Macro- and micro-mechanical investigations on liquefaction behaviour of granular material under bi-directional simple shear

Zhang, Min; Yang, Yongtao; Zhang, Hanwen; Thom, Nick; Yu, Hai‐Sui

doi:10.1007/s10035-021-01155-w

Cited by 4 publications

(1 citation statement)

References 51 publications

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“…Rolling friction is not considered in this work. Similarly, the damping force, Fdi [43], consists of a normal damping force,…”

Section: Dem Model With Adhesionmentioning

confidence: 99%

Exploring the Regimes of Particle Behavior upon Impact via the Discrete Element Method

Nguyen,

Curtis,

Salari

2024

Pharmaceutics

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Discrete element method simulations are conducted to probe the various regimes of post-impact behavior of particles with solid surfaces. The impacting particles are described as spherical agglomerates consisting of smaller constituent (or primary) particles held together via surface adhesion. Under the influence of a wide range of impact velocities and particle surface energies, five distinct behavioral regimes—rebounding, vibration, fragmentation, pancaking, and shattering—are identified, and force transmission patterns are linked to post-impact behavior. In the rebounding regime, the coefficient of restitution decreases linearly as impact velocity increases and the particle agglomerate experiences compaction. In the fragmentation regime, rebound velocity generally decreases with increasing fragment size. The rebound velocity of fragments decreases with time except for the smallest fragments, which can increase in velocity due to collisions with other fragments of high velocity. Particle breakage in the pancaking regime does not follow common mechanistic models of breakage.

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“…Rolling friction is not considered in this work. Similarly, the damping force, Fdi [43], consists of a normal damping force,…”

Section: Dem Model With Adhesionmentioning

confidence: 99%