A review of composite lattice structures

Hunt, C.; Morabito, Francescogiuseppe; Grace, Chris F.; Zhao, Yongsheng; Woods, Benjamin K.S.

doi:10.1016/j.compstruct.2021.115120

Cited by 72 publications

(20 citation statements)

References 106 publications

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“…However, if we look carefully at the structure of Fig. 4A, we can see that it is very similar to lightweight lattice structures [40,41]. Such fibre-reinforced lattice structures are specifically designed for their high strength and stiffness to weight ratio and can be made in both 2D or 3D geometries.…”

Section: Discussionmentioning

confidence: 88%

“…Such fibre-reinforced lattice structures are specifically designed for their high strength and stiffness to weight ratio and can be made in both 2D or 3D geometries. Typically in such structures, the members have been sized such that they do not buckle under load [40,41]. However, their members could also be sized instead to allow for elastic buckling, possibly accompanied by snap-through, such as the sample shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

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Buckling Metamaterials for Extreme Vibration Damping

Dykstra¹,

Coen²,

Alexandre³

et al. 2023

Preprint

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Damping mechanical resonances is a formidable challenge in an increasing number of applications. Many of the passive damping methods rely on using low stiffness dissipative elements, complex mechanical structures or electrical systems, while active vibration damping systems typically add an additional layer of complexity. However, in many cases, the reduced stiffness or additional complexity and mass render these vibration damping methods unfeasible. This article introduces a new method for passive vibration damping by allowing buckling of the primary load path, which sets an upper limit for vibration transmission: the transmitted acceleration saturates at a maximum value, no matter what the input acceleration is. This nonlinear mechanism leads to an extreme damping coefficient tan δ ≈ 0.23 in a metal metamaterial-orders of magnitude larger than the linear damping of traditional lightweight structural materials. This article demonstrates this principle experimentally and numerically in free-standing rubber and metal mechanical metamaterials over a range of accelerations, and shows that bi-directional buckling can further improve its performance. Buckling metamaterials pave the way towards extreme vibration damping without mass or stiffness penalty, and as such could be applicable in a multitude of high-tech applications, including aerospace structures, vehicles and sensitive instruments.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Buckling Metamaterials for Extreme Vibration Damping

Dykstra¹,

Coen²,

Alexandre³

et al. 2023

Preprint

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“…Composite materials allow the problem of maintaining a high level of physical and mechanical characteristics while reducing the structure weight to be solved in industries such as space, aviation, automotive, construction, etc. Trends demonstrate that the development of technology for the production of the composite materials based on a polymer matrix and the growth of their usage in designs [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties Degradation of Fiberglass Tubes during Biaxial Proportional Cyclic Loading

et al. 2023

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Composite structures during an operation are subjected to various types of external loading (impact, vibration, cyclic, etc.), which may lead to a decrease in mechanical properties. Previously, many experimental investigations of the mechanical behavior of composites under uniaxial cyclic loading were carried out. Acquisition of new data on the reduction of composite materials’ mechanical characteristics under conditions of multiaxial cyclic loading, as well as verification of existing models for calculation of the residual properties, are relevant. Therefore, this work is devoted to the experimental investigation of the mechanical behavior of fiberglass tubes under proportional cyclic loading. Static and fatigue tests were carried out under tension with torsion conditions. Inhomogeneous strain fields were obtained using a non-contact optical video system VIC-3D. The structural damage accumulation processes were analyzed by an AMSY-6 acoustic emission signals recording system. Surface defects were determined using a DinoLite microscope. Residual dynamic elastic modules were calculated during fatigue tests, and fatigue sensitivity curves were built. Data was approximated using various models, and their high descriptive capability was revealed. Damage accumulation stages were determined. The dependence of the models’ parameters on a stress state were observed. It was concluded that multiaxial cyclic loading leads to a significant decrease in mechanical properties, which should be taken into account in composite structure design.

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“…Considering the periodic repetition characteristics, the equivalent continuum representative volume element (RVE) method [ 17 ] has been widely used to make a bridge between the meso and macro scale lattice structures. In terms of the efforts, researches were mainly focused on the analytical solutions of the ideal designed model.…”

Section: Introductionmentioning

confidence: 99%

Spatial Array Configuration Effect of Body‐Centered Cubic Lattice Structures with Finite Unit Cells

Liu

Ning

2022

Adv Eng Mater

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The mechanical properties lattice structures have been studied a lot due to the simple geometry. They all follow the assumption that the mechanical properties of lattice structures are identical with the corresponding unit cell. However, our experimental results show obvious boundary effect. In this paper, the spatial array configuration effect (n x , n y , n z ) of body centered cubic (BCC) lattice structures is pronounced to declare the difference. The multilayer BCC lattice structures are divided into three types which show three different deformation mechanism, and their equivalent stiffness will not converge on a unique solution. Then, the “large unit cell” assumption is proposed to theoretically predict the equivalent modulus with different array configuration. Furthermore, the failure modes of the three types are also discussed. The finding results show that the spatial array configuration also plays an important role in determining both the equivalent modulus and the failure modes for the multilayer BCC lattice structures. In addition, we conclude that the name “lattice structure” is more suitable for the current manufacturing level than the “lattice material.”

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A review of composite lattice structures

Cited by 72 publications

References 106 publications

Buckling Metamaterials for Extreme Vibration Damping

Buckling Metamaterials for Extreme Vibration Damping

Mechanical Properties Degradation of Fiberglass Tubes during Biaxial Proportional Cyclic Loading

Spatial Array Configuration Effect of Body‐Centered Cubic Lattice Structures with Finite Unit Cells

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