Plate-impact-driven ring expansion test (PIDRET) for dynamic fragmentation

Fanny Gant (1) , Gabriel Seisson (2) , Patrice Longère (1) , Skander El Maï (2) , Jean-Luc Zinszner (2)

1 ICA - Institut Clément Ader
2 CEA - Centre de Gramat

A new experimental setup mounted at the muzzle of a singlestage gas gun has been designed in order to study the fragmentation of metallic rings under dynamic radial expansion. This concept takes advantage of the quasi-incompressibility of HDPE whose radial flow under plate impact-like loading is used to apply a pressure boundary condition at the ring's inner surface. For the experimental configurations considered in the present work, the average strain rate in the ring reaches values close to 10 4 s-1. The repeatability and the reliability of the experiments are verified for rings made of steel and aluminium.

Domaines: Mécanique des matériaux [physics.class-ph]

Fanny Gant, Gabriel Seisson, Patrice Longère, Skander El Maï, Jean-Luc Zinszner. Plate-impact-driven ring expansion test (PIDRET) for dynamic fragmentation. DYMAT 2021 - 13th International Conference on Mechanical and Physical Behaviour of Materaisl Under Dynamic Loading - Madrid (Spain) - Sept.19-24, 2021, Sep 2021, Madrid, Spain. ⟨10.1051/epjconf/202125001013⟩. ⟨hal-03351089⟩