Results 51 to 60 of about 81,279 (338)

Simulation Parameter Calibration and Experimental Study of a Discrete Element Model of Cotton Precision Seed Metering

Agriculture, 2022
To improve the accuracy of the parameters used in the discrete element simulation test, this study calibrated the simulation parameters of cotton seeds by combining a physical test and simulation test.
Shenghe Bai, Yanwei Yuan, Kang Niu, Liming Zhou, Bo Zhao, Liguo Wei, Lijing Liu, Shi Xiong, Zenglu Shi, Yihua Ma, Yuankun Zheng, Gaoyong Xing   +11 more
doaj   +1 more source

Electrically induced tunable cohesion in granular systems

, 2010
Experimental observations of confined granular materials in the presence of an electric field that induces cohesive forces are reported. The angle of repose is found to increase with the cohesive force. A theoretical model for the stability of a granular
Alain Faisant, Bi W, Courrech du Pont S, Courrech du Pont S, Jean-François Métayer, Lide D R, Lumay G, Patrick Richard, Renaud Delannay, Richard P, Taberlet N   +10 more
core   +3 more sources

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano, Giacomo Boffa, Maria Petracca, Marta Ponzano, Nicole Graziano, Claire Wigley, Claire Riley, Jonathan Howard, Pietro Bontempi, Sylvia Klineova, Fred Lublin, Matilde Inglese   +11 more
wiley   +1 more source

Calibration and Verification of Discrete Element Parameters of Surface Soil in Camellia Oleifera Forest

Agronomy
To analyze the interaction between the surface soil and the soil-contacting component (65 Mn) in the camellia oleifera forest planting area in Changsha City, Hunan, China, in this study, we conducted discrete element calibration using physical and ...
Xueting Ma, Yong You, Deqiu Yang, Decheng Wang, Yunting Hui, Daoyi Li, Haihua Wu   +6 more
doaj   +1 more source

On the Shape of the Tail of a Two Dimensional Sand Pile

, 1996
We study the shape of the tail of a heap of granular material. A simple theoretical argument shows that the tail adds a logarithmic correction to the slope given by the angle of repose. This expression is in good agreement with experiments.
A. Károlyi, D. Désirable, G. H. Ristow, G. W. Baxter, H. J. Herrmann, H. J. Herrmann, H. M. Jaeger, I. Goldhirsch, J. J. Alonso   +8 more
core   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

Determination of melon seed physical parameters and calibration of discrete element simulation parameters.

PLoS ONE
To improve the accuracy of the Hami melon discrete element model, the parameters of the Hami melon seed discrete element model were calibrated by combining practical experiments and simulation tests. The basic physical parameters of Hami melon seeds were
Yuan Wan, Bowen Zhang, Qinghui Lai, Yan Gong, Yu Qingxu, Xiao Chen   +5 more
doaj   +1 more source

Influence of Crushed Rock Properties on the Productivity of a Hydraulic Excavator

Applied Sciences, 2021
Among many factors that influence an excavator’s performance and productivity, the volume of the bucket load and duration of the excavator working cycle are crucial.
Trpimir Kujundžić, Mario Klanfar, Tomislav Korman, Zlatko Briševac   +3 more
doaj   +1 more source

Temporally heterogeneous dynamics in granular flows [PDF]

, 2005
Granular simulations are used to probe the particle scale dynamics at short, intermediate, and long time scales for gravity driven, dense granular flows down an inclined plane.
Silbert, L. E.
core   +3 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source