3D Hopkinson bar: new experiments for dynamic testing on soils.

J. F. Semblat (1) , M. P. Luong (2) , G. Gary (2)

1 LCPC/MSRGI - Division Mécanique des Sols des Roches et de la Géologie de l'Ingénieur
2 LMS - Laboratoire de mécanique des solides

The direct analysis of the dynamic response of materials is possible using Split Hopkinson pressure bar method. For soils, it has to be adapted since the specimen has generally poor mechanical properties. An original experimental arrangement called "Three-Dimensional Split Hopkinson Pressure Bar" (3D SHPB) is proposed. It allows the measurement of the complete three-dimensional dynamic response of soils. Different types of confinement systems are used. The results on different loading paths are compared with other works on sand and clay. The analysis at grain-size level gives further elements on the comminution process.

Mots clés: soil dynamics; Hopkinson bar; fast dynamics

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]

J. F. Semblat, M. P. Luong, G. Gary. 3D Hopkinson bar: new experiments for dynamic testing on soils.. Soils and Foundations, 1999, 39, pp.1-10. ⟨hal-00111624⟩