Results 11 to 20 of about 174,051 (288)

Desempenho de três teorias de simulação do comportamento de um trator agrícola em tração Evaluation of three theories for predicting the performance of agricultural tractors

open access: yesEngenharia Agrícola, 2004
A simulação matemática é uma ferramenta importante na diminuição de custos de produção e viabilização de novos projetos de máquinas agrícolas. Este trabalho trata da comparação entre três teorias de simulação, as chamadas teorias de predição de tração ...
José F. Schlosser   +2 more
doaj   +1 more source

Nucleotide-dependent DNA gripping and an end-clamp mechanism regulate the bacteriophage T4 viral packaging motor. [PDF]

open access: yes, 2018
ATP-powered viral packaging motors are among the most powerful biomotors known. Motor subunits arranged in a ring repeatedly grip and translocate the DNA to package viral genomes into capsids.
Alam, Istiaq   +4 more
core   +3 more sources

Speed Control of Magnetic Drive-Trains with Pole-Slipping Amelioration

open access: yesEnergies, 2022
The paper introduces new techniques to reduce the potential for pole-slipping induced by control systems and presents a low-cost pole-slipping detection and recovery scheme for magnetic drive-trains (MDTs).
Xiaowen Liao, Chris Bingham, Tim Smith
doaj   +1 more source

History-dependent friction and slow slip from time-dependent microscopic junction laws studied in a statistical framework [PDF]

open access: yes, 2014
To study the microscopic origins of friction, we build a framework to describe the collective behaviour of a large number of individual micro-junctions forming a macroscopic frictional interface. Each micro-junction can switch in time between two states:
Malthe-Sørenssen, Anders   +4 more
core   +3 more sources

Design of a robust tracking controller for a nonholonomic mobile robot with side slipping based on Lyapunov Redesign and nonlinear H∞ methods

open access: yesSystems Science & Control Engineering, 2019
In this paper, robust control of nonholonomic mobile robots is considered which is more complex with respect to holonomic types, due to fewer degrees of freedom in their model.
M.H. Shafiei, F. Monfared
doaj   +1 more source

Coarsening rates for the dynamics of slipping droplets [PDF]

open access: yes, 2012
We derive reduced finite dimensional ODE models starting from one dimensional lubrication equations describing coarsening dynamics of droplets in nanometric polymer film interacting on a hydrophobically coated solid substrate in the presence of large ...
GEORGY KITAVTSEV, Kitavtsev
core   +1 more source

Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2019
Kinematic and dynamic features of flexible rotor rolling of an unlubricated uneven-stiffness gapped support are shown with the help of a theoretical model and full-scale tests.
A. N. Nikiforov   +2 more
doaj   +1 more source

Experimental Study of a Web Slipping on Rollers with Holes under Considering Air Temperature

open access: yesTribology Online, 2018
This article aims to experimentally study a slipping thin film on a roller of varying configurations. The investigated options include a smooth roller, a roller with a v-grooved surface, and a roller with holes under varying web tension and air ...
Puttha Jeenkour
doaj   +1 more source

Footwear soles friction on steel and tile surfaces: Experiments and modeling

open access: yesFriction
Understanding and modeling the friction between footwear soles and substrates is important to avoid slips. In this study, we measure the friction force for three different footwear soles sliding on steel and tile surfaces. We use a vulcanized rubber (RU),
Lasse Jakobsen   +3 more
doaj   +1 more source

Determining the Traction Characteristic of a Tractor in Operating Conditions

open access: yesСельскохозяйственные машины и технологии, 2018
One of the most important aspects in terms of increasing the efficiency of agricultural production is the improvement of the methods and tools of determining the main operating indicators of tractors as they influence the productivity, efficiency and ...
A. G. Arzhenovskiy   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy