ElaStr - Elasticity and crystal Structure

An online tool for analysis and 3D visualization of elastic properties in crystal structure and lattice coordinate system. The 3D visualisation is performed using VESTA file format.

The tool is developed by Martin Zelený at Faculty of Mechanical Engineering Brno University of Technology.

Any queries or comments are welcome at zeleny@fme.vutbr.cz.

The basic functionality and methodology are explained in this talk given by M. Zelený at the MSMF11 conference.

Disclaimer: This online analysis tool is provided "as is" and is still under development. Use of this tool is at your own risk. We make no guarantees regarding the accuracy, reliability, or suitability of the results for any specific purpose. By using this tool, you acknowledge that we are not responsible for any errors, data loss, or unintended consequences arising from its use. Always verify results independently (for example in famous tool for analysis of elastic properties ELATE) before making any decisions based on them.

Enter a 6×6 Matrix of elastic constants

Enter numbers separated by spaces. Each row must be on a new line.


How do you want to describe crystal structure

By a POSCAR VASP file By lattice vectors only

Orientation of the structure in space must correspond to orientation of the matrix of elastic constants!!!

Paste a content of POSCAR VASP file

Maximal number of allowed atoms is 100.

Or do you need to rotate the matrices first?

Enter 3 Miller indices [u v w] of a lattice direction

Enter 3 numbers separated by spaces.


Enter 3 Miller indices (h k l) of a lattice plane

Enter 3 numbers separated by spaces.

Are you using the four-index Miller–Bravais notation for the hcp lattice?
It can be used as input, but ElaStr will convert it to the standard three-index notation.


Creation of this page was supported by UNIGOU Remote program provided by Institute of Czech-Brazilian Academic Cooperation.

Logo IMSE FME VUT, INCBAC and UNIGOU