3D Numerical Simulation of Aluminum Foams Behavior in Large Deformation

2015 ◽  
Vol 749 ◽  
pp. 3-7
Author(s):  
Abel Cherouat ◽  
Shi Jie Zhu ◽  
Houman Borouchaki ◽  
Xiao Lu Gong

The compression characteristics of open-cell aluminum foams were experimentally and numerically investigated. It is found that the mechanical parameters, such as collapse stress and absorbed energy, are dependent on the porosity of aluminum foams material. During simulation of metal foam compression, the finite elements distort severely at the local regions with high gradient of physical field. The procedure integrates Explicit solver of Abaqus FEA, 3D Optiformmesher and Python script program transfer to execute step by step the incremental deformation of deformable body.

2015 ◽  
Vol 1099 ◽  
pp. 17-24
Author(s):  
Shi Jie Zhu ◽  
Abel Cherouat ◽  
Houman Borouchaki ◽  
Xiao Lu Gong

The compression characteristics of open-cell aluminum foams were experimentally and numerically investigated. It is found that the mechanical parameters, such as collapse stress and absorbed energy, are dependent on the porosity of aluminum foams. Three macroscopic models were chose to predict the compression behavior of open-cell foams. During simulation of metal foam compression, the finite elements distort severely at the local regions with high gradient of physical field such as stress, strain due to these problems. The procedure integrates Explicit solver of ABAQUS, OPTIFORM mesher and python script program transfer to execute step by step the incremental deformation process. At each step, the meshes are refined and coarsened automatically based on geometrical and physical error estimations; the physical fields are transferred from old to the new one using advanced algorithm.


Author(s):  
Nihad Dukhan ◽  
Pablo D. Quinones

A one-dimensional heat transfer model for open-cell metal foam is presented. Three aluminum foams having different areas, relative densities, ligament diameters, and number of pores per inch were analyzed. The effective thermal conductivity and the heat transfer increased with the number of pores per inch. The effective thermal conductivity of the foams can be up to four times higher than that of solid aluminum. The resulting improvement in heat transfer can be as high as 50 percent. The maximum heat transfer for the aluminum foams occurs at a pore Reynolds number of 52. The heat transfer, in addition, becomes insensitive to the flow regime for pore Reynolds numbers beyond 200.


2021 ◽  
Author(s):  
Sunil Mehendale

Abstract A one-dimensional analytical validated model for predicting temperature distribution, heat transfer, pressure drop, and fluid pumping power in an open cell metal foam (OCMF) fin is developed. A foam length optimization technique based on its performance factor (PF) is proposed. Every optimized foam's efficiency is shown to be 33.2%, regardless of its PPI or porosity. Although it can be applied to other porous materials, the model has been illustrated for aluminum foams with 5-40 pores per inch (PPI) and 0.88-0.96 porosity (e). The highest PPI, lowest porosity foam gives the best unit area goodness factor f_u=j_H/f, heat transfer, and heat transfer per unit volume Q ?_V, while the greatest goodness factor f (heat transfer rate to fluid pumping power) is achieved by the lowest PPI, lowest porosity foam. The highest PPI, highest porosity foam yields the best heat transfer per unit mass Q ?_M. Thus, optimum foam selections strongly depend on the application. An often used fin optimization criterion recommends that the fin effectiveness should equal or exceed 2. The present study shows that the effectiveness of any optimized foam always exceeds 2. However the converse, i.e., requiring the foam effectiveness to at least equal 2, does not guarantee an optimal foam, which implies that the PF-based optimization criterion is an inclusive one. It is also proved that a previously suggested optimization criterion of maximizing a foam's geometric mean efficiency will result in a sub-optimal foam design.


2020 ◽  
Vol 110 ◽  
pp. 109941 ◽  
Author(s):  
F. Shikh Anuar ◽  
Kamel Hooman ◽  
M.R. Malayeri ◽  
Iman Ashtiani Abdi

2018 ◽  
Vol 83 (1) ◽  
pp. 10904 ◽  
Author(s):  
Abdelatif Merabtine ◽  
Nicolas Gardan ◽  
Julien Gardan ◽  
Houssem Badreddine ◽  
Chuan Zhang ◽  
...  

This study focuses on the thermal analysis and comparing a lattice model and an optimized model of open-cell metal foams manufactured thanks to a metal casting process. The topological optimization defines the complex geometry through thermal criteria and a plaster mold reproduces it in 3D printing to be used in casting. The study of the thermal behavior conducted on the two open foam metal structures is performed based on several measurements, as well as numerical simulations. It is observed that the optimized metal foam presented less and non-homogenous local temperature than the lattice model with the gap of about 10 °C between both models. The pore size and porosity significantly affect the heat transfer through the metal foam. The comparison between numerical simulations and experimental results regarding the temperature fields shows a good agreement allowing the validation of the developed three-dimensional model based on the finite element method.


2005 ◽  
Vol 59 (26) ◽  
pp. 3333-3336 ◽  
Author(s):  
B. Jiang ◽  
N.Q. Zhao ◽  
C.S. Shi ◽  
X.W. Du ◽  
J.J Li ◽  
...  

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