Static and dynamic analyses of aluminum foam geometric models using the homogenization procedure and the FEA

Roszkos, Cosmin Stefan; Bocko, Jozef; Kula, Tomáš; Šarloši, Juraj

doi:10.1016/j.compositesb.2019.03.074

Cited by 25 publications

(9 citation statements)

References 25 publications

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“…Wang [ 150 ] used micro-CT technology to numerically model the yield characteristics of aluminum (Al) foam [ 151 , 152 , 153 ]. Figure 12 b presents deformation modes under compression and tension.…”

Section: Microstructure Mechanical Models Of Cellular Mediummentioning

confidence: 99%

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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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Section: Microstructure Mechanical Models Of Cellular Mediummentioning

confidence: 99%

“…The cost of using X-ray or CT scanning technology is high, which limits its wide application. Wang [150] used micro-CT technology to numerically model the yield characteristics of aluminum (Al) foam [151][152][153]. Figure 12b presents deformation modes under com-…”

Section: Multi-cell Modelmentioning

confidence: 99%

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

et al. 2021

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“…A collection of experiments, including four different foaming temperatures (50, 80, 110, 130 • C) and six different foaming pressures (8,13,18,23,28,32 MPa) were performed using a three-stage process. In the first stage, the samples were saturated under fixed gas pressure and die temperature conditions for at least 8 h. The next stage was a desorption process, in which the pressure decreased to room pressure in less than 10 s, and the gas in the polymer began to nucleate and grow.…”

Section: Chemicals and Foaming Productionmentioning

confidence: 99%

“…Three-dimensional representative volume element (RVE) models based on a representative structural unit comprised of a set of randomly distributed cells were applied. RVE models more exactly reproduce real foams, since they consider mesoscopic features that directly affect the final mechanical behavior [27,28]. It was assumed that the average mechanical properties of the RVE models were equal to the average properties of the particular foams.…”

Section: Fem Simulationmentioning

confidence: 99%

Correlation Between the Structure and Compressive Property of PMMA Microcellular Foams Fabricated by Supercritical CO2 Foaming Method

Zhang

Zhu

et al. 2020

Polymers

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In this study, we fabricated poly (methyl methacrylate) (PMMA) microcellular foams featuring tunable cellular structures and porosity, through adjusting the supercritical CO2 foaming conditions. Experimental testing and finite element model (FEM) simulations were conducted to systematically elucidate the influence of the foaming parameters and structure on compressive properties of the foam. The correlation between the cellular structure and mechanical properties was acquired by separating the effects of the cell size and foam porosity. It was found that cell size reduction contributes to improved mechanical properties, which can be attributed to the dispersion of stress and decreasing stress concentration.

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“…A series of analyses were performed in the SolidWorks programming environment (2012; Dassault Systèmes SolidWorks Corporation, Waltham, MA, USA) to verify the degree of consistency of the simulation results of different methods of material hardening. These analyses were based on the methodology of applying different material models in the conditions of uniaxial or multiaxial stress for basic stress modes [ 61 , 62 , 63 , 64 ].…”

Section: Numerical Simulations Of the Effects Of Isotropic And Kinmentioning

confidence: 99%

Influence of Different Strain Hardening Models on the Behavior of Materials in the Elastic–Plastic Regime under Cyclic Loading

et al. 2020

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In exact analyses of bodies in the elastic–plastic regime, the behavior of the material above critical stress values plays a key role. In addition, under cyclic stress, important phenomena to be taken into account are the various types of hardening and the design of the material or structure. In this process, it is important to define several groups of characteristics. These include, for instance, the initial area of plasticity or load which defines the interface between elastic and plastic deformation area. The characteristics also include the relevant law of plastic deformation which specifies the velocity direction of plastic deformation during plastic deformation. In the hardening condition, it is also important to determine the position, size and shape of the subsequent loading area. The elasto-plastic theory was used for the analysis of special compliant mechanisms that are applied for positioning of extremely precise members of the Compact Linear Collider (CLIC), e.g., cryomagnets, laser equipment, etc. Different types of deformation hardening were used to simulate the behavior of particular structural elements in the elastic–plastic regime. Obtained values of stresses and deformations may be used in further practical applications or as default values in other strain hardening model simulations.

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Static and dynamic analyses of aluminum foam geometric models using the homogenization procedure and the FEA

Cited by 25 publications

References 25 publications

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

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

Correlation Between the Structure and Compressive Property of PMMA Microcellular Foams Fabricated by Supercritical CO2 Foaming Method

Influence of Different Strain Hardening Models on the Behavior of Materials in the Elastic–Plastic Regime under Cyclic Loading

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