Geometric modelling of metallic foams

Carofalo, A.; Giorgi, M. De; Morabito, Anna Eva

doi:10.1108/ec-06-2011-0070

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…Different approaches have been proposed for their design. These comprise CAD-based methods [4, 5], image-based methods (MRI/CT) [6], topology optimization [7], and methods for the optimization of scaffolds microstructure geometry based on mechanobiological criteria [8].…”

Section: Introductionmentioning

confidence: 99%

Modeling, Assessment, and Design of Porous Cells Based on Schwartz Primitive Surface for Bone Scaffolds

Ambu

Morabito

2019

The Scientific World Journal

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The design of bone scaffolds for tissue regeneration is a topic of great interest, which involves different issues related to geometry of architectures, mechanical behavior, and biological requirements, whose optimal combination determines the success of an implant. Additive manufacturing (AM) has widened the capability to produce structures with complex geometries, which should potentially satisfy the different requirements. These architectures can be obtained by means of refined methods and have to be assessed in terms of geometrical and mechanical properties. In this paper a triply periodic minimal surface (TPMS), the Schwarz’s Primitive surface (P-surface), has been considered as scaffold unit cell and conveniently parameterized in order to investigate the effect of modulation of analytical parameters on the P-cell geometry and on its properties. Several are the cell properties, which can affect the scaffold performance. Due to the important biofunctional role that the surface curvature plays in mechanisms of cellular proliferation and differentiation, in this paper, in addition to properties considering the cell geometry in its whole (such as volume fraction or pore size), new properties were proposed. These properties involve, particularly, the evaluation of local geometrical-differential properties of the P-surface. The results of this P-cell comprehensive characterization are very useful for the design of customized bone scaffolds able to satisfy both biological and mechanical requirements. A numerical structural evaluation, by means of finite element method (FEM), was performed in order to assess the stiffness of solid P-cells as a function of the changes of the analytical parameters of outer surface and the thickness of cell. Finally, the relationship between stiffness and porosity has been analyzed, given the relevance that this property has for bone scaffolds design.

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Section: Introductionmentioning

confidence: 99%

Modeling, Assessment, and Design of Porous Cells Based on Schwartz Primitive Surface for Bone Scaffolds

Ambu

Morabito

2019

The Scientific World Journal

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“…De Giorgi [ 113 , 136 ] developed a randomly distributed ellipsoidal cell model based on the Kelvin cell model, as shown in Figure 9 c. Fang [ 137 , 138 ] presented a three-dimensional (3D) mesoscopic model of closed-cell foam material [ 139 ].…”

Section: Microstructure Mechanical Models Of Cellular Mediummentioning

confidence: 99%

“…This technology can display the material microstructure layer by layer intuitively and nondestructively. The 3D microstructure of cellular medium can be further acquired by image reconstruction technology, which restores the topological structure to the greatest extent [ 60 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 ]. It has authenticity unmatched by other methods.…”

Section: Microstructure Mechanical Models Of Cellular Mediummentioning

confidence: 99%

A Review on Mechanical Models for Cellular Media: Investigation on Material Characterization and Numerical Simulation

et al. 2021

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Cellular media materials are used for automobiles, aircrafts, energy-efficient buildings, transportation, and other fields due to their light weight, designability, and good impact resistance. To devise a buffer structure reasonably and avoid resource and economic loss, it is necessary to completely comprehend the constitutive relationship of the buffer structure. This paper introduces the progress on research of the mechanical properties characterization, constitutive equations, and numerical simulation of porous structures. Currently, various methods can be used to construct cellular media mechanical models including simplified phenomenological constitutive models, homogenization algorithm models, single cell models, and multi-cell models. This paper reviews current key mechanical models for cellular media, attempting to track their evolution from their inception to their latest development. These models are categorized in terms of their mechanical modeling methods. This paper focuses on the importance of constitutive relationships and microstructure models in studying mechanical properties and optimizing structural design. The key issues concerning this topic and future directions for research are also discussed.

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Geometry Modelling of Regular Scaffolds for Bone Tissue Engineering: A Computational Mechanobiological Approach

Boccaccio

Fiorentino

Gattullo

et al. 2019

Lecture Notes in Mechanical Engineering

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Geometric modelling of metallic foams

Cited by 10 publications

References 7 publications

Modeling, Assessment, and Design of Porous Cells Based on Schwartz Primitive Surface for Bone Scaffolds

Modeling, Assessment, and Design of Porous Cells Based on Schwartz Primitive Surface for Bone Scaffolds

A Review on Mechanical Models for Cellular Media: Investigation on Material Characterization and Numerical Simulation

Geometry Modelling of Regular Scaffolds for Bone Tissue Engineering: A Computational Mechanobiological Approach

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