Highly Tunable One-Dimensional Hollow Cylindrical Granular Chains

2021 ◽  
Author(s):  
Wen Zhang ◽  
Jun Xu
Keyword(s):  
One Dimensional ◽  
Granular Chains

Entropic force on granular chains self-extracting from one-dimensional confinement

2014 ◽  
Vol 140 (2) ◽  
pp. 024912 ◽  
Author(s):  
Pei-Ren Jeng ◽  
KuanHua Chen ◽  
Gwo-jen Hwang ◽  
Ethan Y. Cho ◽  
Chenhsin Lien ◽  
...  
Keyword(s):  
Entropic Force ◽  
One Dimensional ◽  
Granular Chains

scholarly journals Propagation of short stress pulses in discrete strongly nonlinear tunable metamaterials

2014 ◽  
Vol 372 (2023) ◽  
pp. 20130186 ◽  
Author(s):  
Yichao Xu ◽  
Vitali F. Nesterenko
Keyword(s):  
Power Law ◽  
Elastic Moduli ◽  
Dynamic Behaviour ◽  
Spherical Particles ◽  
Short Pulses ◽  
One Dimensional ◽  
Linear Elastic ◽  
Strongly Nonlinear ◽  
Granular Chains ◽  
Different Levels

The propagation of short pulses with wavelength comparable to the size of a unit cell has been studied in a one-dimensional discrete metamaterial composed of steel discs alternating with toroidal nitrile O-rings under different levels of precompression using experiments, numerical simulations and theoretical analysis. This strongly nonlinear metamaterial is more tunable than granular chains composed of linear elastic spherical particles and has better potential for attenuation of dynamic loads. A double power-law relationship for compressed O-rings was found to describe adequately their quasi-static and dynamic behaviour with significantly different elastic moduli. It is demonstrated that the double power-law metamaterial investigated allows a dramatic increase in sound speed and acoustic impedance of three to four times using a moderate force.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

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