Reusable metamaterial via inelastic instability for energy absorption

Tan, Xuezhi; Chen, Shuai; Zhu, Shengnan; Wang, Bing; Xu, Peifei; Yao, Kaili; Sun, Yun

doi:10.1016/j.ijmecsci.2019.02.011

Cited by 83 publications

(28 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They can experience large compressive strains at almost constant stress level absorbing a large amount of energy without inducing high stress level. The principle of energy absorption in meta-materials and lattice-based structures provides the capability to convert kinetic energy into other types of energies through elastic and/or plastic deformations, mechanical instability and structural collapse [8][9][10]. Among various energy absorption mechanisms, plastic deformation in ductile materials like metals and polymers has been the most effective classical method to absorb energy [8,10].…”

Section: Introductionmentioning

confidence: 99%

“…The principle of energy absorption in meta-materials and lattice-based structures provides the capability to convert kinetic energy into other types of energies through elastic and/or plastic deformations, mechanical instability and structural collapse [8][9][10]. Among various energy absorption mechanisms, plastic deformation in ductile materials like metals and polymers has been the most effective classical method to absorb energy [8,10]. Tan et al [10] proposed stainless steel meta-materials that dissipate energy through instability and plastic deformation.…”

Section: Introductionmentioning

confidence: 99%

“…Among various energy absorption mechanisms, plastic deformation in ductile materials like metals and polymers has been the most effective classical method to absorb energy [8,10]. Tan et al [10] proposed stainless steel meta-materials that dissipate energy through instability and plastic deformation. Cyclic loading-unloading compression experiments were conducted to test the structure's repeatability, and annealing treatment was carried out to improve it.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reversible energy absorbing meta-sandwiches by FDM 4D printing

Bodaghi

Serjouei

Zolfagharian

et al. 2020

International Journal of Mechanical Sciences

161

View full text Add to dashboard Cite

The aim of this paper is to introduce dual-material auxetic meta-sandwiches by four-dimensional (4D) printing technology for reversible energy absorption applications. The meta-sandwiches are developed based on an understanding of hyper-elastic feature of soft polymers and elasto-plastic behaviors of shape memory polymers and cold programming derived from theory and experiments. Dual-material lattice-based meta-structures with different combinations of soft and hard components are fabricated by 4D printing fused deposition modelling technology. The feasibility and performance of reversible dual-material meta-structures are assessed experimentally and numerically. Computational models for the meta-structures are developed and verified by the experiments. Research trials show that the dual-material auxetic designs are capable of generating a range of non-linear stiffness as per the requirement of energy absorbing applications. It is found that the meta-structures with hyper-elastic and/or elasto-plastic features dissipate energy and exhibit mechanical hysteresis characterized by non-coincident compressive loading-unloading curves. Mechanical hysteresis can be achieved by leveraging elasto-plasticity and snap-through-like mechanical instability through compression. Experiments also reveal that the mechanically induced plastic deformation and dissipation processes are fully reversible by simply heating. The material-structural model, concepts and results provided in this paper are expected to be instrumental towards 4D printing tunable meta-sandwiches for reversible energy absorption applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reversible energy absorbing meta-sandwiches by FDM 4D printing

Bodaghi

Serjouei

Zolfagharian

et al. 2020

International Journal of Mechanical Sciences

161

View full text Add to dashboard Cite

show abstract

“…In such architected structures, large strain at almost constant stress with high energy absorption can be tolerated without inducing high stress. Energy absorption principles in such advanced structures may be defined as the capacity to convert kinetic energy into other types of energy by means of elastic/plastic deformation, mechanical instabilities and failure [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures

et al. 2021

View full text Add to dashboard Cite

Today, the rational combination of materials and design has enabled the development of bio-inspired lattice structures with unprecedented properties to mimic biological features. The present study aims to investigate the mechanical performance and energy absorption capacity of such sophisticated hybrid soft–hard structures with gradient lattices. The structures are designed based on the diversity of materials and graded size of the unit cells. By changing the unit cell size and arrangement, five different graded lattice structures with various relative densities made of soft and hard materials are numerically investigated. The simulations are implemented using ANSYS finite element modeling (FEM) (2020 R1, 2020, ANSYS Inc., Canonsburg, PA, USA) considering elastic-plastic and the hardening behavior of the materials and geometrical non-linearity. The numerical results are validated against experimental data on three-dimensional (3D)-printed lattices revealing the high accuracy of the FEM. Then, by combination of the dissimilar soft and hard polymeric materials in a homogenous hexagonal lattice structure, two dual-material mechanical lattice statures are designed, and their mechanical performance and energy absorption are studied. The results reveal that not only gradual changes in the unit cell size provide more energy absorption and improve mechanical performance, but also the rational combination of soft and hard materials make the lattice structure with the maximum energy absorption and stiffness, in comparison to those structures with a single material, interesting for multi-functional applications.

show abstract

“…Most negative stiffness metamaterials were designed utilizing the instability of structures, which leads to metamaterials often having obvious anisotropy, i.e., negative stiffness is only in one special direction. A small number of studies have touched on metamaterials with negative stiffness in two or three specific orthogonal directions.…”

Section: Introductionmentioning

confidence: 99%

Quasi‐All‐Directional Negative Stiffness Metamaterials Based on Negative Rotation Stiffness Elements

Zhu

Tan

Chen

et al. 2020

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

Most negative stiffness metamaterials exhibit negative stiffness effects in only one direction. Herein, based on the theory of anisotropy, the concept of “negative stiffness” is redefined. A method to determine whether a material has all‐directional negative stiffness is proposed. The possibility and difficulty of achieving all‐directional negative stiffness are discussed. A new type of negative stiffness metamaterial comprising negative stiffness rotation hinges and rigid trusses is studied. The results show that quasi‐all‐directional negative stiffness is achievable.

show abstract

Reusable metamaterial via inelastic instability for energy absorption

Cited by 83 publications

References 48 publications

Reversible energy absorbing meta-sandwiches by FDM 4D printing

Reversible energy absorbing meta-sandwiches by FDM 4D printing

Energy Absorption and Mechanical Performance of Functionally Graded Soft–Hard Lattice Structures

Quasi‐All‐Directional Negative Stiffness Metamaterials Based on Negative Rotation Stiffness Elements

Contact Info

Product

Resources

About