Multi-phase ELAStic Aggregates (MELASA) software tool for modeling anisotropic elastic properties of lamellar composites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00517187" target="_blank" >RIV/68081723:_____/20:00517187 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14610/20:00113974

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0010465519302504?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0010465519302504?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cpc.2019.106863" target="_blank" >10.1016/j.cpc.2019.106863</a>

Result language

angličtina

Original language name

Multi-phase ELAStic Aggregates (MELASA) software tool for modeling anisotropic elastic properties of lamellar composites

Original language description

We introduce a new web-based tool called MELASA (Multi-phase ELAStic Aggregates), open-access available at https://melasa.cerit-sc.cz, for computations and visualizations of anisotropic elastic properties of lamellar (nano-)composites. MELASA implements a linear-elasticity method by Grimsditch and Nizzoli (1986), originally developed for superlattices of any symmetry. Our tool may be used for computation of anisotropic elastic properties of a specific type of periodically separated lamellar (nano-)composites using matrices of elastic stiffnesses of co-existing phases as an input. Elastic properties are visualized in the form of directional dependencies of selected elastic characteristics (Young's modulus and linear compressibility). MELASA further generalizes the Grimsditch–Nizzoli approach, which was originally formulated for only two phases, to multiple-phase composites. Additionally, our implementation allows for treating internal rotations of local coordination systems corresponding to the natural set of coordinates that match directional vectors of unit cell defining crystal lattice within the co-existing phases. Fe–Al-based superalloy nanocomposites are employed as a numerical example of superlattices with the input and output elastic stiffnesses determined by quantum-mechanical calculations. In particular, three different atomic configurations of interfaces in superlattices containing the ordered Fe3Al phase and a disordered Fe–Al phase with 18.75at.%Al (modeled by a special quasi-random structure, SQS) are considered. They differ by relative positions of sublattices in Fe3Al (an antiphase-like shift) and/or atomic planes in Fe-18.75at.%Al with respect to the interface (a circular/cyclic shift). Program summary: Program title: MELASA Program files doi: http://dx.doi.org/10.17632/rzc2yd2rvc.1 Licensing provisions: MIT license Programming language: JavaScript Nature of problem: Computations and visualizations of anisotropic elastic properties of lamellar (nano-)composites/superlattices Solution method: Implementation of a linear-elasticity method by M. Grimsditch and F. Nizzoli [1], originally derived for superlattices of any symmetry. MELASA computes anisotropic elastic properties of a specific type of periodically separated lamellar (nano-)composites using matrices of elastic stiffnesses of co-existing phases as input. Elastic properties are visualized in the form of directional dependencies of selected elastic characteristics (Young's modulus and linear compressibility). Additional comments including restrictions and unusual features: MELASA generalizes the Grimsditch–Nizzoli approach, which was originally formulated for only two phases, to multiple-phase composites. Additionally, our implementation allows for treating internal rotations of local coordination systems corresponding to the natural set of coordinates that match directional vectors of unit cell defining crystal lattice within the co-existing phases.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Computer Physics Communications

ISSN

0010-4655

e-ISSN

—

Volume of the periodical

247

Issue of the periodical within the volume

FEB

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

106863

UT code for WoS article

000503093400014

EID of the result in the Scopus database

2-s2.0-85071125354