Results 11 to 20 of about 3,517,042 (247)

In-cylinder fuel and lubricant effects on gasoline engine friction [PDF]

open access: yes, 2007
The purpose of the research reported in this thesis was to investigate the viability and quantify the potential gains of improving fuel economy of the gasoline engine through strategic application of additives.
Smith, Oiver Mark Edward
core   +6 more sources

Limit dynamic internal friction angle (λ = 0).

open access: yes, 2022
Limit dynamic internal friction angle (λ = 0).
Fu Yi (11014577)   +4 more
core   +1 more source

Upper Bound Finite Element Limit Analysis of Pullout Characteristics of Normal-Stressed Circular Anchor Plate

open access: yesGeofluids, 2022
In this paper, the pullout factor and failure mode of circular anchor plate at an inclined angle with the horizontal ground under the normal stress are studied with the method of the upper bound finite element limit analysis. The effects of soil cohesion,
Yibo Luo   +4 more
doaj   +1 more source

Mutual influence of cross hatch angle and superficial roughness of honed surfaces on friction in ring-pack tribo-system [PDF]

open access: yes, 2013
The cylinder bore surface texture, widely produced by the honing technique, is an essential factor for a good engine performance (friction, oil consumption, running-in, wear etc.).
EL MANSORI, Mohamed   +3 more
core   +1 more source

Failure Mechanism and Slope Factors for a Footing Resting on Slopes

open access: yesMagazine of Civil Engineering, 2021
The behaviour of a footing affected significantly with the presence of the slope. The effect of slope on the bearing capacity, slope factor, and failure mechanism has been explored using limit analysis.
SHUKLA RAJESH PRASAD
doaj   +1 more source

Effects of a straight oil on friction at the tool-workmaterial interface in machining [PDF]

open access: yes, 2010
Authors would like to express their gratitude to the TOTAL Company for the furniture of the lubricant.The quantification of friction coefficient along the tool-workmaterial interface in machining remains an issue in tribology. This paper aims identifying
RECH, Joël   +7 more
core   +1 more source

Three-Dimensional Combined Finite-Discrete Element Modeling of Shear Fracture Process in Direct Shearing of Rough Concrete–Rock Joints

open access: yesApplied Sciences, 2020
A three-dimensional combined finite-discrete element element method (FDEM), parallelized by a general-purpose graphic-processing-unit (GPGPU), was applied to identify the fracture process of rough concrete–rock joints under direct shearing.
Gyeongjo Min   +7 more
doaj   +1 more source

Effect of grain size distribution on the shear properties of sand

open access: yesFrontiers in Materials, 2023
In this study, we investigated the effect of particle size distribution on the shear properties of sand. Direct shear tests were conducted using four types of sand samples with different particle size distributions obtained from standard sand produced by
Hong Guo   +14 more
doaj   +1 more source

Internal friction investigation of phase transformation in nearly stoichiometric LaMnO3+δ [PDF]

open access: yes, 2005
Rhombohedral LaMnO3+δ powders, prepared by two different soft chemistry routes (co-precipitation and hydrothermal synthesis), are sintered at 1400 °C for 2 h in air. Measurements of internal friction Q−1(T) and shear modulus G(T), at low frequencies from
Calmet, Christophe   +7 more
core   +1 more source

Determination of soil shear properties on a soil to concrete interface using a direct shear box apparatus

open access: yesInternational Journal of Geo-Engineering, 2017
Direct shear experiments were carried out both to investigate the interaction between a predominantly cohesion less soil and in-situ concrete and the validation of the tangent of two-third of the angle of internal friction angle normally assumed in ...
Abidemi Olujide Ilori   +2 more
doaj   +1 more source

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