[lammps-users] help for elastic constants

I have some bulk systems and want to calculate elastic constants. (stress, strain, and stiff matrix along with all the other moduli)

Manual said to deform box in one direction using displace_box and measure the change in the stress tensor.

And also said that examples/elastic directory would contain example input scripts, but there were no elastic directory in example part.

Can any of you give me some hints or input commands that can calculate elastic constants?

Thank you!

Section 4.18 of the manual explains how to do this. If you don’t
have an examples/elastic dir, then you don’t have the most
current version of the code. Please download it.

Steve

2010/5/27 백은수 <[email protected]…1911…>