ITP OpenIR  > SCI期刊论文
Babu, Varghese; Pan, Deng1; Jin, Yuliang1,2; Chakraborty, Bulbul3; Sastry, Srikanth
Dilatancy, shear jamming, and a generalized jamming phase diagram of frictionless sphere packings
Source PublicationSOFT MATTER
Language英语
KeywordDENSE EQUILIBRIUM SOFT
AbstractGranular packings display the remarkable phenomenon of dilatancy, wherein their volume increases upon shear deformation. Conventional wisdom and previous results suggest that dilatancy, also being the related phenomenon of shear-induced jamming, requires frictional interactions. Here, we show that the occurrence of isotropic jamming densities phi (j) above the minimal density (or the J-point density) phi (J) leads both to the emergence of shear-induced jamming and dilatancy in frictionless packings. Under constant pressure shear, the system evolves into a steady-state at sufficiently large strains, whose density only depends on the pressure and is insensitive to the initial jamming density phi (j). In the limit of vanishing pressure, the steady-state exhibits critical behavior at phi (J). While packings with different phi (j) values display equivalent scaling properties under compression, they exhibit striking differences in rheological behaviour under shear. The yield stress under constant volume shear increases discontinuously with density when phi (j) > phi (J), contrary to the continuous behaviour in generic packings that jam at phi (J). Our results thus lead to a more coherent, generalised picture of jamming in frictionless packings, which also have important implications on how dilatancy is understood in the context of frictional granular matter.
2021
ISSN1744-683X
Volume17Issue:11Pages:3121-3127
Cooperation Status国际
Subject AreaChemistry ; Materials Science ; Physics ; Polymer Science
MOST Discipline CatalogueChemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary ; Polymer Science
DOI10.1039/d0sm02186e
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27305
CollectionSCI期刊论文
Affiliation1.Jawaharlal Nehru Ctr Adv Sci Res, Jakkur Campus, Bengaluru 560064, India
2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
4.Brandeis Univ, Martin Fisher Sch Phys, Waltham, MA 02454 USA
Recommended Citation
GB/T 7714
Babu, Varghese,Pan, Deng,Jin, Yuliang,et al. Dilatancy, shear jamming, and a generalized jamming phase diagram of frictionless sphere packings[J]. SOFT MATTER,2021,17(11):3121-3127.
APA Babu, Varghese,Pan, Deng,Jin, Yuliang,Chakraborty, Bulbul,&Sastry, Srikanth.(2021).Dilatancy, shear jamming, and a generalized jamming phase diagram of frictionless sphere packings.SOFT MATTER,17(11),3121-3127.
MLA Babu, Varghese,et al."Dilatancy, shear jamming, and a generalized jamming phase diagram of frictionless sphere packings".SOFT MATTER 17.11(2021):3121-3127.
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