Validation of High-Resolution Calculations to Inform Continuum Model Development

Accurately modeling shock loading of composite materials presents challenges for continuum (accurate modeling shock time and breakout velocity). In this work, we develop high-resolution models capable of capturing salient details of the material, which are then validated against experimental results. In addition, these high-resolution models are then used to validate and improve a series of continuum models (P-alpha to treat porosity). This work will focus on studying polymer foams across a series of densities where large volume collapses occur upon shock loading. These models resolve the porosity, which is not possible in large-scale continuum calculations. The approach of validating high-resolution models to aid in the development of continuum models is unusual. Validation is usually performed on the continuum level with perhaps high-resolution calculations informing additional model development. While this approach is not ideal for all applications, this work will discuss a series of applications where such approaches have large benefits.