A state-of-the-art review on types, design, optimization, and additive manufacturing of cellular structures

Nazir, Aamer; Abate, Kalayu Mekonen; Kumar, Ajeet; Jeng, Jeng-Ywan

doi:10.1007/s00170-019-04085-3

Cited by 379 publications

(160 citation statements)

References 154 publications

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“…The porosities of all AC cellular implants are analyzed using the relationship of both volume of cellular implants, as well as the original volume (solid implant). The scientific formula for determining the porosity ρ of cellular implants was calculated using the following formula Equation (1).…”

Section: Porosity Of Ac Implantmentioning

confidence: 99%

“…Volume cs Volume solid (1) where ρ is the porosity of the implant, Volume cs is the volume after introducing the cellular structure, and Volume solid is the volume before cellular structure was introduced.…”

Section: Porosity Of Ac Implantmentioning

confidence: 99%

“…Cellular structures are abundant in nature and have been broadly used in engineering and biomedical applications such as sound and energy absorbers, lightweight structural components, heat transfer, implants, and scaffolds for years [1]. Commonly, cellular structures can be categorized into two groups: Periodic cellular structures (lattice structures) and stochastic foams (honeycombs).…”

Section: Introductionmentioning

confidence: 99%

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Design, Optimization, and Evaluation of Additively Manufactured Vintiles Cellular Structure for Acetabular Cup Implant

et al. 2019

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Cellular materials with very highly regulated micro-architectures are promising applicant materials for orthopedic medical uses while requiring implants or substituting for bone due to their ability to promote increased cell proliferation and osseointegration. This study focuses on the design of an acetabular cup (AC) cellular implant which was built using a vintiles cellular structure with an internal porosity of 56–87.9% and internal pore dimensions in the range of 600–1200 μm. The AC implant was then optimized for improving mechanical performance to reduce stress shielding by adjusting the porosity to produce stiffness (elastic modulus) to match with the bone, and allowing for bone cell ingrowth. The optimized and non-optimized AC cellular implant was fabricated using the SLM additive manufacturing process. Simulation (finite element analysis, FEA) was carried out and all cellular implants are finally tested under static loading conditions. The result showed that on the finite element model of an optimized implant, cellular has shown 69% higher stiffness than non-optimized. It has been confirmed by experimental work shown that the optimized cellular implant has a 71% higher ultimate compressive strength than the non-optimized counterpart. Finally, we developed an AC implant with mechanical performance adequately close to that of human bone.

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Section: Porosity Of Ac Implantmentioning

confidence: 99%

Section: Porosity Of Ac Implantmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design, Optimization, and Evaluation of Additively Manufactured Vintiles Cellular Structure for Acetabular Cup Implant

et al. 2019

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“…Effectively, in those cases, the stiffness function is in turn a function of displacements. Detailed information about the optimization and design of various structure types can be found in Nazir et al [5].…”

Section: Introductionmentioning

confidence: 99%

A Novel Hybrid Harmony Search Approach for the Analysis of Plane Stress Systems via Total Potential Optimization

et al. 2020

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By finding the minimum total potential energy of a structural system with a defined degree of freedoms assigned as design variables, it is possible to find the equilibrium condition of the deformed system. This method, called total potential optimization using metaheuristic algorithms (TPO/MA), has been verified on truss and truss-like structures, such as cable systems and tensegric structures. Harmony Search (HS) algorithm methods perfectly found the analysis results of the previous structure types. In this study, TPO/MA is presented for analysis of plates for plane stress members to solve general types of problems. Due to the complex nature of the system, a novel hybrid Harmony Search (HHS) approach was proposed. HHS is the hybridization of local search phases of HS and the global search phase of the Flower Pollination Algorithm (FPA). The results found via HHS were verified with the finite element method (FEM). When compared with classical HS, HHS provides smaller total potential energy values, and needs less iterations than other new generation metaheuristic algorithms.

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“…erefore, it has the advantages of low relative density, high specific strength and specific stiffness, good vibration absorption and energy absorption, and sound insulation. As a new lightweight material, which integrates physical function and structural function, honeycomb material is widely used in national defense, shipbuilding, aerospace, construction, transportation, and other fields [1][2][3][4][5][6][7]. In recent years, honeycomb aluminum has been used in the anticlimbing device of highspeed EMU to improve the passive safety protection function of rail vehicles because of its buffering and energy absorption characteristics.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Geometric Parameters on the Densification Onset Strain of Double‐Walled Honeycomb Aluminum under Out‐of‐Plane Compression

Wang

Cao

2020

Advances in Materials Science and Engineering

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As a material widely used in various lightweight structures and energy absorbing devices, honeycomb aluminum has high specific stiffness and specific strength, excellent energy absorption capacity, and vibration damping. When evaluating the energy absorption of honeycomb aluminum under out-of-plane compression, platform stress and onset strain of densification have become important parameters studied by many scholars. In this work, based on the theory that the energy absorption efficiency determines the densification onset strain, the influence of the geometric design parameters of honeycomb aluminum on the onset strain of out-of-plane quasi-static compression densification is studied. Based on the results of the finite element analysis, the relationship between the onset strain and the geometric design parameters including cell size length and wall thickness is fitted by the least squares method. A linear relationship that the onset strain of densification will decrease with the increase of the reciprocal of cell side length and the onset strain of densification will decrease with the increase of the wall thickness is exhibited in the conclusion.is work can provide a theoretical basis for the calculation of the platform stress in the plastic deformation stage.

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A state-of-the-art review on types, design, optimization, and additive manufacturing of cellular structures

Cited by 379 publications

References 154 publications

Design, Optimization, and Evaluation of Additively Manufactured Vintiles Cellular Structure for Acetabular Cup Implant

Design, Optimization, and Evaluation of Additively Manufactured Vintiles Cellular Structure for Acetabular Cup Implant

A Novel Hybrid Harmony Search Approach for the Analysis of Plane Stress Systems via Total Potential Optimization

Influence of the Geometric Parameters on the Densification Onset Strain of Double‐Walled Honeycomb Aluminum under Out‐of‐Plane Compression

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