Advanced honeycomb designs for improving mechanical properties: A review

Qi, Chang; Jiang, Feng; Yang, Shu

doi:10.1016/j.compositesb.2021.109393

Cited by 337 publications

(78 citation statements)

References 222 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reason also explains the comparative results along the Z-axis and –Z-axis. The honeycomb structures with higher porosity and lower mass density than solid materials result in a high specific stiffness/strength and specific energy absorption (Qi et al , 2021). However, the reinforcement effect of the structures cannot offset the impact of the removal of materials at the weight reduction ratio of 32.64%.…”

Section: Resultsmentioning

confidence: 99%

Lightweight design of an AlSi10Mg aviation control stick additively manufactured by laser powder bed fusion

Wang

Wei

Liu³

et al. 2022

RPJ

View full text Add to dashboard Cite

Purpose This paper aims to explore a structural optimization method to achieve the lightweight design of an aviation control stick part manufactured by laser powder bed fusion (LPBF) additive manufacturing (AM). The utilization of LPBF for the fabrication of the part provides great freedom to its structure optimization, further reduces its weight and improves its portability. Design/methodology/approach The stress distribution of the model was analyzed by finite element analysis. The material distribution path of the model was optimized through topology optimization. The structure and size of the parts were designed by applying honeycomb structures for weight reduction. The lightweight designed control stick part model was printed by LPBF using AlSi10Mg. Findings The weight of the control stick model was reduced by 32.64% through the optimization method using honeycomb structures with various geometries. The similar stress concentrations of the control stick model indicate that weight reduction has negligible effect on its mechanical strength. The maximum stress of the lightweight designed model under loading is 230.85 MPa, which is 61.81% larger than that of the original model. The lightweight control stick part manufactured by LPBF has good printability and service performance. Originality/value A structural optimization method integrating topology, shape and size optimization was proposed for a lightweight AlSi10Mg control stick printed by LPBF. The effectiveness of the optimization method, the printability of the lightweight model and the service performance of LPBF-printed AlSi10Mg control stick was verified, which provided practical references for the lightweight design of AM.

show abstract

Section: Resultsmentioning

confidence: 99%

Lightweight design of an AlSi10Mg aviation control stick additively manufactured by laser powder bed fusion

Wang

Wei

Liu³

et al. 2022

RPJ

View full text Add to dashboard Cite

show abstract

“…Relative density is a vital index used to evaluate reliability when comparing the results between the HKH, KH, and RHH. For the KH and RHH, the relative densities Δρ ΚΗ and Δρ RΗΗ can be defined, respectively, as follows [23]:…”

Section: Geometric Configurations Ofmentioning

confidence: 99%

Dynamic Crushing Analysis of Hexagonal-Kagome Combined Honeycomb with Negative Poisson’s Ratio

Wang

Yang

Jun

2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

To enhance the mechanical performances of traditional honeycombs, a novel combined honeycomb (HKH) was proposed based on the regular hexagonal honeycomb (RHH) and Kagome honeycomb (KH). A systematic investigation of the in-plane dynamic crushing behaviors of the honeycombs was conducted via the finite element method, and the crashworthiness characteristics of the three honeycombs were examined. Using one-dimensional shock wave theory and least squares fitting, a fitting formula of the plateau stress was obtained, and the deformation mechanism of the HKH was determined based on the elastic buckling of the cell wall. The results showed that the HKH exhibited a higher plateau stress than the RHH for any velocity impact, while the negative Poisson’s ratio effect was more significant than that of the KH for low-velocity impacts (the peak Poisson’s ratios of the HKH and KH were −0.312 and −0.286, respectively). Furthermore, the effects of the impact velocity and relative density on the energy absorption and auxetic performances were explored. In this study, a novel design was proposed by combining various cell elements to obtain better crashworthiness, providing a new concept to promote the development of lightweight materials.

show abstract

“…Mechanical metamaterials refer to a category of artificial structures with counterintuitive mechanical properties originating in their unit cells [1][2][3][4][5][6]. As one of the most widely studied mechanical metamaterials, auxetic metamaterial defines a kind of materials with special compressive properties, i.e., transverse expansion under uniaxial tension, which is also well known as the negative Poisson's ratio (NPR) property [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Mechanical behaviors of a novel auxetic honeycomb characterized by re-entrant combined-wall hierarchical substructures

Zhou

Pan

Chen

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

The current focus of the metamaterials is to further improve their performance by the unit cell innovation, while for the auxetic metamaterials, the compromise between the mechanical properties and auxetic effect still needs more efforts. Given this issue, here we developed a novel auxetic honeycomb, named re-entrant combined-wall (RCW) honeycomb, by introducing four hierarchical substructures to the RE cell. Analytical expressions were derived and used to study the in-plane elastic constants of the RCW honeycomb, which were well confirmed by the established finite element model. Further, we investigated its crushing behaviors under large deformation by the explicit numerical method, and the quasi-static crushing experiments were also carried out by the 3D-printed specimens. Results show that the properties of the proposed RCW honeycomb have a high degree of orthogonality and tunability. Compared with the traditional RE honeycomb, the Young’s modulus of the RCW honeycomb in the y direction increases by more than 120%, and the Poisson’s ratio decreases by about 43%. Besides, behaviors of the cell wall contact induced by the adding substructure can lead to an interesting stress enhancement phenomenon under large deformation, which significantly increases its crushing strength, up to 140%, compared with the RE honeycomb. Therefore, the results in this work effectively demonstrate the improved mechanical properties and auxetic performance of the proposed RCW honeycomb. Besides, the adopted design strategy of hierarchical substructure also exhibits great potential for developing novel and excellent auxetic mechanical metamaterials.

show abstract

Advanced honeycomb designs for improving mechanical properties: A review

Cited by 337 publications

References 222 publications

Lightweight design of an AlSi10Mg aviation control stick additively manufactured by laser powder bed fusion

Lightweight design of an AlSi10Mg aviation control stick additively manufactured by laser powder bed fusion

Dynamic Crushing Analysis of Hexagonal-Kagome Combined Honeycomb with Negative Poisson’s Ratio

Mechanical behaviors of a novel auxetic honeycomb characterized by re-entrant combined-wall hierarchical substructures

Contact Info

Product

Resources

About