Results 231 to 240 of about 4,652,142 (278)
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International Journal of Solids and Structures
It is well known from the literature that the phase velocity of waves is directly correlated with the stiffness of the material; however, experimental practice shows that this velocity changes significantly with varying frequencies, despite the fact that the elastic modulus of the material is, by definition, a material constant.
Aguinaldo Fraddosio +2 more
exaly +2 more sources
It is well known from the literature that the phase velocity of waves is directly correlated with the stiffness of the material; however, experimental practice shows that this velocity changes significantly with varying frequencies, despite the fact that the elastic modulus of the material is, by definition, a material constant.
Aguinaldo Fraddosio +2 more
exaly +2 more sources
Dispersal Patterns, Dispersal Mechanisms, and Invasion Wave Speeds for Invasive Thistles
The American Naturalist, 2007Understanding and predicting population spread rates is an important problem in basic and applied ecology. In this article, we link estimates of invasion wave speeds to species traits and environmental conditions. We present detailed field studies of wind dispersal and compare nonparametric (i.e., data-based) and mechanistic (fluid dynamics model-based)
Olav, Skarpaas, Katriona, Shea
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A linear focusing mechanism for dispersive and non-dispersive wave problems
Journal of Computational Physics, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yogesh G. Bhumkar +2 more
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Shear wave dispersion and mechanical relaxation spectra
Journal of Physics D: Applied Physics, 1999It is shown that a mechanical stress relaxation spectrum may be obtained directly from measurements of the dispersion of shear waves in viscoelastic media. The effectiveness of this spectrum, in terms of its sensitivity and accuracy in parametrizing distributions of stress relaxation in the frequency domain, is demonstrated with reference to several ...
P R Williams, S Ravji
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Shear wave dispersion in mechanically self-similar gel networks
Journal of Physics D: Applied Physics, 1998A study of viscoelastic shear wave dispersion in a simulated gelation process involving mechanically self-similar nodal networks is reported. The network formed at the gel point (the infinite network cluster, or `critical gel') shares a common structural feature of smaller network clusters and the onset of a recognizably `gel-like' feature is shown to ...
P R Williams, R L Williams
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Nonlinear-dispersive mechanism of the freak wave formation in shallow water
Physica D: Nonlinear Phenomena, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pelinovsky, Efim +2 more
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Characterization of Wave Dispersion in Viscoelastic Cellular Assemblies by Doublet Mechanics
Chinese Physics Letters, 2009Using the Voigt model, we analyze wave propagation in viscoelastic granular media with a monatomic lattice, planar simple cubic package and cubical—tetrahedral assembly within the context of doublet mechanics. Microstrains of elongation between the doublet particles are considered in the models.
Jin Yan-Fang +3 more
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The inversion problem in wave mechanics and dispersion relations
Nuclear Physics, 1958Abstract The analytical properties of the eigensolutions of a wave equation as function of the energy, considered as a complex variable, serve to give a new derivation of the so called Gel'fand and Levitan integral equation which determines the interaction when the spectral function is known. This method allows an immediate extension to the Dirac and
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The Journal of the Acoustical Society of America, 2012
This paper first reviews a method of simulating the propagation characteristics of guided waves in multilayered coaxial cylindrical elastic solid media. Secondly, this method is used to investigate the properties of the guided waves for the ultrasonic long-range non-destructive evaluation techniques for rockbolts.
Hanyin, Cui +3 more
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This paper first reviews a method of simulating the propagation characteristics of guided waves in multilayered coaxial cylindrical elastic solid media. Secondly, this method is used to investigate the properties of the guided waves for the ultrasonic long-range non-destructive evaluation techniques for rockbolts.
Hanyin, Cui +3 more
openaire +2 more sources