Shock-induced deformation in wetted particle beds

18th APS-SCCM; 24th AIRAPT

Marr, Bradley J.^1 ; Petel, Oren E.^2 ; Frost, David L.^1 ; Higgins, Andrew J.^1 ; Ringuette, Sophie^3

Department of Mechanical Engineering, McGill University, Montral

QC

H3A 0C3, Canada^1

Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa

ON

K1S 5B6, Canada^2

Defence Research and Development Canada Valcartier, Val-Blair

QC

G3J 1X5, Canada^3

关键词: Critical condition;    Fracturing response;    High strain rates;    Mean particle size;    Particle deformation;    Particle size ranges;    Shock compressions;    Transmitted shock;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/11/112044/pdf
DOI  :  10.1088/1742-6596/500/11/112044

来源: IOP

【 摘 要 】

The high-strain-rate response of granular media has received considerable attention due to increasing interest in granular penetration. In the present study, we investigate the response of wetted packed particle beds under varying flyer plate-induced shock loadings. We investigate the critical conditions for the onset of particle deformation in systems of spherical macroscopic glass beads. Resulting particle deformations from the shock compression are characterized using microscopy as well as particle size analysis, and the effects of shock strength are compared. A fracturing response with a bimodal particle distribution is observed, with an increasing shift to the lower particle size range as shock loading is initially increased. As the transmitted shock pressure exceeds 1 GPa, a significant decrease in the mean particle size is observed.