Shivakumar Athani
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View article: Transients in shear thickening suspensions: When hydrodynamics matters
Transients in shear thickening suspensions: When hydrodynamics matters Open
International audience
View article: Unifying suspension and granular shear-induced self-diffusion
Unifying suspension and granular shear-induced self-diffusion Open
Shear-induced self-diffusion is a fundamental mode of transport in granular flows. Yet its critical behaviour and dependence on the particle solid fraction are still unclear. Here, we rationalize these dependencies by performing two-dimens…
View article: Fatigue failure in glasses under cyclic shear deformation
Fatigue failure in glasses under cyclic shear deformation Open
Solids subjected to repeated cycles of stress or deformation can fail after several cycles, a phenomenon termed fatigue failure. Although intensely investigated for a wide range of materials owing to its obvious practical importance, a mic…
View article: Transients in shear thickening suspensions: when hydrodynamics matters
Transients in shear thickening suspensions: when hydrodynamics matters Open
Using particle-based numerical simulations performed under pressure-imposed conditions, we investigate the transient dilation dynamics of a shear thickening suspension brought to shear jamming. We show that the stress levels, instead of di…
View article: Transient flows and migration in granular suspensions: key role of Reynolds-like dilatancy
Transient flows and migration in granular suspensions: key role of Reynolds-like dilatancy Open
We investigate the transient dynamics of a sheared suspension of neutrally buoyant particles in pressure-imposed rheology configuration, subject to a sudden change in shear rate or external pressure. Discrete element method simulations sho…
View article: Transient flows and migration in granular suspensions: key role of Reynolds-like dilatancy
Transient flows and migration in granular suspensions: key role of Reynolds-like dilatancy Open
We investigate the transient dynamics of a sheared suspension of neutrally buoyant particles under pressure-imposed conditions, subject to a sudden change in shear rate or external pressure. Discrete Element Method simulations show that, d…
View article: Transients in pressure-imposed shearing of dense granular suspensions
Transients in pressure-imposed shearing of dense granular suspensions Open
Granular materials whether dry or immersed in fluid show dilation or compaction depending upon the initial conditions, solid fraction and normal stress. Here we probe the transient response of a dense granular suspension subjected to chang…
View article: Inertial drag in granular media
Inertial drag in granular media Open
Like in liquids, objects moving in granular materials experience a drag force. We investigate here whether and how the object acceleration affect this drag force. The study is based on simulations of a canonical drag test, which involves v…
View article: Grain-size effect on uplift capacity of plate anchors in coarse granular soils
Grain-size effect on uplift capacity of plate anchors in coarse granular soils Open
This letter investigates the uplift capacity of plate anchors in granular soils. Simulations based on a discrete-element method are used to measure the uplift capacity of anchors of differing widths to embedment B/H and width to grain-size…
View article: Seepage and Stability Analyses of Earth Dam Using Finite Element Method
Seepage and Stability Analyses of Earth Dam Using Finite Element Method Open
Dams are mainly constructed of earth and rock-fill materials and hence they are generally referred to as embankment dams or fill-type dams. Earth-fill dams are simple structures which are able to prevent the sliding and overturning because…