Dynamic compressive response of additively manufactured AlSi10Mg alloy hierarchical honeycomb structures

Zhang, Yuwu; Liu, Tao; Ren, Huan; Maskery, Ian; Ashcroft, Ian

doi:10.1016/j.compstruct.2018.04.021

Cited by 75 publications

(18 citation statements)

References 27 publications

(40 reference statements)

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“…It has been observed that the crush strength depends on cell shape (hexagonal cells with different branch angles were studied) [18,19,20,21,22] and wall thickness [23,24,25,26]. The honeycomb structures were investigated with numerical analysis or experimentally in both in-plane [27,28,29,30,31] and out-of-plane directions [20,32,33,34,35,36] to obtain various parameters to provide answers about the mechanisms of failure.…”

Section: Introductionmentioning

confidence: 99%

Static and Dynamic Loading Behavior of Ti6Al4V Honeycomb Structures Manufactured by Laser Engineered Net Shaping (LENSTM) Technology

et al. 2019

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Laser Engineered Net Shaping (LENSTM) is currently a promising and developing technique. It allows for shortening the time between the design stage and the manufacturing process. LENS is an alternative to classic metal manufacturing methods, such as casting and plastic working. Moreover, it enables the production of finished spatial structures using different types of metallic powders as starting materials. Using this technology, thin-walled honeycomb structures with four different cell sizes were obtained. The technological parameters of the manufacturing process were selected experimentally, and the initial powder was a spherical Ti6Al4V powder with a particle size of 45–105 µm. The dimensions of the specimens were approximately 40 × 40 × 10 mm, and the wall thickness was approximately 0.7 mm. The geometrical quality and the surface roughness of the manufactured structures were investigated. Due to the high cooling rates occurring during the LENS process, the microstructure for this alloy consists only of the martensitic α’ phase. In order to increase the mechanical parameters, it was necessary to apply post processing heat treatment leading to the creation of a two-phase α + β structure. The main aim of this investigation was to study the energy absorption of additively manufactured regular cellular structures with a honeycomb topology under static and dynamic loading conditions.

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Section: Introductionmentioning

confidence: 99%

Static and Dynamic Loading Behavior of Ti6Al4V Honeycomb Structures Manufactured by Laser Engineered Net Shaping (LENSTM) Technology

et al. 2019

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“…The loaddisplacement curves were recorded by the test machine and the expansion process was recorded by a camera. To assess the local strain of the tube, digital image correlation (DIC) technology was used and speckles were sprayed on the tube surface [20,29,30]. 8(a), the expanded end of the tube rebounds to its mandrel, which is the same as that in numerical simulation.…”

Section: Finite Element Simulationmentioning

confidence: 99%

Effect of Structural Parameters and Materials on the Mechanical Characteristics of Expansion Tube

Qi¹,

Zhang²,

Lin³

2020

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Expansion tube is ideal energy absorber which dissipates kinetic energy through plastic deformation and friction. There is an urgent need to understand the influence of key parameter, e.g. semi angle, tube material, and friction coefficient, on the mechanical response and energy absorption characteristics of expansion tube. In the present work, the material properties of the tubes were tested under quasi-static loading condition, and the numerical simulations were carried out by using commercial software ABAQUS. Based on the validated finite element simulation, all the semi angle, tube material, and friction have significant effects on the energy absorption capacity of expansion tube. The expansion tube with high tensile stress of parent material have high energy absorption capacity, while the specific energy absorption is linear with the tensile stress/density of tube material. This work would give a guidance to the structural design and parent materials selection for expansion tubes.

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“…They deduced the theoretical value of the failure stress from the deformation mode, verified and analyzed it with a finite element, and analyzed the influence of both different impact velocities and the number of substructures on the failure stress [ 22 ]. Additional studies on hierarchical honeycombs have added substructures such as squares, hexagons, and kagomes [ 23 , 24 , 25 , 26 , 27 , 28 ]. H. L. Tan et al added triangular subunits into concave hexagons and obtained excellent mechanical properties [ 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

A New Type of Hierarchical Honeycomb in-Plane Impact Study

et al. 2021

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Honeycomb materials have low density, high specific strength and stiffness, impact resistance, and good sound insulation effect, and therefore are widely used in aerospace, automobile, and ship field applications. In this paper, we study the in-plane impact response of a second-order hierarchical honeycomb (SHH) material. Its main structure is a hexagonal honeycomb, and the substructure is composed of an augmented double arrow honeycomb (ADAH) negative Poisson’s ratio unit. Through a finite element simulation, the failure stress of an hierarchical honeycomb in two directions of quasi-static crushing and dynamic crushing was analyzed; the failure stress of the hierarchical honeycomb under different densities, different speeds, and different substructures was discussed; and the theoretical failure stress was verified. The numerical analysis results show that a second-order hierarchical honeycomb (SHH) has better collapse stress than a first-order regular hexagonal honeycomb (FHH) and an augmented double arrow honeycomb (ADAH).

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Dynamic compressive response of additively manufactured AlSi10Mg alloy hierarchical honeycomb structures

Cited by 75 publications

References 27 publications

Static and Dynamic Loading Behavior of Ti6Al4V Honeycomb Structures Manufactured by Laser Engineered Net Shaping (LENSTM) Technology

Static and Dynamic Loading Behavior of Ti6Al4V Honeycomb Structures Manufactured by Laser Engineered Net Shaping (LENSTM) Technology

Effect of Structural Parameters and Materials on the Mechanical Characteristics of Expansion Tube

A New Type of Hierarchical Honeycomb in-Plane Impact Study

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