Measurement Of Structural Intensity: Analytic And Experimental Evaluation Of Various Techniques For The Case Of Flexural Waves In One-Dimensional Structures

1994 ◽  
Vol 174 (5) ◽  
pp. 677-694 ◽  
Author(s):  
P.D. Bauman
Keyword(s):  
Experimental Evaluation ◽  
Flexural Waves ◽  
One Dimensional ◽  
Structural Intensity

scholarly journals The Equations for the Estimation of One Dimensional Structural Intensity in Semi Near-Field.

1998 ◽  
Vol 64 (625) ◽  
pp. 3280-3286
Author(s):  
Yukio IWAYA ◽  
Yoiti SUZUKI ◽  
Masato SAKATA ◽  
Toshio SONE
Keyword(s):  
Near Field ◽  
One Dimensional ◽  
Structural Intensity

Experimental evaluation of salinity geosynthetics capillary barriers

2021 ◽  
pp. 1-27
Author(s):  
A. Bouazza
Keyword(s):  
Experimental Evaluation ◽  
Preventive Measures ◽  
Saline Water ◽  
Capillary Rise ◽  
Water Entry ◽  
Upward Flow ◽  
Wetting Front ◽  
Capillary Barrier ◽  
One Dimensional ◽  
Capillary Barriers

This paper explores the transient upward flow of saline water in one-dimensional soil and soil-geosynthetics columns to evaluate preventive measures to mitigate salinity rise. Unsaturated soil concepts are utilised to elucidate the salinity movement through geotextile and geocomposite drain interfaces. The presence of a geotextile layer slowed down the capillary rise of the saline water. However, it did not prevent the breakthrough of the saline water due to the hydrophilicity of the geotextile and the suction at the geotextile base being close to the geotextile's water entry suction value.  In contrast, using a geocomposite drain mitigated the upward saline wetting front. It acted as a salinity capillary barrier due to the initial hydrophobicity of its geotextile component and the air gap present in the geonet core.

Generation of flexural waves on a quasi-one-dimensional KP soliton by a point-like dipole

Wave Motion ◽  
1992 ◽  
Vol 15 (3) ◽  
pp. 221-227 ◽  
Author(s):  
Alexey V. Fedorov ◽  
Boris A. Malomed
Keyword(s):  
Flexural Waves ◽  
One Dimensional

scholarly journals Energy spreading, equipartition and chaos in lattices with non-central forces

2021 ◽  
Author(s):  
Arnold Ngapasare ◽  
Georgios Theocharis ◽  
Olivier Richoux ◽  
Vassos Achilleos ◽  
Charalampos Skokos
Keyword(s):  
Energy Transport ◽  
Chaotic Behavior ◽  
Dynamical Behavior ◽  
Low Frequency ◽  
Initial Energy ◽  
Energy Localization ◽  
Flexural Waves ◽  
Linear Dispersion ◽  
One Dimensional ◽  
Linear Mode

Abstract We numerically study a one dimensional, nonlinear lattice model which in the linear limit is relevant to the study of bending (flexural) waves. In contrast with the classic one dimensional mass-spring system, the linear dispersion relation of the considered model has different characteristics in the low frequency limit. By introducing disorder in the masses of the lattice particles, we investigate how different nonlinearities (cubic, quadratic and their combination) lead to energy delocalization, equipartition and chaotic dynamics. We excite the lattice using single site initial momentum excitations corresponding to a strongly localized linear mode and increase the initial energy of excitation. Beyond a certain energy threshold, when the cubic nonlinearity is present, the system is found to reach energy equipartition and total delocalization. On the other hand, when only the quartic nonlinearity is activated, the system remains localized and away from equipartition at least for the energies and evolution times considered here. However, for large enough energies for all types of nonlinearities we observe chaos. This chaotic behavior is combined with energy delocalization when cubic nonlinearities are present, while the appearance of only quadratic nonlinearity leads to energy localization. Our results reveal a rich dynamical behavior and show differences with the relevant Fermi-Pasta-Ulam-Tsingou model. Our findings pave the way for the study of models relevant to bending (flexural) waves in the presence of nonlinearity and disorder, anticipating different energy transport behaviors.

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.

Electron-Mirror Microscopic Aspects of Ferroelectric Domains of BaTiO3 And Ca2Sr (C2H5CO2)6

1970 ◽  
Vol 28 ◽  
pp. 478-479
Author(s):  
Teruo Someya ◽  
Jinzo Kobayashi
Keyword(s):  
Surface Layer ◽  
Electric Fields ◽  
Quantitative Study ◽  
Recent Progress ◽  
Ferroelectric Domain ◽  
Resolving Power ◽  
Surface Pattern ◽  
Crystal Surfaces ◽  
One Dimensional ◽  
Ferroelectric Domains

Recent progress in the electron-mirror microscopy (EMM), e.g., an improvement of its resolving power together with an increase of the magnification makes it useful for investigating the ferroelectric domain physics. English has recently observed the domain texture in the surface layer of BaTiO3. The present authors ) have developed a theory by which one can evaluate small one-dimensional electric fields and/or topographic step heights in the crystal surfaces from their EMM pictures. This theory was applied to a quantitative study of the surface pattern of BaTiO3).

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