Energy absorption and in-plane mechanical behavior of honeycomb structures with reinforced strut

Lu, Qi; Deng, Xiaolin

doi:10.1016/j.compstruct.2023.117399

Cited by 23 publications

(1 citation statement)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers have extensively explored the deformation behavior and EA properties of the auxetic structures, which can generally be divided into three categories: by adjusting the structural parameters of the cell to optimize the mechanical properties, [ 23–25 ] such as gradient cell structure or bionic structure can provide lower initial peak stress values; [ 26,27 ] by multi‐material additive manufacturing technology to adjust the material distribution, this method can effectively control the deformation behavior of the structure; [ 13,28,29 ] using auxetic structure as the frame and an elastic material as the filling matrix, the negative Poisson's ratio effect of the frame puts the matrix in biaxial compression, thus also providing additional stiffness and EA capacity; [ 22,30 ] and recently, it has also been reported that a reasonable combination of multiple enhanced mechanical properties methods can also exhibit higher stability with higher load‐bearing capacity. [ 23 ]…”

Section: Introductionmentioning

confidence: 99%

Node‐Reinforced Design and Selective Remanufacturing of Auxetic Lattice Structures

Zhang,

Xu,

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Auxetic structures have many potential applications due to their counter‐intuitive deformation behavior and desirable mechanical properties. However, auxetic structures have some drawbacks, such as bending or rotational deformation of ligaments, leading to relatively low energy absorption performance and stability. In this paper, we propose designing nodal reinforcement of the sinusoidal lattice, and silicone rubber is selectively 3D printed inside the structure. As a result, under quasi‐static loading, the nodes of the structure improve the energy absorption performance by 214%; compared to resin reinforcement, silicone rubber gradient reinforcement not only continues to provide load‐bearing capacity to the structure but also improves energy absorption by a significant 112%. The assignment of silicone rubber nodes was found to effectively prevent the lateral slip of the structure after ligament rupture, resulting in a more stable and controllable deformation of the sinusoidally auxetic structure. Under low‐velocity dynamic loading, silicone rubber’s designed nodes improve the structure’s deformation stability more significantly and enhance the energy absorption performance, which increases with the strain rate. The design and fabrication techniques have the potential for the integrated fabrication of multi‐material lightweight structures with complex shapes, superior mechanical properties, and multifunctional attributes.This article is protected by copyright. All rights reserved.

show abstract

Section: Introductionmentioning

confidence: 99%

Node‐Reinforced Design and Selective Remanufacturing of Auxetic Lattice Structures

Zhang,

Xu,

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

In‐Plane Impact Characteristics of Auxetic Rotating Triangular Honeycomb Inspired by a Rotating Rigid Structure

Chen,

Huang,

Deng

2024

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

Inspired by rotating rigid structures, an auxiliary rotating triangular honeycomb structure (ARTH) is designed in this paper. The structure has dual platform stress, which can reduce the initial peak stress generated during collisions, reducing injuries to pedestrians and vehicle occupants. The accuracy of the finite element numerical model is verified by experiments, and a series of researches are carried out. The mechanical properties of the structure at different velocities are studied and the classification diagram of deformation modes is obtained. Under low‐speed impact load, ARTH has two deformation stages and two stress plateau regions, in which the stress of the second plateau is more than twice that of the first plateau. Then, a theoretical model based on plastic dissipation theory predicts the stress platform at different deformation stages under quasi‐static conditions. Parametric analysis shows that increasing wall thickness t can significantly improve the stress platform and energy absorption, but the negative Poisson’s ratio effect is weakened. The influence of angle θ on the first stage deformation of ARTH is significant. These studies can provide some references for the design of double‐platform stress and the reduction of initial peak stress of rotating auxiliary structures.This article is protected by copyright. All rights reserved.

show abstract

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Guang,

Huang,

Deng

2024

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

This study extensively characterizes the out‐of‐plane stiffness and energy harvesting capabilities of a newly proposed anti‐trichiral hierarchical auxetic honeycomb structure, both mechanically and deformationally. By introducing a design concept based on the anti‐trichiral honeycomb (ATCH), a structure with superior out‐of‐plane load‐carrying capacity and excellent auxeticity is achieved. To validate the finite element model, compression simulations are conducted. Comparative investigations into the morphing characteristics and energy harvesting performance between the novel structure and the ATCH are performed. Additionally, the influence of various parameters on the comprehensive performance of the novel auxetic structure is explored. It has been found that the angle φ is most sensitive to the auxetic properties, while the ratio k significantly impacts energy absorption. This research advances the design of novel auxetic structures for potential applications in protective engineering.

show abstract

Energy absorption and in-plane mechanical behavior of honeycomb structures with reinforced strut

Cited by 23 publications

References 43 publications

Node‐Reinforced Design and Selective Remanufacturing of Auxetic Lattice Structures

Node‐Reinforced Design and Selective Remanufacturing of Auxetic Lattice Structures

In‐Plane Impact Characteristics of Auxetic Rotating Triangular Honeycomb Inspired by a Rotating Rigid Structure

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Contact Info

Product

Resources

About