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.

KETAHANAN BALISTIK LEMBARAN BAJA PADA BERBAGAI SUDUT TEMBAK

ROTASI ◽  
2014 ◽  
Vol 16 (1) ◽  
pp. 34
Author(s):  
Rusnaldy Rusnaldy ◽  
Ismoyo Haryanto ◽  
Norman Iskandar ◽  
Binar Ade Anugra ◽  
Ahmad Zaedun
Keyword(s):  
Mild Steel ◽  
Steel Plate ◽  
Angle Of Attack ◽  
Oblique Impact ◽  
Experimental Results ◽  
Normal Impact ◽  
Impact Angles

Results of study on the performance of 0.4 mm mild steel plate when impacted by 4.5 mm diameter steel ogive-shaped projectile at 45o, 60o (oblique impact) and 90 o (normal impact) angles of attack are presented. The projectiles were fired at highest velocity using air riffle gun. The target-holding fixture was located at a distance of 2 m from the gun. Experimental results show that steel plate provides protection at 45o and 60o obliquity, but fails to provide protection at angle of attack of 90o (normal impact)

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.

On the Response of Elastic-Plastic Tubes Under Combined Bending and Tension

1992 ◽  
Vol 114 (1) ◽  
pp. 50-62 ◽  
Author(s):  
J. Y. Dyau ◽  
S. Kyriakides
Keyword(s):  
Numerical Simulation ◽  
Parametric Study ◽  
Axial Load ◽  
Test Specimen ◽  
Experimental Results ◽  
Two Dimensional ◽  
Plastic Range ◽  
Rigid Surface ◽  
Axial Tension ◽  
Thin Walled

This paper is concerned with the response of long, relatively thin-walled tubes bent into the plastic range in the presence of axial tension. The work is motivated by the design needs of pipelines installed and operated in deep offshore waters. The problem is studied through a combination of experiment and analysis. In the experiments, long metal tubes were bent over a smooth, circular, rigid surface (mandrel). Bending of the tubes was achieved by shear and axial end loads. The experimental arrangement is such that a significant section of the test specimen is loaded and deformed in an axially uniform fashion. The ovalization induced in the specimen was measured as a function of the axial load in the tube for two mandrel radii. A two-dimensional numerical simulation of the problem has been developed and validated against the experimental results. This analysis was used to conduct a parametric study of the effect of tension on the ovalization induced in a long tube during bending.

Some Experimental Results From Compliant Air Lubricated Thrust Bearings

1974 ◽  
Vol 96 (4) ◽  
pp. 547-552 ◽  
Author(s):  
I. R. G. Lowe
Keyword(s):  
Practical Interest ◽  
Load Flow ◽  
Experimental Results ◽  
Rigid Surface ◽  
Thrust Bearings ◽  
Compliant Surface ◽  
Compliant Layer

Experimental results are presented from a series of tests on axisymmetric, inherently compensated, air thrust bearings which had one compliant surface. The results demonstrate that in general compliant surface bearings have greater load capacities than equivalent rigid surface bearings. The dependence of load, flow, and stability on the nature of the compliant layer is also shown. Comparisons with the load capacities predicted theoretically by Pirvics and Castelli show agreement in the range of most practical interest, that is when the load advantage vis-a`-vis rigid bearings is greatest.

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
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