Multi-morphology lattices lead to improved plastic energy absorption

Alberdi, Ryan; Dingreville, Remi Philippe Michel; Robbins, Joshua; Walsh, Timothy; White, Benjamin; Jared, Bradley Howell; Boyce, Brad Lee

doi:10.1016/j.matdes.2020.108883

Cited by 85 publications

(29 citation statements)

References 40 publications

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“…Multi-morphology structures made from TPMS have been widely used in biomechanical scaffolds[ 37 , 52 , 53 ]. Their geometries have different functions since the lattice structure change in terms of porosity, cellular topology, and the material itself[ 54 , 55 ]. As described in the previous sections, bone tissue structures vary locally.…”

Section: Methods and Fabricationmentioning

confidence: 99%

Additively Manufactured Multi-Morphology Bone-like Porous Scaffolds: Experiments and Micro-Computed Tomography-Based Finite Element Modeling Approaches

Noroozi¹,

Tatar²,

Zolfagharian³

et al. 2022

IJB

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Tissue engineering, whose aim is to repair or replace damaged tissues by combining the principle of biomaterials and cell transplantation, is one of the most important and interdisciplinary fields of regenerative medicine. Despite remarkable progress, there are still some limitations in the tissue engineering field, among which designing and manufacturing suitable scaffolds. With the advent of additive manufacturing (AM), a breakthrough happened in the production of complex geometries. In this vein, AM has enhanced the field of bioprinting in generating biomimicking organs or artificial tissues possessing the required porous graded structure. In this study, triply periodic minimal surface structures, suitable to manufacture scaffolds mimicking bone’s heterogeneous nature, have been studied experimentally and numerically; the influence of the printing direction and printing material has been investigated. Various multi-morphology scaffolds, including gyroid, diamond, and I-graph and wrapped package graph (I-WP), with different transitional zone, have been three-dimensional (3D) printed and tested under compression. Further, a micro-computed tomography (μCT) analysis has been employed to obtain the real geometry of printed scaffolds. Finite element analyses have been also performed and compared with experimental results. Finally, the scaffolds’ behavior under complex loading has been investigated based on the combination of μCT and finite element modeling.

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Section: Methods and Fabricationmentioning

confidence: 99%

Additively Manufactured Multi-Morphology Bone-like Porous Scaffolds: Experiments and Micro-Computed Tomography-Based Finite Element Modeling Approaches

Noroozi¹,

Tatar²,

Zolfagharian³

et al. 2022

IJB

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“…Inspired by the structures of wheat awn and softwood branches [2], turtle rib [3], shark denticle [4], bamboo [5] and other natural structures, many scientific research teams have been trying to find an optimal method from nature to achieve higher performance requirements [6][7][8][9]. Function graded structure (FGS) is one of the design methods derived from nature, and has been widely used in various fields, such as heat dissipating [10,11], energy absorption [12][13][14][15], optoelectronic and thermoelectric [16], biomedical prosthetic device [17][18][19][20][21] machinery and equipment application [22,23].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and energy absorption properties of functionally graded lattice structures based on minimal curved surfaces

Zhang

Zhao

et al. 2021

Int J Adv Manuf Technol

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：Compared with uniform structures, functionally graded lattice structures can control mechanical properties through varying structure and volume fraction. In this study, a three-period minimal surface method was used to generate functional lattice structure with linear or quadratic function (LF or QF) gradient strategy in the forming direction, and the samples were fabricated by selective laser melting (SLM) using Ti-6Al-4V metal powder. The mechanical properties, deformation behavior, and energy absorption performance of graded lattice, LF and QF I-Wrapped Package (IW-P) lattice structures were systematically investigated through experiment and finite element analysis (FEA). Based on the experiment and numerical simulation results, the LF lattice structure shows higher elastic modules and yield strength during small strain period. And the merits of performance increased layer-by-layer under large strain. Additionally, the simulation results based on Johnson-Cook and failure model show that this model can reflect structural compression deformation behavior and mechanical performance prediction. Furthermore, the elastic modulus of LF lattice structure is higher than uniform lattice structures by nearly 61.52% under the same volume fraction. Thence, the LF or QF lattice structures have better support performance under small strain and stronger energy absorption capacity under large strain with the same volume fraction compared with other lattice structures, which shows superior potential to be applied to manufacture protective devices or vibration damping devices.

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“…Pham et al [ 29 ] concluded that the hybrid of multiple unit cell architectures could be adopted to increase the damage-tolerance of micro-lattice materials. Most recently, multi-morphology lattices consisting of FCC and BCC unit cells were proposed by Alberdi et al [ 30 ] and the plastic energy absorption performance was found to be improved compared with the lattice with uniform cells. The above investigations provide a new perspective on the optimal design of lattice structures by using the hybrid method.…”

Section: Introductionmentioning

confidence: 99%

“…The above investigations provide a new perspective on the optimal design of lattice structures by using the hybrid method. Nevertheless, either only the elastic properties of the hybrid lattices were focused on [ 23 , 24 , 27 , 28 ] or only the periodic assignment of sub-cells were considered [ 25 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

A Multi-Cell Hybrid Approach to Elevate the Energy Absorption of Micro-Lattice Materials

Xiao

Song

et al. 2020

Materials

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Multi-cell hybrid micro-lattice materials, in which the stretching dominated octet cells were adopted as the strengthen phase while the bending dominated body centered cubic (BCC) lattice was chosen as the soft matrix, were proposed to achieve superior mechanical properties and energy absorption performance. Both stochastic and symmetric distribution of octet cells in the BCC lattice were considered. The cell assembly micromechanics finite element model (FEM) was built and validated by the experimental results. Accordingly, virtual tests were conducted to reveal the stress–strain relationship and deformation patterns of the hybrid lattice specimens. Meanwhile, the influence of reinforcement volume fraction and strut material on the energy absorption ability of the specimens was analyzed. It was concluded that the reinforced octet cells could be adopted to elevate the elastic modulus and collapse strength of the pure BCC micro-lattice material. The multi-cell design could lead to strain hardening in the plateau stress region which resulted in higher plateau stresses and energy absorption capacities. Besides, the symmetric distribution of reinforcements would cause significant stress fluctuations in the plateau region. The obtained results demonstrated that the multi-cell hybrid lattice architectures could be applied to tailor the mechanical behavior and plastic energy absorption performance of micro-lattice materials.

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Multi-morphology lattices lead to improved plastic energy absorption

Cited by 85 publications

References 40 publications

Additively Manufactured Multi-Morphology Bone-like Porous Scaffolds: Experiments and Micro-Computed Tomography-Based Finite Element Modeling Approaches

Additively Manufactured Multi-Morphology Bone-like Porous Scaffolds: Experiments and Micro-Computed Tomography-Based Finite Element Modeling Approaches

Mechanical and energy absorption properties of functionally graded lattice structures based on minimal curved surfaces

A Multi-Cell Hybrid Approach to Elevate the Energy Absorption of Micro-Lattice Materials

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