#shear jamming

[fuckyeahfluiddynamics]

Stably Jammed

Granular materials like sand, gravel, and medications can become a rigid mass when squeezed or sheared. Even with a relatively loose packing, these materials can jam together to act like a solid if the contacts between grains no longer allow particles to shift or rotate. (Image and video credit: Y. Zhao et al., research pre-print)