Shear Thickening and Jamming of Dense Suspensions: The “Roll” of Friction

Singh, Abhinendra; Ness, Christopher; Seto, Ryohei; Pablo, Juan J. de; Jaeger, Heinrich M.

doi:10.1103/physrevlett.124.248005

Cited by 101 publications

(116 citation statements)

References 51 publications

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“…Working in the overdamped limit, we neglect any viscous dissipation in the interparticle interaction. In the granular model, we also neglect the presence of rolling friction [18] we expect not to qualitatively affect our results, in analogy with recent findings [19] on the role of rolling friction on discontinuous shear thickening. The value of k n is chosen to work in the hard-sphere limit, the maximum deformation of a particle being of order δ/σ 5 × 10 −4 .…”

Section: Numerical Modelsupporting

confidence: 85%

Frictional active Brownian particles

et al. 2020

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Frictional forces affect the rheology of hard-sphere colloids, at high shear rate. Here we demonstrate, via numerical simulations, that they also affect the dynamics of active Brownian particles and their motility-induced phase separation. Frictional forces increase the angular diffusivity of the particles, in the dilute phase, and prevent colliding particles from resolving their collision by sliding one past to the other. This leads to qualitatively changes of motility-induced phase diagram in the volume-fraction motility plane. While frictionless systems become unstable towards phase separation as the motility increases only if their volume fraction overcomes a threshold, frictional systems become unstable regardless of their volume fraction. These results suggest the possibility of controlling the motility-induced phase diagram by tuning the roughness of the particles.

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Section: Numerical Modelsupporting

confidence: 85%

Frictional active Brownian particles

et al. 2020

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“…In formulating the model, we took inspiration from recent work on the effects of friction in jammed systems [21][22][23][24][25][26][27]. However, unlike the standard granular friction model [28,29], we did not incorporate memory effects into the generation of ω i , i.e., our single-particle dynamics is Markovian.…”

mentioning

confidence: 99%

Autonomously Probing Viscoelasticity in Disordered Suspensions

et al. 2020

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Recent experiments show a strong rotational diffusion enhancement for self-propelled microrheological probes in colloidal glasses. Here, we provide microscopic understanding using simulations with a frictional probe-medium coupling that converts active translation into rotation. Diffusive enhancement emerges from the medium's disordered structure and peaks at a second-order transition in the number of contacts. Our results reproduce the salient features of the colloidal glass experiment and support an effective description that is applicable to a broader class of viscoelastic suspensions.

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“…The shear thickening effect occurs at lower critical shear rates for STFs with larger particle size which has a good agreement with the rheological results reported by Lee et al 28 The hydro-clusters approach in recent investigations suggested that the contact forces among the silica particles would form a network in the suspension. 29 Therefore, the silica particles with bigger size were found more easily to contact with each other, thereby inducing the lower critical shear rate.…”

Section: Rheological Property Of Stfmentioning

confidence: 99%

Effect of particle size of fumed silica on the puncture resistance of fabrics impregnated with shear thickening fluid

Yuan

Qiu

2021

Journal of Engineered Fibers and Fabrics

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This paper presents an investigation into the effect of particle size of fumed silica on the puncture resistance of fabric impregnated with shear thickening fluid (STF). Two different types of STF were fabricated from fumed silica nanoparticles with particle sizes of 12 and 40 nm respectively. The effects of the particle size and weight fraction of the fumed silica on the rheological property were studied. STFs impregnated woven fabrics were fabricated and tested for stabbing resistance. STFs made of fumed silica with large particle size have better shear thickening effect. The stabbing resistant performance of STF impregnated fabrics improved notably with the same number of layers of fabric, and STFs impregnated fabric panels also outperform the untreated fabric panels with the same areal density. The results indicated that STFs made of fumed silica with larger particle size is able to fabricate a lighter soft body armor with higher stabbing protection.

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Shear Thickening and Jamming of Dense Suspensions: The “Roll” of Friction

Cited by 101 publications

References 51 publications

Frictional active Brownian particles

Frictional active Brownian particles

Autonomously Probing Viscoelasticity in Disordered Suspensions

Effect of particle size of fumed silica on the puncture resistance of fabrics impregnated with shear thickening fluid

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