Simulation of Apparent Elastic Property in the Two-Dimensional Model of Aluminum Foam Sandwich Panels

Qiu, Sawei; Xinna, Zhang; Hao, Qingxian; Dou, Renjun; Jin, Yan; Hu, Yuebo

doi:10.2320/matertrans.m2015008

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…The 2-D finite element model is often used to analyze the deformation behavior of porous aluminum foam due to the simple geometry shape and convenient and efficient finite element mesh division [13,14]. So, based on the inner features of AFS panels, the 2-D random models were created by combing C++ and ANSYS.…”

Section: Methodsmentioning

confidence: 99%

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Numerical simulations of effective thermal conductivity in aluminum foam sandwich panel

Zhao¹,

Hu²

2018

Therm sci

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In this work, the effective thermal conductivities of aluminum foam sandwich panels with the porosity range from 40% to 60% were studied by simulation method. The influence of porosity and pore size on the effective thermal conductivities was analyzed, and their influence mechanism was studied. In addition, simulation results were verified by theoretical formula. This further proves the feasibility of simulation method for research on the effective thermal conductivity of aluminum foam sandwich panels. The results confirmed that the porosity and pore size of aluminum foam sandwich panel had great impact upon its effective thermal conductivity.

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Section: Methodsmentioning

confidence: 99%

“…1. The detailed modeling process was reported in our previous work [14]. In this work, to investigate the influence on the effective thermal conductivity of AFS panel with the different porosities (40%, 45%, 50%, 55%, and 60%) of AFS finite element models with two kinds of pore size ranges, 1-3 mm and 3-5 mm, were considered.…”

Section: Methodsmentioning

confidence: 99%

Numerical simulations of effective thermal conductivity in aluminum foam sandwich panel

Zhao¹,

Hu²

2018

Therm sci

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“…17,18) The brie y numerical simulation and analysis processes have been illustrated in our previous work. 13) In especial, in this work, unit type adopted plane162 which is de ned by four nodes and used in the plane problem. Due to the property of inhomogeneous structure of aluminum foam core, the local plastic deformation will occur when under a little load.…”

Section: Finite Element Simulationmentioning

confidence: 99%

Effect of Parametric Variations on the Local Compression Deformation of Aluminum Foam Sandwich Panels

Zhao

Qiu

2017

Mater. Trans.

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In this article, to study the local compression deformation of aluminum foam sandwich (AFS) panels by orthogonal method, two-dimensional random simulation models of AFS panels were constructed by C++ language combining with ANSYS software, and four parameters, including aluminum foam core s geometrical characteristic parameters porosity P and pore size R and experimental parameters loading force F and local compressing length L, were simultaneously considered. Furthermore, the dependences of the local compression deformation of AFS panels on the above-mentioned parameters were investigated by range analysis and variance analysis means and the related mechanisms were described. The results of range analysis con rmed that factors in uencing local compressive deformation of AFS panels are in turn: porosity P, pore size R, local compressing length L, loading force F, in other words, P > R > L > F. Furthermore, variance analysis results showed, compared to loading conditions, geometrical parameters of samples were more in uential on the local compressive deformation of AFS panels.

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“…The parameters of matrix materials of the model are shown in Table 1. 10) The modeling process of AFS panels is illustrated in detail in the previous work. 11) In the simulation, relative density 0.3 and loading rates (0.01 m/s, 80 m/s, 160 m/s, 240 m/s) are selected, respectively so that simulating quasi-static, medium and high speed compression of AFS panels. AFS panels with larger pore diameters have lower yield strengths at the same porosity and loading rate.…”

Section: Modeling and Simulatingmentioning

confidence: 99%

Simulation of Effect of Loading Rate on Compression Properties in the Two-Dimensional Model of Aluminum Foam Sandwich Panels

Dou

Qiu

2016

Mater. Trans.

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This paper has been retracted from Mater. Trans. by the authors request due to the following reason.Firstly, we made a preliminary estimate on the density (ρ 0 ) of AFS panels before the plastic wave because we did not fully understand the property of AFS panels, which made the calculation results according to the value of the density (ρ 0 ) of AFS panels, that was wrong in the paper. For example, the locking density (ρ 1 ) of AFS panels with relative density 0.3 in Table 2 were incorrect, according to the following formula:Especially the further research results (unpublished) in the subsequent study have con ict with the above-mentioned results in the work. Secondly, with the increase of loading rate, the stress of bottom of AFS panels increases in the process of compression. However, the impact stress of loading surface is only analyzed and it is not accurate for the explanation of the mechanism for the stress of bottom of AFS panels. In addition, under the loading rate 0.01 m/s, the stress-strain curve of AFS panels are stated in the paper. However, the corresponding mechanism cannot explain the stress-strain curve of AFS panels under the loading rate 0.01 m/s. All of these could mislead the readers. At last, the withdrawal is meaningful for the preciseness of our work, and it is helpful for the subsequent research of AFS panels. A two-dimensional finite element model of aluminum foam sandwich (AFS) panels was approximated by combing C++ and ANSYS/LS-DYNA software to represent the shapes of the cells and geometric distributions. Under different loading rates, the deformation behavior, shock wave propagation process, inertial effect and stress of the bottom of the model of AFS panels are discussed resulting from simulation. We found that plastic deformation in the model first occurs in a weak section in the quasi-static compression simulation, whereas the local densification is obvious during the high-speed impact process. The results also indicate that the speed of the plastic wave, locking density and locking strain increase respectively with increasing loading rate. In addition, under the loading rate 80 m/s, the model can be compressed after the plastic wave reaches the bottom of the model during the process of deformation due to the reflection of the plastic wave, whereas the plateau stress rises with an increase in the loading rate.

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Simulation of Apparent Elastic Property in the Two-Dimensional Model of Aluminum Foam Sandwich Panels

Cited by 7 publications

References 14 publications

Numerical simulations of effective thermal conductivity in aluminum foam sandwich panel

Numerical simulations of effective thermal conductivity in aluminum foam sandwich panel

Effect of Parametric Variations on the Local Compression Deformation of Aluminum Foam Sandwich Panels

Simulation of Effect of Loading Rate on Compression Properties in the Two-Dimensional Model of Aluminum Foam Sandwich Panels

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