MD simulations of shock propagation and spallation in polymers

Our article on MD simulations of shock propagation and spallation in polymers has been published in the Journal of Applied Mechanics.

In this article, we computed the spall strength of polyurethane samples by following two methods:
(1) The indirect method (from the free surface velocity history, which is commonly used in experiments)
(2) A direct method (from the atomic stresses in the spall region, which is possible only in MD)

The results reveal that the tensile strength computed from the indirect method is consistently smaller than the value obtained from the direct method. Moreover, the strength computed from the indirect method shows a noticeable agreement with the fracture nucleation stress. You can download the MD model from here: https://github.com/nuwan-d/MD_model_JAM-21-1174 

One of the impressive characteristics of J. Appl. Mech. is their rapid review process. The paper was accepted within 4 weeks from the submission. Apparently, the editor-in-chief Prof. Huang and associate editor Prof. Kulkarni processed our article within a day. We had a similar experience with our previous publication as well.