: For static high-pressure testing, samples are compressed between two flawless diamond culets. Coupled with synchrotron X-ray diffraction, DACs map out the crystal structures and volume changes ( ) at precise hydrostatic pressures. Computational Approaches
Many materials (e.g., iron, quartz, Sn) undergo phase transformations under shock. The strength changes dramatically across the phase boundary. New models (e.g., Gurson–Tvergaard–Needleman for void growth combined with phase field) are under development. equation of state and strength properties of selected
When a material is stressed beyond its elastic limit, it yields. Yield surfaces (such as the von Mises or Tresca criteria) define the boundary between elastic and plastic behavior. In high-pressure physics, specialized constitutive models track how this yield stress changes: : For static high-pressure testing, samples are compressed
Zap material surfaces, causing rapid ablation that drives intense shock waves forward into the sample. The strength changes dramatically across the phase boundary
Aluminum follows a highly predictable, linear