Introduction

This is an open source code to calculate the higher order elastic constants(HOECs) from first principles.

Features

The software is design for post processing the elastic stiffness matrix, it has several feathers, which are listed as follows:

    1. For 3D materials in any symmetry, supporting the elastic anisotropy of bulk modulus, Young’s modulus, shear modulus, Poisson’s ratio and hardness in 3D;
    1. For 2D materials in any symmetry, supporting the elastic anisotropy of Young’s modulus, shear modulus and Poisson’s ratio;
    1. Supporting *.xlsx, *.xls, *.txt, *.dat and *.mat data format;
    1. Supporting Voigt-Reuss-Hill approximation to average the elastic modulus;
    1. Supply some useful tools for 3D figures, such as slice and view point;
    1. Supporting *.tif, *.jpg, *.emf, *.eps, *pdf, *.fig figure format;
    1. Supporting Windows and Linux system;
    1. It will give some tips for errors(Marked in red in the bottom of the GUI).

Release

TODO