verma

Ubaid

Schiffer

et al. 2021

Int J Adv Manuf Technol

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Experiments and finite element (FE) calculations were performed to study the raster angle–dependent fracture behaviour of acrylonitrile butadiene styrene (ABS) thermoplastic processed via fused filament fabrication (FFF) additive manufacturing (AM). The fracture properties of 3D-printed ABS were characterized based on the concept of essential work of fracture (EWF), utilizing double-edge-notched tension (DENT) specimens considering rectilinear infill patterns with different raster angles (0°, 90° and + 45/− 45°). The measurements showed that the resistance to fracture initiation of 3D-printed ABS specimens is substantially higher for the printing direction perpendicular to the crack plane (0° raster angle) as compared to that of the samples wherein the printing direction is parallel to the crack (90° raster angle), reporting EWF values of 7.24 kJ m−2 and 3.61 kJ m−2, respectively. A relatively high EWF value was also reported for the specimens with + 45/− 45° raster angle (7.40 kJ m−2). Strain field analysis performed via digital image correlation showed that connected plastic zones existed in the ligaments of the DENT specimens prior to the onset of fracture, and this was corroborated by SEM fractography which showed that fracture proceeded by a ductile mechanism involving void growth and coalescence followed by drawing and ductile tearing of fibrils. It was further shown that the raster angle–dependent strength and fracture properties of 3D-printed ABS can be predicted with an acceptable accuracy by a relatively simple FE model considering the anisotropic elasticity and failure properties of FFF specimens. The findings of this study offer guidelines for fracture-resistant design of AM-enabled thermoplastics. Graphical abstract

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Section: Essential Work Of Fracture Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Essential work of fracture assessment of acrylonitrile butadiene styrene (ABS) processed via fused filament fabrication additive manufacturing

Verma

Ubaid

Schiffer

et al. 2021

Int J Adv Manuf Technol

Self Cite

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show abstract

“…However, a graded design with variations in relative density can significantly increase the stiffness and energy absorption capacity of lattices subjected to high compressive stresses. In [ 41 , 42 , 43 ], the authors also addressed the subject of changing the structure parameters, e.g., geometry, which affected the changes in the energy-intensive characteristics of the analysed structures.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of Selected Lattice Structures Developed with 3D Printing Technology

et al. 2022

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This paper presents the results of the experimental research of 3D structures developed with an SLA additive technique using Durable Resin V2. The aim of this paper is to evaluate and compare the compression curves, deformation process and energy-absorption parameters of the topologies with different characteristics. The structures were subjected to a quasi-static axial compression test. Five different topologies of lattice structures were studied and compared. In the initial stage of the research, the geometric accuracy of the printed structures was analysed through measurement of the diameter of the beam elements at several selected locations. Compression curves and the stress history at the minimum cross-section of each topology were determined. Energy absorption parameters, including absorbed energy (AE) and specific absorbed energy (SAE), were calculated from the compression curves. Based on the analysis of the photographic material, the failure mode was analysed, and the efficiency of the topologies was compared.

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“…Recently, three-dimensional network structures have been developed with interesting geometries derived from atomic crystal structures system [ 31 ]. The network of these lattice structures can be constructed with different structural members such as truss-, plate-, or shell-based (triply periodic minimal-surface (TPMS)) [ 32 , 33 ]. Out of these structural members, the plate-based lattice structures [ 34 , 35 ], offer superior stiffness which makes them excellent candidates for load-bearing applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Architected Structural Members on the Viscoelastic Response of 3D Printed Simple Cubic Lattice Structures

et al. 2022

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Three-dimensional printed polymeric lattice structures have recently gained interests in several engineering applications owing to their excellent properties such as low-density, energy absorption, strength-to-weight ratio, and damping performance. Three-dimensional (3D) lattice structure properties are governed by the topology of the microstructure and the base material that can be tailored to meet the application requirement. In this study, the effect of architected structural member geometry and base material on the viscoelastic response of 3D printed lattice structure has been investigated. The simple cubic lattice structures based on plate-, truss-, and shell-type structural members were used to describe the topology of the cellular solid. The proposed lattice structures were fabricated with two materials, i.e., PLA and ABS using the material extrusion (MEX) process. The quasi-static compression response of lattice structures was investigated, and mechanical properties were obtained. Then, the creep, relaxation and cyclic viscoelastic response of the lattice structure were characterized. Both material and topologies were observed to affect the mechanical properties and time-dependent behavior of lattice structure. Plate-based lattices were found to possess highest stiffness, while the highest viscoelastic behavior belongs to shell-based lattices. Among the studied lattice structures, we found that the plate-lattice is the best candidate to use as a creep-resistant LS and shell-based lattice is ideal for damping applications under quasi-static loading conditions. The proposed analysis approach is a step forward toward understanding the viscoelastic tolerance design of lattice structures.

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Energy absorption characteristics of additively manufactured plate-lattices under low- velocity impact loading

Cited by 100 publications

References 56 publications

Essential work of fracture assessment of acrylonitrile butadiene styrene (ABS) processed via fused filament fabrication additive manufacturing

Essential work of fracture assessment of acrylonitrile butadiene styrene (ABS) processed via fused filament fabrication additive manufacturing

Experimental Research of Selected Lattice Structures Developed with 3D Printing Technology

Effect of Architected Structural Members on the Viscoelastic Response of 3D Printed Simple Cubic Lattice Structures

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