A novel 3D impact energy absorption structure with negative Poisson’s ratio and its application in aircraft crashworthiness

Wang, Tao; An, Junhan; He, Huan; Xin, Wen; Xi, Xulong

doi:10.1016/j.compstruct.2021.113663

Cited by 73 publications

(18 citation statements)

References 48 publications

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“…Finally, Figure 15d shows the fuselage sections with negative Poisson's ratio structure insert below the cargo floor studied by Wang et al [2021]. The author studied the use of these structures in the aircraft fuselage to assess the energy absorption capacity during a crash landing.…”

Section: Auxetic Structures Applied In Engineeringmentioning

confidence: 99%

Auxetic Structures: Parametric Optimization, Additive Manufacturing, and Applications

Francisco¹,

Pereira²,

Gomes³

2022

Fundamental Concepts and Models for the Direct Problem

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This chapter focuses on presenting some concepts about auxetic structures. These models are known to have a negative Poisson's ratio, making them have some improved properties over conventional structures. The auxetics can be constructed with auxetic materials or conventional ones if they adopted the appropriate configuration to generate this behavior. Some configurations (reentrant, double arrowhead, chiral and rotated squares) will be presented in this work and will also be shown the manufacture via 3D printing of auxetic models. The additive manufacturing is a process widely used in the manufacture of auxetics. The application and the optimization of some of these structures will be related. It is expected that at the end of the chapter, the reader will be familiar with auxetic structures.

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Section: Auxetic Structures Applied In Engineeringmentioning

confidence: 99%

Auxetic Structures: Parametric Optimization, Additive Manufacturing, and Applications

Francisco¹,

Pereira²,

Gomes³

2022

Fundamental Concepts and Models for the Direct Problem

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show abstract

“…Auxetics also can be called mechanical metamaterials. Auxetic metamaterials have the following improved mechanical properties: (a) in-plane indentation resistance 10,11 ; (b) shear resistance [12][13][14] ; (c) synclastic behavior 15,16 ; (d) energy absorption [17][18][19][20][21][22][23][24][25][26][27][28] ; (e) fracture toughness [29][30][31] ; (f) negative compliance [32][33][34] ; and (g) sound insulation. [35][36][37] A novel auxetic honeycomb was produced with enhanced inplane crushing strength.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of the 3D‐printed composite material in different raster orientations under thermal effects

Fan,

Lin,

Huang

et al. 2024

Polymer Engineering & Sci

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In this study, polylactic acid (PLA) and thermoplastic polyurethane (TPU) were used to fabricate composite materials with different raster orientations by a 3D printing process. The idea of this study came from the fact that in nature, many plants have vertical or horizontal lines on their leaves or branches. The authors made use of the composite material of a material structure under a thermal effect to achieve the material concept. Finally, their characteristics were observed by applying a thermal effect, tensile tests (to evaluate toughness), and a dynamic mechanical analysis (tan δ to evaluate energy absorption). After a thermal effect (temperature) from a heat source was applied, it was found that the material exhibited negative Poisson's ratio (NPR) characteristic. A single material with two layers on 00 raster orientation of a material in this study had the maximum tan δ (energy absorption), an NPR, and toughness regardless of the kind of material. Among the composite materials, 0° raster orientation of them also had a larger NPR, and the absolute value of Poisson's ratio decreased as the temperature increased.Highlights The innovative two‐layer composite material fabricated by 3D printing. The material characteristics with various raster orientations are discussed. PLA0 has the largest tan δ, toughness, and negative Poisson's ratio.

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“…Cellular material structures (such as honeycomb structure [ 1 , 2 ], sandwich structure [ 3 , 4 ], and lattice structure [ 5 , 6 , 7 ], i.e.,) are widely used in aerospace [ 8 ], automobile manufacturing [ 9 ], life science [ 10 , 11 ] and other fields due to lightweight [ 12 , 13 ] and high energy absorbing capacities [ 14 , 15 ]. The design of existing cellular structures is usually inspired by the natural topology structures in the world.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Al-Si10-Mg P-TPMS Structure Fabricated by Selective Laser Melting and a Unified Mathematical Model with Geometrical Parameter

Zhang

Xie

et al. 2023

Materials

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Compared with the traditional lattice structure, the triply periodic minimal surface (TPMS) structure can avoid stress concentration effectively. Here, it is promising in the fields of lightweight and energy absorption. However, the number of structural parameters and mechanical properties of the TPMS structure is plentiful, and the relationship between them is unclassified. In this paper, for the first time, a unified mathematical model was proposed to establish the relationship between TPMS structural design parameters and mechanical properties. Fifteen primitive models were designed by changing the structural parameters (level-set value C and thickness T) and manufacturing by selective laser melting. The geometric defects and surface quality of the structures were explored by optical microscope and scanning electron microscopy (SEM). The mechanical properties were investigated by quasi-static compression test and finite element simulation. The influence of building direction on structural mechanical behavior (failure mode, stress-strain curve) was studied. The real mechanical properties (Young’s modulus and plateau stress) of the structure could be predicted according to different C and T combinations. Finally, the energy absorption characteristics were explored. The results showed that when the C value is 0.6 in the range of 0–0.6, the energy absorption performance of the structure is at the maximum level.

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A novel 3D impact energy absorption structure with negative Poisson’s ratio and its application in aircraft crashworthiness

Cited by 73 publications

References 48 publications

Auxetic Structures: Parametric Optimization, Additive Manufacturing, and Applications

Auxetic Structures: Parametric Optimization, Additive Manufacturing, and Applications

Characteristics of the 3D‐printed composite material in different raster orientations under thermal effects

Mechanical Behavior of Al-Si10-Mg P-TPMS Structure Fabricated by Selective Laser Melting and a Unified Mathematical Model with Geometrical Parameter

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