On compressive deformation behavior of hollow-strut cellular materials

Iio, Shouichi; Hasegawa, Kazuki; Fushimi, Shugo; Yonezu, Akio; Chen, Xi

doi:10.1016/j.matdes.2016.05.048

Cited by 14 publications

(2 citation statements)

References 23 publications

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“…Similarly, Iankov et al [25] carried out finite element simulations of micro-indentation to investigate the material properties of a thin copper film deposited over a brass alloy (CuZn36) substrate, using a trial-and-error approach. Additionally, a finite element analysis was performed by Iio et al [26] to obtain the modulus of elasticity and yield stress of a hollow-strut cellular material based on micro-indentation experiments.…”

Section: Introductionmentioning

confidence: 99%

An Approach for Material Model Identification of a Composite Coating Using Micro-Indentation and Multi-Scale Simulations

et al. 2022

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While deposited thin film coatings can help enhance surface characteristics such as hardness and friction, their effective incorporation in product design is restricted by the limited understanding of their mechanical behavior. To address this, an approach combining micro-indentation and meso/micro-scale simulations was proposed. In this approach, micro-indentation testing was conducted on both the coating and the substrate. A meso-scale uniaxial compression finite element model was developed to obtain a material model of the coating. This material model was incorporated within an axisymmetric micro-scale model of the coating to simulate the indentation. The proposed approach was applied to a Ti/SiC metal matrix nanocomposite (MMNC) coating, with a 5% weight of SiC nanoparticles deposited over a Ti-6Al-4V substrate using selective laser melting (SLM). Micro-indentation testing was conducted on both the Ti/SiC MMNC coating and the Ti-6Al-4V substrate. The results of the meso-scale finite element indicated that the MMNC coating can be represented using a bi-linear elastic-plastic material model, which was incorporated within an axisymmetric micro-scale model. Comparison of the experimental and micro-scale model results indicated that the proposed approach was effective in capturing the post-indentation behavior of the Ti/SiC MMNC coating. This methodology can also be used for studying the response of composite coatings with different percentages of reinforcements.

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Section: Introductionmentioning

confidence: 99%

An Approach for Material Model Identification of a Composite Coating Using Micro-Indentation and Multi-Scale Simulations

et al. 2022

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“…Importantly, simulation with idealized tetrakaidecahedra models (also known as "Kelvin" models) does not reproduce the deformation behavior of the foams accurately. [17,22] For instance, Ioi et al [22] reported simulations of Kelvin foams with hollow struts to predict the elastoplastic properties. According to their results, such foams did not represent the real foam behavior, because the ideal geometry in these models did not consider imperfections, which trigger the failure of the struts/cell walls.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Complex Gray Cast Iron Open‐Cell Foams Revealing Insights on Failure and Deformation on Different Hierarchical Length‐Scales

2021

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Open‐cell gray cast iron foams are a class of porous materials of increasing interest, with great potential to be used in energy damping applications and for sound isolation. We created finite element (FE) models from 3D reconstructed data of foams and of isolated struts imaged with resolutions spanning from 0.65 to 10.5 μm. Representative volume elements (RVE) are loaded in tension to simulate and analyze foam mechanical behavior. A ductile damage model is used for tensile testing of single struts and compression testing of foams. RVEs loaded along three axes demonstrate important effects of orientation of graphite particles in the microstructure. Only simulation results that take failure into consideration are consistent with experimental findings. Strut fracture initiation strongly depends on the cross‐sectional area and its circularity and foam simulation results are heavily influenced by damage modeling. The complexity of the open‐cell foam behavior is revealed at several hierarchical levels. Simulations in which material properties are assigned excluding damage overestimate the experimental results of the foam; conversely, a very good agreement is observed if damage is considered. The models exhibiting anisotropic mechanical properties fully reproducing large fluctuations in the mechanical properties of the struts are observed in in situ experiments.

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Design of double layer protective coatings: Finite element modeling and machine learning approximations

et al. 2023

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On compressive deformation behavior of hollow-strut cellular materials

Cited by 14 publications

References 23 publications

An Approach for Material Model Identification of a Composite Coating Using Micro-Indentation and Multi-Scale Simulations

An Approach for Material Model Identification of a Composite Coating Using Micro-Indentation and Multi-Scale Simulations

Modeling of Complex Gray Cast Iron Open‐Cell Foams Revealing Insights on Failure and Deformation on Different Hierarchical Length‐Scales

Design of double layer protective coatings: Finite element modeling and machine learning approximations

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