Rate-dependent residual weakening
Experiments reveal that residual shear strength of submerged granular media decreases significantly with increasing shear strain rate, providing key evidence for small-angle long-runout submarine landslides.
Zheng, Hu · Guowei, Dai · Mao, Wuwei · Huang, Yu
Journal of Earth Science 2023
Shear strain rate spans five orders of magnitude: 10⁻⁴ to 10¹ s⁻¹
Yield strength increases with shear strain rate
Residual strength decreases with increasing shear strain rate; even small variations at low rates cause notable differences