Improved fracture resistance of 3D-printed elastoplastic structures with respect to their topology and orientation of deposited layers

Li, Pengfei; Yvonnet, Julien; Wu, Yi

doi:10.1016/j.ijmecsci.2022.107147

Cited by 10 publications

(3 citation statements)

References 80 publications

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“…Fused filament fabrication (FFF) 3D printing technology creates parts layer by layer. A consequence of layering is the presence of pores and heterogeneities that cause anisotropic behaviour and preferential crack orientation 25 . The resistance of parts to mechanical damage is dependent on the orientation of the deposited layers 26 – 28 .…”

Section: Methodsmentioning

confidence: 99%

3D printed laboratory equipment to measure bulk materials in extreme conditions

Diviš

Hlosta

Žurovec

et al. 2022

Sci Rep

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Due to relatively new solutions in the field of 3D printing, there are few studies on the possibility of using printed elements in measuring devices. The aim of this study was to investigate the possibility of using instruments made by material extrusion 3D printing method for measurement of selected mechanical-physical properties of bulk materials. Study explores the feasibility of measuring bulk material mechanical-physical properties when there are obstacles for printing original or modified measuring instruments in common practice. To achieve the goals a series of experiments such as Schulze’s ring shear tests, Freeman’s FT4 shear tests, compressibility tests, and Flow Rate and Stability tests were performed with use of original aluminium or steel made instruments and 3D printed instruments from polylactic acid and acrylic styrene acrylonitrile materials, using lunar regolith simulants LHS-1 and LMS-1 produced by CLASS Exolith Lab as a sample material. The results obtained from tests with original and printed instruments were then compared. The compared values of tests showed applicability of the 3D printed measuring instruments in a 5% range of measurement deviation. The biggest advantages of the 3D printed measuring instruments were the lower weight, the ability to print on the spot, to replace a damaged part with a new 3D printed part on-demand if extremely fast results are needed or due to the logistical unavailability, customization of the standardized tests for better understanding the behaviour of the particulate materials, and cheaper manufacturing costs.

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Section: Methodsmentioning

confidence: 99%

3D printed laboratory equipment to measure bulk materials in extreme conditions

Diviš

Hlosta

Žurovec

et al. 2022

Sci Rep

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“…All the above-mentioned works only considered static, quasi-brittle structures. In [165], Li et al developed a ductile fracture behavior combined within a BESO TO formulation. Another novelty of this work was the introduction of the anisotropy in the fracture behavior, to account for orientation in 3D printed fabrication process (see Figs.…”

Section: Single Materials Structuresmentioning

confidence: 99%

“…The topologies and fields are depicted for 3D printing orientations θ: (a) θ = 0 • ; (b) θ = 90 • ; θ = 120•. Reproduced from[165] with permission.…”

mentioning

confidence: 99%

Topology Optimization to Fracture Resistance: A Review and Recent Developments

Yvonnet,

2024

Arch Computat Methods Eng

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Topology Optimization (TO) methods for fracture resistance offer new possibilities for designing stronger structures or materials with lower masses than conventional designs. This article presents an overview of topology optimization techniques for fracture resistance, from pioneering works to the most recent developments at the time of writing. We first review stress-based methods, which were the forerunners of crack resistance methods, producing optimal designs that prevent any damage or crack initiation. Other works followed, taking into account the presence of defects or cracks in structures, but using classical approaches aimed at minimizing compliance in an elastic framework. TO methods for fatigue damage are also an important branch of these approaches and are reviewed. We then present more recent methodologies, including non-linear effects in structural design, such as plasticity and damage. Finally, we describe the latest methods of TO design for fracture resistance, including an explicit description of crack propagation during loading, from initiation to failure of structures and materials. In particular, the design of two-phase materials that are more resistant to cracking and that can be manufactured by 3D printing is discussed. The article concludes with some challenges and promising avenues for the coming years in this field.

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Topology optimization for energy absorption of quasi-brittle structures undergoing dynamic fractures

Wu,

Li,

et al. 2024

Advances in Engineering Software

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Improved fracture resistance of 3D-printed elastoplastic structures with respect to their topology and orientation of deposited layers

Cited by 10 publications

References 80 publications

3D printed laboratory equipment to measure bulk materials in extreme conditions

3D printed laboratory equipment to measure bulk materials in extreme conditions

Topology Optimization to Fracture Resistance: A Review and Recent Developments

Topology optimization for energy absorption of quasi-brittle structures undergoing dynamic fractures

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