How can I calculate the elastic constant using the elastic code?

14 February 2015 1 4K Report

I am already using Quantum espresso. Now I want to calculate the elastic constant using the Elastic code. Can anyone suggest the way to do it?

Mehdi Veiskarami

I do not understand what you are about to do. I assume that you have an "elastic response" and want to extract elastic constants. If so, you will need at least two responses, say stress-axial strain and volume change- shear strain. In such cases, if the material is absolutely linear, elastic and isotropic, you will be able to find the constant by a system of two equations for two (corresponding) unknowns.

Hope to be useful

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