scholarly journals The Neuronal Encoding of Oral Fat by the Coefficient of Sliding Friction in the Cerebral Cortex and Amygdala

2018 ◽  
Vol 28 (11) ◽  
pp. 4080-4089 ◽  
Author(s):  
Edmund T Rolls ◽  
Tom Mills ◽  
Abigail B Norton ◽  
Aris Lazidis ◽  
Ian T Norton
Keyword(s):  
Cerebral Cortex ◽  
Sliding Friction ◽  
Coefficient Of Sliding Friction ◽  
Neuronal Encoding

Finite Element Analysis of Circular Wedge Connections

2000 ◽  
Author(s):  
Christoph Grossmann ◽  
Oliver Tegel
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytic Function ◽  
Sliding Friction ◽  
Power Transmission ◽  
Structural Performance ◽  
Element Analysis ◽  
Coefficient Of Sliding Friction ◽  
The Finite Element Analysis

Abstract In this paper, the finite element analysis of circular wedge connections is described, and conclusions for the performance of the connection are derived. In the foreground of the examinations are stresses and deformations while tightening of the connection. Starting with the general structural performance, the influences on power transmission like slope, number of wedges, coefficient of sliding friction and outer hub diameter are discussed. An analytic function to describe the gap pressure within the tightened joint is introduced and rates to explain the problem of centering of circular wedge connections are shown. Finally two concepts for dimensioning are presented and recommendations for application of this connection are given.

scholarly journals MECHANICAL CHARACTERISTICS OF THE RUBBED MAIZE STRAW DURING SCREW CONVEYING

2021 ◽  
pp. 109-118
Author(s):  
Wulantuya ◽  
Wuyuntana ◽  
Hongbo Wang ◽  
Wenbin Guo ◽  
Chunguang Wang ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Internal Friction ◽  
Moisture Content ◽  
Mechanical Characteristics ◽  
Sliding Friction ◽  
Angle Of Repose ◽  
Flow Function ◽  
Coefficient Of Sliding Friction ◽  
Maize Straw ◽  
Internal Friction Coefficient

In order to reduce the power consumption of screw conveyor and to improve the productivity, this study investigated such mechanical characteristics of rubbed maize straw as coefficient of sliding friction, angle of repose, internal friction coefficient, cohesion, flow function value and compressible coefficient with respect to its moisture content and density. An experiment was designed and consists of a sliding friction characteristic test-bed, a direct shear apparatus, a self-made device with adjustable density and compression. The results showed that: the coefficient of sliding friction increases with the increase of moisture content and density; the angle of repose and internal friction coefficient each increases with increasing moisture content respectively; there is no significant effect between the moisture content and the cohesion of rubbed maize straw; the flow function value goes up with the increase of the moisture content; also the increase of the moisture content leads to the increased bulk density due to the reduced materials gap and the increased compression coefficient, which makes it hard to compress. The equation of pressure and density was found, and it is suitable for the analysis of compression characteristic of rubbed maize straw. The research results lay a theoretical foundation and a basis for the further study on mechanical properties of maize straw.

scholarly journals Numerical Study of Particle Morphology Effect on the Angle of Repose for Coarse Assemblies Using DEM

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Jing Chen ◽  
Rui Gao ◽  
Yangzepeng Liu
Keyword(s):  
Particle Shape ◽  
Laboratory Tests ◽  
Sliding Friction ◽  
Numerical Study ◽  
Dominant Role ◽  
Particle Morphology ◽  
Angle Of Repose ◽  
Shape Effect ◽  
Shape Factors ◽  
Coefficient Of Sliding Friction

The morphologies of coarse particles are usually irregular and play a dominant role in the mechanical behaviors of the particle assemblies. This paper quantitatively studies the effect of particle shape on the angle of repose, which is an important macroscopic parameter for ballast materials, via laboratory tests and numerical simulations by means of the discrete element method (DEM). Forty ballast particle templates and four simply created clump templates are reconstructed using an image-based method and quantified with two shape factors, sphericity and convexity. A series of simulations are conducted with the coefficient of sliding friction between particles changing from 0.2 to 0.6 at an interval of 0.1 to study its influence on various shapes of particles, and an appropriate value of sliding friction coefficient is chosen for the comparison of particle shape effect. The results show that increasing sphericity and convexity can significantly decrease the angle of repose, and the real ballast model gives a more realistic angle of repose behaviors as that of laboratory tests compared to simply created models. By analyzing the characteristics of particle motions and contacts from a microscopic perspective, the mechanism of particle shape attributed to the formation of granular aggregation is also discussed and revealed in this research.

MICROZINC ALLOY 190

Alloy Digest ◽  
1976 ◽  
Vol 25 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Copper Alloy ◽  
Atmospheric Corrosion ◽  
Sliding Friction ◽  
Heat Treating ◽  
Coefficient Of Sliding Friction ◽  
Chemical Division ◽  
Processing Differences

Abstract MICROZINC Alloy 190 is a zinc-copper alloy with good atmospheric corrosion resistance and a low coefficient of sliding friction to eliminate galling in service. It has maximum strength commensurate with good ductility and drawability. Processing differences give two commercial products or classes designated 191 and 192. This alloy does not stain other materials. Its many uses include terrazzo strips, eyelets and weatherstrips. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, joining, and surface treatment. Filing Code: Zn-29. Producer or source: Ball Corporation, Metal and Chemical Division.

Oblique impact of ice hockey and plastic pucks with a rigid surface

2022 ◽  
Author(s):  
Rod Cross
Keyword(s):  
Sliding Friction ◽  
Oblique Impact ◽  
Ice Hockey ◽  
Experimental Results ◽  
Angle Of Incidence ◽  
Rigid Surface ◽  
Coefficient Of Sliding Friction ◽  
Student Laboratory ◽  
Plastic Disk

Abstract The collision of a disk with a rigid surface is analysed in this paper assuming that the disk slides throughout the collision at glancing angles or grips the surface at other angles of incidence. Experimental results are presented for an ice hockey puck and a plastic disk, showing that there is no rolling involved, as assumed in previous studies. Measurements are presented of the outgoing speed, angle and spin as a function of the angle of incidence, and the results are described in terms of the normal and tangential coefficients of restitution plus the coefficient of sliding friction. The experiment would be suitable for use in a student laboratory.

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