Central collision of two rolling balls: theory and examples

2017 ◽  
Vol 10 ◽  
pp. 33-79 ◽  
Author(s):  
Katica R. (Stevanovic) Hedrih
Keyword(s):  
Central Collision ◽  
Rolling Balls

Continuous Hydrothermal Synthesis of Fe2O3Nanoparticles Using a Central Collision-Type Micromixer for Rapid and Homogeneous Nucleation at 673 K and 30 MPa

2010 ◽  
Vol 49 (18) ◽  
pp. 8841-8846 ◽  
Author(s):  
Kiwamu Sue ◽  
Toshiyuki Sato ◽  
Shin-ichiro Kawasaki ◽  
Yoshihiro Takebayashi ◽  
Satoshi Yoda ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Homogeneous Nucleation ◽  
Central Collision ◽  
Collision Type

scholarly journals Rolling balls and octonions

2007 ◽  
Vol 258 (1) ◽  
pp. 13-22 ◽  
Author(s):  
A. A. Agrachev
Keyword(s):  
Rolling Balls

scholarly journals Rolling balls over spheres in $ \newcommand{\m}{\mathfrak m} {\mathbb{R}^n}$

Nonlinearity ◽  
2018 ◽  
Vol 31 (9) ◽  
pp. 4006-4030 ◽  
Author(s):  
Božidar Jovanović
Keyword(s):  
Rolling Balls

Swing Reduction of Ropeway Carriers by Means of Two-Ball Rolling Type Damping Equipment: 2nd Report — Way to Implement Desired Damping for Two-Ball System

2007 ◽  
Author(s):  
H. Sato ◽  
M. Chishima
Keyword(s):  
Friction Coefficient ◽  
Frequency Response ◽  
Dynamic Model ◽  
Time Domain ◽  
Damping Coefficient ◽  
Ball Rolling ◽  
Safety And Reliability ◽  
Transport Safety ◽  
Time Domain Response ◽  
Rolling Balls

To enhance transport safety and reliability of ropeway systems, it is essential to reduce the swing of the carriers that results from wind, etc. In the previous report [1], we provided a practical damping equipment using two rolling balls (hereinafter described as “two-ball rolling type damping equipment”) to reduce the swing of ropeway carriers. A linearized dynamic model is proposed. Then, on the basis of relevant parameters, the frequency response and time domain response of the system is studied and discussed. In this report, we will study relationship between theoretical best damping coefficient ratio and friction coefficient of two-ball system. Then we will provide the way to implement the desired damping for the two-ball system. We will then provide the detail on how to estimate the inherent damping within the two-ball system. In addition, we will show and discuss two balls behavior when this equipment works experimentally.

Prompt emission of particles in TDHF central collision

1983 ◽  
Vol 121 (5) ◽  
pp. 297-302 ◽  
Author(s):  
S. Drożdż ◽  
J. Okołowicz ◽  
M. Ploszajczak
Keyword(s):  
Central Collision ◽  
Prompt Emission

Using fractal geometry to make rapid field measurements of riverbed topography at ecologically useful spatial scales

2002 ◽  
Vol 53 (6) ◽  
pp. 999 ◽  
Author(s):  
B. J. Robson ◽  
E. T. Chester ◽  
L. A. Barmuta
Keyword(s):  
Fractal Dimension ◽  
Fractal Geometry ◽  
Random Sampling ◽  
Spatial Scales ◽  
Field Measurements ◽  
Habitat Types ◽  
River Bed ◽  
Bed Roughness ◽  
Rolling Balls

A method is described for making rapid in situ field measurements of riverbed topography over spatial scales of ≅1–10 m. This method uses rolling balls to make quick, accurate measurements of river-bed roughness at several spatial scales. Random sampling and replication generate multiple estimates of the fractal dimension (d) that can be used to test for significant differences in the complexity of riverbed architecture between habitat types and spatial scales.

Passive Balancing of Rotor Systems Using Pendulum Balancers

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
Roland Horvath ◽  
George T. Flowers ◽  
Jerry Fausz
Keyword(s):  
Simulation Model ◽  
Dynamic Characteristics ◽  
Recent Literature ◽  
Experimental Studies ◽  
Simulation Studies ◽  
Additional Insight ◽  
Rotor Systems ◽  
Rolling Balls ◽  
Insight Into

Passive balancing techniques have received a great deal of attention in recent literature, with much of this work focused on ball balancer systems. However, for certain applications, balancing systems that use pendulums rather than rolling balls may offer distinctly improved balancing precision. This investigation seeks to provide additional insight into the performance and expected behavior of such systems. A simulation model is developed for a pendulum balancer system with isotropic supports and analyzed in detail. The influence of shaft location and friction on balancing effectiveness is considered and evaluated. In this regard, the dynamic characteristics of a pendulum balancer system are analyzed and compared to a similar ball balancer system. The conclusions and observations from the analysis and simulation studies are demonstrated and tested in a series of experimental studies.

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