264 citations · 372 across the 6 of their papers we have counts for
7 papers
Tensile Stress Relaxation in Unsaturated Granular Materials
Filippo Bianchi, Marcel Thielmann, Roman Mani +2
The mechanics of granular media at low liquid saturation levels remain poorly understood. Macroscopic mechanical properties are affected by microscale forces and processes, such as…
The Role of Contact Angle Hysteresis for Fluid Transport in Wet Granular Matter
Roman Mani, Ciro Semprebon, Dirk Kadau +3
The stability of sand castles is determined by the structure of wet granulates. Experimental data about the size distribution of fluid pockets are ambiguous about their origin. We…
Grain Scale Modeling of Arbitrary Fluid Saturation in Random Packings
Konstantin Melnikov, Roman Mani, Falk K. Wittel +2
We propose a model for increasing liquid saturation in a granular packing which can account for liquid redistribution at saturation levels beyond the well-studied capillary bridge…
Crazy 1d billiards: Behavior of spring-fixated, noisy colliding particles
Roman Mani, Lucas Böttcher, Hans J. Herrmann +1
We study a one-dimensional system of spatially extended particles, which are fixated to regularly spaced locations by means of elastic springs. The particles are assumed to be driv…
Microscopic mechanism for the shear-thickening of non-Brownian suspensions
Nicolas Fernandez, Roman Mani, David Rinaldi +7
We propose a simple model, supported by contact-dynamics simulations as well as rheology and friction measurements, that links the transition from continuous to discontinuous shear…
Liquid migration in sheared unsaturated granular media
Roman Mani, Dirk Kadau, Hans J. Herrmann
We show how liquid migrates in sheared unsaturated granular media using a grain scale model for capillary bridges. Liquid is redistributed to neighboring contacts after rupture of…
Fluid depletion in shear bands
Roman Mani, Dirk Kadau, Dani Or +1
How does pore liquid reconfigure within shear bands in wet granular media? Conventional wisdom predicts that liquid is drawn into dilating granular media. We, however, find a deple…