MD simulations of shock propagation and spallation in polymers

From Nuwan Dewapriya Mallika Arachchige February 24, 2025

2 plays 0 comments You unliked the media.

Our latest article on MD simulations of shock propagation and spallation in polymers has been published in the Journal of Applied Mechanics: https://doi.org/10.1115/1.4051238

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.

Tags: molecular dynamics

Department Name: CCM
Department Division: Engineering
Appears In: Center for Composite Materials

Comments

Add a comment