894 citations · 3.8k across the 59 of their papers we have counts for
62 papers
GEMSS: A C++ Library for Multi-Sphere Modeling in DEM Simulations
Arash Moradian, Felix Buchele, Thorsten Poeschel
GEMSS (GEnerator of Multi-Sphere Shapes) converts 3D surface meshes or voxel grids into multi-sphere representations of granular particles using the recently published MSS algorith…
Enhanced Interlocking in Granular Jamming Grippers through Hard and Soft Particle Mixtures
Angel Santarossa, Thorsten Pöschel
We investigate the influence of particle stiffness on the grasping performance of granular grippers, a class of soft robotic effectors that utilize granular jamming for object mani…
Automated tomographic assessment of structural defects of freeze-dried pharmaceuticals
Patric Müller, Achim Sack, Jens Dümler +6
The topology and surface characteristics of lyophilisates significantly impact the stability and reconstitutability of freeze-dried pharmaceuticals. Consequently, visual quality co…
Combined thermal and particle shape effects on powder spreading in additive manufacturing via discrete element simulations
Sudeshna Roy, Hongyi Xiao, Vasileios Angelidakis +1
The thermal and mechanical behaviors of powders are important for various additive manufacturing technologies. For powder bed fusion, capturing the temperature profile and the pack…
Surface tension and wetting at free surfaces in Smoothed Particle Hydrodynamics
Michael Blank, Prapanch Nair, Thorsten Pöschel
Surface tension and wetting are dominating physical effects in micro and nanoscale flows. We present an efficient and reliable model of surface tension and equilibrium contact angl…
SPIRAL: An Efficient Algorithm for the Integration of the Equation of Rotational Motion
Carlos Andrés del Valle, Vasileios Angelidakis, Sudeshna Roy +2
We introduce Spiral, a third-order integration algorithm for the rotational motion of extended bodies. It requires only one force calculation per time step, does not require quater…
Shear zones in granular mixtures of hard and soft particles with high and low friction
Aditya Pratap Singh, Vasileios Angelidakis, Thorsten Pöschel +1
Granular materials show inhomogeneous flows characterized by strain localization. When strain is localized in a sheared granular material, rigid regions of a nearly undeformed stat…
Structural fluctuations in thin cohesive particle layers in powder-based additive manufacturing
Sudeshna Roy, Hongyi Xiao, Vasileios Angelidakis +1
Producing dense and homogeneous powder layers with smooth free surface is challenging in additive manufacturing, as interparticle cohesion can strongly affect the powder packing st…
Approximate Expressions for the Capillary Force and the Surface Area of a Liquid Bridge between Identical Spheres
Meysam Bagheri, Sudeshna Roy, Thorsten Pöschel
We consider a liquid bridge between two identical spheres and provide approximate expressions for the capillary force and the exposed surface area of the liquid bridge as functions…
Structural features of jammed-granulate metamaterials
Holger Götz, Thorsten Pöschel, Olfa D'Angelo
Granular media near jamming exhibit fascinating properties, which can be harnessed to create jammed-granulate metamaterials: materials whose characteristics arise not only from the…
Granular binary mixtures improve energy dissipation efficiency of granular dampers
Nydia Roxana Varela-Rosales, Angel Santarossa, Michael Engel +1
Granular dampers are systems used to attenuate undesired vibrations produced by mechanical devices. They consist of cavities filled by granular particles. In this work, we consider…
Effect of Particle Size on the Suction Mechanism in Granular Grippers
Angel Santarossa, Olfa D'Angelo, Achim Sack +1
Granular grippers are highly adaptable end-effectors that exploit the reversible jamming transition of granular materials to hold and manipulate objects. Their holding force comes…
Soft particles reinforce robotic grippers: Robotic grippers based on granular jamming of soft particles
Holger Götz, Angel Santarossa, Achim Sack +2
Granular jamming has been identified as a fundamental mechanism for the operation of robotic grippers. In this work, we show, that soft particles like expanded polystyrene beads le…
Collective motion of granular matter subjected to swirling excitation
Song-Chuan Zhao, Thorsten Pöschel
A two-dimensional granular packing under horizontally circular shaking exhibits various collective motion modes depending on the strength of the oscillation and the global packing…
Spontaneous formation of density waves in granular matter under swirling excitation
Song-Chuan Zhao, Thorsten Pöschel
We study here the spontaneous clustering of a submonolayer of grains under horizontal circular shaking. The clustering of grains occurs when increasing the oscillation amplitude be…
Influence of capillary viscous flow on melting dynamics
Michael Blank, Prapanch Nair, Thorsten Pöschel
The rate of melting of a solid and the rate of deformation of the resulting melt due to capillary forces are comparable in additive manufacturing applications. This dynamic structu…
Dynamic capillary phenomena using Incompressible SPH
Prapanch Nair, Thorsten Poeschel
Grid based fluid simulation methods are not able to monolithically capture complex non-linear dynamics like the rupture of a dynamic liquid bridge between freely colliding solids,…
Mesoscopic Simulation of Electrohydrodynamic Patterns in Positive and Negative Nematic Liquid Crystals
Kuang-Wu Lee, Thorsten Pöschel
For the first time the electrohydrodynamic convection (EHC) of nematic liquid crystals is studied via fully nonlinear simulation. As a system of rich pattern-formation the EHC is m…
Stable algorithm for event detection in event-driven particle dynamics: logical states
Severin Strobl, Marcus N. Bannerman, Thorsten Poeschel
Following the recent development of a stable event-detection algorithm for hard-sphere systems, the implications of more complex interaction models are examined. The relative locat…
Numerical modeling of the wind flow over a transverse dune
Ascânio D. Araújo, Eric J. R. Parteli, Thorsten Poeschel +2
Transverse dunes, which form under unidirectional winds and have fixed profile in the direction perpendicular to the wind, occur on all celestial objects of our solar system where…
Energy Dissipation in Driven Granular Matter in the Absence of Gravity
Achim Sack, Michael Heckel, Jonathan E. Kollmer +2
We experimentally investigate the energy dissipation rate in sinusoidally driven boxes which are partly filled by granular material under conditions of weightlessness. We identify…
Event-driven Molecular Dynamics of Soft Particles
Patric Mueller, Thorsten Poeschel
The dynamics of dissipative soft-sphere gases obeys Newton's equation of motion which are commonly solved numerically by (force-based) Molecular Dynamics schemes. With the assumpti…
Stable algorithm for event detection in event-driven particle dynamics
Marcus N. Bannerman, Severin Strobl, Arno Formella +1
Event-Driven Particle Dynamics is a fast and precise method to simulate particulate systems of all scales. In this work it is demonstrated that, despite the high accuracy of the me…
A numerical study of the Navier-Stokes transport coefficients for 2D granular hydrodynamics
Lidia Almazán, José A. Carrillo, Clara Salueña +2
A numerical study is presented to analyze the thermal mechanisms of unsteady, supersonic granular flow, by means of hydrodynamic simulations of the Navier-Stokes granular equations…