Mechanical performance and energy absorption properties of structures combining two Nomex honeycombs

Zhou, Hui; Xu, Ping; Xie, Suchao; Feng, Zhijun; Wang, Da

doi:10.1016/j.compstruct.2017.11.059

Cited by 54 publications

(27 citation statements)

References 34 publications

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“…With the higher requirements of the engineering technology for industrial production in the modern society, more and more attention has been paid to the research of cushioning and energyabsorbing materials. Porous metal has been applied to various fields as a new structural functional material due to its excellent cushioning, energy absorption, thermal conductivity, flow isolation, and silencing properties (Li et al, 2018;Zhou et al, 2018;Wang et al, 2019). Due to the special structural composition of porous materials, they can be divided into two dimensional porous materials (honeycomb structure) and three dimensional porous materials (foam structure).…”

Section: Introductionmentioning

confidence: 99%

Impact Dynamic Behavior and Deformation Mode of a Lightweight-Coated Honeycomb Steel Structure

et al. 2022

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Honeycomb materials have attracted people’s attention because of their light weight, high specific strength, high specific stiffness, and excellent impact resistance and energy absorption. At present, the specific materials have been widely used in aerospace, transportation, mechanical construction, energy, and chemical industry. The mechanical properties of honeycomb steel with special coating under quasi-static and dynamic compression were studied by using the universal strength testing machine (TAWD-2000) and split Hopkinson pressure bar (SHPB) devices. The results showed that the stress–strain curves obtained from the quasi-static compression experiment showed the characteristics of three typical deformation stages of porous materials: the elastic deformation stage, stress platform stage, and densification stage. Due to the fact that the loading time of the dynamic compression experiment is very short and because of the effect of the sample’s height, there was no densification stage in the stress–strain curves under dynamic loading. The dynamic compression deformation process of the samples was captured by the high-speed photography equipment, and its different deformations and failure modes were analyzed in combination with the characteristics of stress–strain curves. The increasing relationship between the peak stress and strain rate showed the strain rate sensitivity of the honeycomb structure. The dynamic energy absorption characteristics of honeycomb materials were described and analyzed by using the dynamic energy absorption capacity and dynamic energy absorption efficiency. By using finite element simulation software, the same structure of the honeycomb steel was modeled and analyzed to explore the causes of dynamic compression failure. Because of its special mechanical properties and failure modes, this honeycomb structure material will have a broader research and application prospect in the future.

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Section: Introductionmentioning

confidence: 99%

Impact Dynamic Behavior and Deformation Mode of a Lightweight-Coated Honeycomb Steel Structure

et al. 2022

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“…In the report by Li et al [24], the out-of-plane compression response of two types of tandem aluminum honeycomb was compared, and the results provided a new option for optimal buffer energy-absorbing structure design. The mechanical performance and energy absorption of two-layer Nomex honeycombs of different types were discussed by Zhou et al [25], and two-layer honeycomb structures with different honeycomb specifications could be used to control the deformation sequence and energy levels. Wang et al [26] investigated the mechanical behavior of a composite tube filled with tandem honeycombs, and found that the tandem honeycomb structure exhibited better mechanical performance; moreover, the structure after precompression showed a more stable compression history than a single honeycomb, the results suggested that lateral resistance has an important influence on the deformation mode; hence, filling multi-cell tubes with tandem honeycombs was proposed to improve the mechanical behavior of such structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of dislocation and layer height on the compression performance of tandem honeycombs

Zhang

Weng

Liu

2021

Jnl of Sandwich Structures & Materials

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In this study, the compression mechanical response of tandem honeycomb cores was investigated to determine the effect of dislocation length and layer height on the compression resistance of tandem honeycomb. A series of flatwise compressive tests were carried out on single-layer and double-layer honeycombs, which showed that tandem honeycomb obtains higher equivalent elastic modulus and collapse stress, and the core assembled with dislocation can achieve almost the same collapse stress with the aligned assembled honeycombs. In addition, a mesoscale finite element modeling method was developed and used to evaluate the effect of dislocation length and layer height on the mechanical response of tandem honeycomb through parametric simulation. Overall, our results suggest that dislocation length is proportional to the collapse stress, and the layer height decides the equivalent modulus and collapse stress of tandem honeycomb, specifically, dislocation length helps achieve higher collapse stress in the tandem honeycomb of varying layer heights.

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“…Guo et al [16] studied the flat strength, edgewise strength, bursting strength, and puncture strength of paper corrugation-honeycomb composite sandwich panel by experiments, and the results proved that the new-type structure can hold excellent mechanical properties. Zhou et al [17] studied the out-of-plane compression mechanical properties and energy absorption of the double-layer structure with four-types of Nomex honeycombs, and the result showed that the composite structure can have better impact protection than the single-layer honeycomb structures. Guo et al [18] studied the mechanical behavior, deformation mode, and cushioning energy absorption of paper composite sandwich structure with sinusoidal corrugation and hexagonal honeycomb under static out-of-plane compression.…”

Section: Introductionmentioning

confidence: 99%

Dynamic cushioning energy absorption of paper composite sandwich structures with corrugation and honeycomb cores under drop impact

Guo

Han

et al. 2021

Jnl of Sandwich Structures & Materials

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The paper composite sandwich structure with corrugation and honeycomb cores has been widely used in civil and national defense industries, and the cushioning energy absorption characteristic is a key indicator to evaluate the performance of this composite structure. Therefore, this paper is focus on the influences of honeycomb thickness on the shock acceleration response and deformation characteristics to analyze cushioning energy absorption performance of the composite structure by various experimental tests. The experimental result shows that, the paper corrugation layer firstly comes into crushed, and then the paper honeycomb layer is crushed. Additionally, the large honeycomb thickness may cause the secondary collapse of paper honeycomb layer. Under the same impact energy or impact mass, the cushioning energy absorption of the single-sided composite sandwich structure is better than that of the double-sided structure with the same honeycomb thickness. However, the impact resistance of the double-sided composite structure is better than that of the single-sided structure. For the paper composite sandwich structures with the honeycomb thicknesses 10, 15, 20 and 25 mm, the increase of honeycomb thickness would decrease the cushioning energy absorption of the whole structure under the drop impact with low energy. However, under the drop impact with high energy, the influence of honeycomb thickness on cushioning energy absorption is contrary. For the paper composite sandwich structure, the specific energy absorption, unit volume energy absorption, and stroke efficiency for the honeycomb thicknesses 10, 15, 20 and 25 mm are higher than those for the honeycomb thickness 70 mm. Therefore, the low honeycomb thickness is more advantageous for the cushioning energy absorption of paper composite sandwich structure.

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Mechanical performance and energy absorption properties of structures combining two Nomex honeycombs

Cited by 54 publications

References 34 publications

Impact Dynamic Behavior and Deformation Mode of a Lightweight-Coated Honeycomb Steel Structure

Impact Dynamic Behavior and Deformation Mode of a Lightweight-Coated Honeycomb Steel Structure

Effect of dislocation and layer height on the compression performance of tandem honeycombs

Dynamic cushioning energy absorption of paper composite sandwich structures with corrugation and honeycomb cores under drop impact

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