Rheology behavior and optimal damping effect of granular particles in a non-obstructive particle damper

2016 ◽  
Vol 364 ◽  
pp. 30-43 ◽  
Author(s):  
Kai Zhang ◽  
Tianning Chen ◽  
Xiaopeng Wang ◽  
Jianglong Fang
Keyword(s):  
Damping Effect ◽  
Optimal Damping ◽  
Granular Particles

scholarly journals A Study on Design and Analysis of Hybrid Vibration Damper with Energy Harvesting and Optimal Damping Effect

2014 ◽  
Vol 95 (2) ◽  
pp. 97-102 ◽  
Author(s):  
T. V. Hanumantha Rao ◽  
M. S. S. Srinivasa Rao ◽  
B. V. Apparao ◽  
K. Satyanarayana
Keyword(s):  
Energy Harvesting ◽  
Vibration Damper ◽  
Damping Effect ◽  
Optimal Damping

Multiple stability and maximum stability in a model population

1975 ◽  
Vol 53 (12) ◽  
pp. 1844-1854 ◽  
Author(s):  
Donald J. McQueen
Keyword(s):  
Numerical Stability ◽  
Equilibrium Points ◽  
Demographic Model ◽  
Natural Mortality ◽  
Demographic Structure ◽  
Stability Range ◽  
Damping Effect ◽  
Optimal Damping ◽  
Maximum Stability ◽  
Multiple Stability

Using a modular demographic model this work attempts to mechanistically explain how multistability levels might occur, to explain how a population might move from one level to another, and to investigate the combination of forces which leads to maximum stability within a local stability range. The work showed that unique stability levels for single populations are created by unique combinations of rates such as birth, natural mortality, emigration, immigration, and interference, and that because these rates depend upon factors such as climate and resource availability, stability levels constantly change and arc constantly chased by the population. The simulations also showed that, as rates changed, stable and unstable equilibrium points approached and met one another causing the population to shift from one stability level to another. The work also suggested that there was an inverse relationship between the numerical stability of the population and the number of feedback forces influencing its demographic structure. Maximum stability was achieved by excluding all but one feedback force, and among the simulations of this type that were performed, natural mortality acting alone produced the optimal damping effect.

scholarly journals Damping Effect Coupled with the Internal Translator Mass of Linear Generator-Based Wave Energy Converters

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4424
Author(s):  
Yue Hong ◽  
Mikael Eriksson ◽  
Cecilia Boström ◽  
Jianfei Pan ◽  
Yun Liu ◽  
...  
Keyword(s):  
Wave Energy ◽  
Mechanical Design ◽  
Damping Force ◽  
The West ◽  
Linear Generator ◽  
Damping Effect ◽  
Wave Energy Converters ◽  
Optimal Damping ◽  
Vital Factor ◽  
Energy Converters

The damping effect, induced inside the linear generator, is a vital factor to improve the conversion efficiency of wave energy converters (WEC). As part of the mechanical design, the translator mass affects the damping force and eventually affects the performance of the WEC by converting wave energy into electricity. This paper proposes research on the damping effect coupled with translator mass regarding the generated power from WEC. Complicated influences from ocean wave climates along the west coast of Sweden are also included. This paper first compares three cases of translator mass with varied damping effects. A further investigation on coupling effects is performed using annual energy absorption under a series of sea states. Results suggest that a heavier translator may promote the damping effect and therefore improve the power production. However, the hinder effect is also observed and analyzed in specific cases. In this paper, the variations in the optimal damping coefficient are observed and discussed along with different cases.

Damping Effect of Virtual Synchronous Machines Provided by a Dynamical Virtual Impedance

2020 ◽  
pp. 1-1
Author(s):  
Linbin Huang ◽  
Huanhai Xin ◽  
Hui Yuan ◽  
Guanzhong Wang ◽  
Ping Ju
Keyword(s):  
Synchronous Machines ◽  
Damping Effect ◽  
Virtual Impedance

Optimal damping of forced oscillations in discrete-time systems

1997 ◽  
Vol 42 (6) ◽  
pp. 786-802 ◽  
Author(s):  
A. Lindquist ◽  
V.A. Yakubovich
Keyword(s):  
Discrete Time ◽  
Forced Oscillations ◽  
Discrete Time Systems ◽  
Optimal Damping ◽  
Time Systems

Segregation of granular particles by mass, radius, and density in a horizontal rotating drum

AIChE Journal ◽  
2013 ◽  
Vol 60 (1) ◽  
pp. 50-59 ◽  
Author(s):  
M. M. H. D. Arntz ◽  
H. H. Beeftink ◽  
W. K. den Otter ◽  
W. J. Briels ◽  
R. M. Boom
Keyword(s):  
Rotating Drum ◽  
Granular Particles
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