High Pressure

Shock Physics

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Figure 1: Schematic of a shockwave induced by a laser pulse

Shock Physics

Shock compression is a mechanical solicitation that drives materials to high levels of pressure and temperature, and can trigger many complex processes such as phase transitions, fragile or ductile damaging, matter ejection for inert materials or detonation for the case of energetic materials.

The responses of these materials are thoroughly studied using experimental set-ups, such as state-of-the-art nanosecond laser facilities (GCLT) and plates impacts experiments, or numerical approaches from the atomistic level (molecular dynamics, mesoscale simulations) to continuum mechanics coupled to High Performance Computing infrastructures.

Fields of application include the fundamental understanding of the build-up of shockwaves and detonation waves, the determination of thermodynamics properties of shocked states, and the mechanisms of their propagation, interaction and effect on materials with potentially complex geometries.

Publications

  1. L. Soulard, Th. Carrard and O. Durand.Molecular dynamics study of the impact of a solid drop on a solid target, J. Appl. Phys. 131, 135901 (2022) DOI
  2. O. Durand, L. Soulard, L. Colombet, and R. Prat, Influence of the phase transitions of shock-loaded tin on microjetting and ejecta production using molecular dynamics simulations, J. Appl. Phys. 127, 175901 (2020) DOI
  3. Arnaud Sollier, Philippe Hébert, and Roland Letremy, Chemical reaction zone measurements in pressed trinitrotoluene (TNT) and comparison with triaminotrinitrobenzene (TATB), J. Appl. Phys. 131, 055902 (2022) DOI
  4. Sollier, Arnaud and Lescoute, Emilien, Characterization of the ballistic properties of ejecta from laser shock-loaded samples using high resolution picosecond laser imaging, Int. J. Impact Eng., 136 103429 (2020) DOI
  5. Gérôme Faure, Jean-Bernard Maillet, Julien Roussel and Gabriel Stoltz, Size consistency in smoothed dissipative particle dynamics, PHYSICAL REVIEW E 94, 043305 (2016) DOI

Researchers involved

L. Soulard, A. Sollier, J.-B. Maillet, C. Lemarchand, N. Pineau, P. Lafourcade, N. Bruzy, C. Denoual, B. Jodar, L. Videau