Results 81 to 90 of about 281,766 (191)

Analytical comparison of effects of solid-friction and viscous structural damping on panel flutter [PDF]

open access: yes
A Galerkin modal analysis is presented that accounts for the effects of both solid friction and viscous structural damping on panel flutter, based on unsteady aerodynamic forces from supersonic potential flow.
Cunningham, H. J.
core   +1 more source

Isostaticity at Frictional Jamming

open access: yes, 2013
Amorphous packings of frictionless, spherical particles are isostatic at jamming onset, with the number of constraints (contacts) equal to the number of degrees of freedom.
O'Hern, Corey S.   +2 more
core   +1 more source

O uso das luvas de proteção no corte manual da cana-de-açúcar

open access: yesRevista Brasileira de Saúde Ocupacional
Uma negociação tripartite entre a Fundacentro, o Sindicato dos Empregados Rurais de Araraquara e a Usina Santa Cruz permitiu a realização do estudo sobre o uso dos equipamentos de proteção individual (EPI) e das ferramentas de trabalho durante a execução
Maria Cristina Gonzaga   +2 more
doaj   +1 more source

Machine tests slow-speed sliding friction in high vacuum [PDF]

open access: yes, 1967
Testing machine that operates without any lubrication of the machine elements within the vacuum chamber measures static friction and sliding friction at very low speeds.
Skyrus, J., Wilkinson, C.
core   +1 more source

Static frictional resistance with the Slide low-friction elastomeric ligature system

open access: yesAustralasian Orthodontic Journal, 2009
Abstract Aim This ex-vivo study compared the static frictional resistance of a low-friction ligation system against a conventional elastomeric module, and studied the effect of storage in a simulated oral environment on the static frictional resistance of both ligation systems.
Jones Steven P., Bihi Saida Ben
openaire   +3 more sources

Forced response of shrouded blades with a coupled static/dynamic approach [PDF]

open access: yes, 2011
A coupled static-dynamic method is proposed and applied to bladed disks with shrouds, in order to calculate the nonlinear forced response in presence of friction damping in the frequency domain.
Firrone, Christian Maria   +2 more
core  

Calculation of Pile Side Friction by Multiparameter Statistical Analysis

open access: yesAdvances in Civil Engineering, 2019
In this paper, a static load test and a multiparameter statistical analysis method are used to study the value of pile side friction in different soil layers in a loess region.
Zhijun Zhou   +4 more
doaj   +1 more source

Establishment and Parameter Calibration of a DEM-Based Contact Model for Leymus chinensis Seed–Straw Mixtures

open access: yesApplied Sciences
The study of Leymus chinensis seed cleaning has been hindered by the lack of accurate discrete-element contact parameters for seed–straw interactions, thereby limiting, to some extent, the optimization of cleaning equipment.
Qihao Wan   +6 more
doaj   +1 more source

Friction force microscopy of tribochemistry and interfacial ageing for the SiOx/Si/Au system

open access: yesBeilstein Journal of Nanotechnology, 2018
Friction force microscopy was performed with oxidized or gold-coated silicon tips sliding on Au(111) or oxidized Si(100) surfaces in ultrahigh vacuum.
Christiane Petzold   +2 more
doaj   +1 more source

The experimental and finite element study of friction in aircraft riveted joints

open access: yesАвіаційно-космічна техніка та технологія
This article presents the results of a study on the factors determining the effect of film-forming anticorrosive compounds on the fatigue of riveted joints. Anti-corrosion compounds recommended for protecting the structure of transport category aircraft,
Ievgen Gavrylov   +4 more
doaj   +1 more source

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