Zobrazeno 1 - 10
of 344
pro vyhledávání: '"Poeschel, Thorsten"'
Autor:
Roy, Sudeshna, Pöschel, Thorsten
The quality of the powder spread in additive manufacturing devices depends sensitively on the particles' shapes. Here, we study powder spreading for mixtures of spherical and irregularly shaped particles in Polyamide 12 powders. Using DEM simulations
Externí odkaz:
http://arxiv.org/abs/2408.09322
Autor:
Santarossa, Angel, Pöschel, Thorsten
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 manipulation. Through experimental analyses and X-ray imaging, we show tha
Externí odkaz:
http://arxiv.org/abs/2407.20948
Granular grippers can manipulate a wide variety of objects, but need to be pressed on the object to conform to it. If the object is placed on unstable ground, e.g., on sand or water, this step might cause the object to sink or move away from the grip
Externí odkaz:
http://arxiv.org/abs/2404.15577
We describe a method for modeling the geometry of porous materials. The approach enables the independent selection of crucial parameters, including porosity, pore size distribution, pore shape, and connectivity. Consequently, it can effectively model
Externí odkaz:
http://arxiv.org/abs/2404.12232
Autor:
Müller, Patric, Sack, Achim, Dümler, Jens, Heckel, Michael, Wenzel, Tim, Siegert, Teresa, Schuldt-Lieb, Sonja, Gieseler, Henning, Pöschel, Thorsten
The topology and surface characteristics of lyophilisates significantly impact the stability and reconstitutability of freeze-dried pharmaceuticals. Consequently, visual quality control of the product is imperative. However, this procedure is not onl
Externí odkaz:
http://arxiv.org/abs/2404.11867
When granular materials of shape-anisotropic grains are sheared in a split-bottom shear cell, a localized shear band is formed with a depression at its center. This effect is closely related to the alignment of the particles with aspect ratio (AR), w
Externí odkaz:
http://arxiv.org/abs/2404.11830
The thermal and mechanical behaviors of powders are important for various additive manufacturing technologies. For powder bed fusion, capturing the temperature profile and the packing structure of the powders prior to melting is challenging due to bo
Externí odkaz:
http://arxiv.org/abs/2402.15271
Autor:
Wolf, Dietrich E., Pöschel, Thorsten
Cohesive particles form agglomerates that are usually very porous. Their geometry, particularly their fractal dimension, depends on the agglomeration process (diffusion-limited or ballistic growth by adding single particles or cluster-cluster aggrega
Externí odkaz:
http://arxiv.org/abs/2312.03117
Publikováno v:
J. Fluid Mech. 987 (2024) A23
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 angles in Smoothed Particle Hydrodynamics for free-surface problems. We de
Externí odkaz:
http://arxiv.org/abs/2311.09640
Autor:
del Valle, Carlos Andrés, Angelidakis, Vasileios, Roy, Sudeshna, Muñoz, José Daniel, Pöschel, Thorsten
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 quaternion normalization at each time step, and can be formulated for both l
Externí odkaz:
http://arxiv.org/abs/2311.04106