Homogenization of the average thermo-elastoplastic properties of particle reinforced metal matrix composites: The minimum representative volume element size

2014 ◽  
Vol 113 ◽  
pp. 459-468 ◽  
Author(s):  
X.X. Zhang ◽  
B.L. Xiao ◽  
H. Andrä ◽  
Z.Y. Ma
Keyword(s):  
Metal Matrix Composites ◽  
Representative Volume Element ◽  
Metal Matrix ◽  
Volume Element ◽  
Matrix Composites ◽  
Representative Volume ◽  
Element Size ◽  
Elastoplastic Properties ◽  
Representative Volume Element Size

The Minimum Representative Volume Element Size for Coefficient of Thermal Expansion of Particle Reinforced Metal Matrix Composites

2013 ◽  
Vol 773 ◽  
pp. 435-440
Author(s):  
X.X. Zhang ◽  
B.L. Xiao ◽  
Z.Y. Ma
Keyword(s):  
Thermal Expansion ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Coefficient Of Thermal Expansion ◽  
Three Dimensional ◽  
Analytical Models ◽  
Matrix Composites ◽  
Element Size ◽  
Representative Volume Element Size ◽  
Sharp Edges

A 3D realistic microstructure based computational homogenization model is proposed, in order to determine the temperature dependent effective coefficient of thermal expansion of particle reinforced metal matrix composites The model employed three-dimensional realistic microstructures with different domain sizes, where particles had random shape, sharp edges and were randomly distributed. The unit cell microstructure based model and classical analytical models were also presented for comparison. As an illustration of the model, a 17% vol. SiCpreinforced 2124Al composite was investigated. Its minimum RVE size is found to beδ= 15, whereδis called the size ratio and defined by the ratio between the side length of microstructure and the mean particle radius.

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