On the estimates for the elastic moduli of random Voronoi triclinic polycrystals

Vietnam Journal of Mechanics

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Field Value
 
Title On the estimates for the elastic moduli of random Voronoi triclinic polycrystals
 
Creator Pham, Duc-Chinh
 
Subject effective elastic moduli; random Voronoi polycrystal; triclinic crystal; scatter measures of the estimates
 
Description Our major new results and the previous ones on the bounds for elastic random polycrystals, and most advanced 3D finite element results for random 3D Voronoi polycrystals are resumed and analysed (together for the first time). Recently obtained numerical Dirichlet and Neumann simulation results for the effective elastic moduli of a large 10000-grain-size random Voronoi polycrystal representative volume element (RVE) for a number of triclinic and monoclinic base crystals (Mursheda and Ranganathan, 2017) are compared critically with the bounds on the moduli. Though major parts within the simulation results fall within the bounds of Pham (2011), some Dirichlet upper estimates still lie outside the bounds. Many more RVEs are needed to represent the Voronoi polycrystal on the same RVE-size-level, and larger RVEs are needed for checking the convergence and comparisons with the bounds.
 
Publisher Publishing House for Science and Technology
 
Contributor
 
Date 2020-12-27
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion

 
Format application/pdf
 
Identifier http://vjs.ac.vn/index.php/vjmech/article/view/14795
10.15625/0866-7136/14795
 
Source Vietnam Journal of Mechanics; Vol 42, No 4 (2020); 427-434
Vietnam Journal of Mechanics; Vol 42, No 4 (2020); 427-434
0866-7136
0866-7136
 
Language eng
 
Relation http://vjs.ac.vn/index.php/vjmech/article/view/14795/pdf
http://vjs.ac.vn/index.php/vjmech/article/downloadSuppFile/14795/3443
 
Rights Copyright (c) 2020 Vietnam Academy of Science and Technology
 

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