Results 241 to 250 of about 4,652,142 (278)

Parametric electro‐mechanical dispersive behaviors of guided waves in the functionally graded piezoelectric annular plate

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2022
AbstractThis paper investigates the propagation characteristics of guided waves in functionally graded annular plates considering the electro‐mechanical coupling. In the orthogonal circular curvilinear coordinate system, the elastodynamic wave equation of guided waves is derived for the functional graded piezoelectric annular plate.
Chunlei Li, Dongliang Xiao, Sihao Han, Qiang Han   +3 more
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Rheometrical aspects of the viscoelastic dispersion of shear waves in gel-like mechanical networks

Journal of Non-Newtonian Fluid Mechanics, 1998
A modified form of the Gross-Marvin ladder model is used to simulate gelation processes in which \(\alpha\), the viscoelastic stress relaxation exponent in the gel equation, can be varied in the range ...
Williams, P. R., Williams, R. L.
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Dispersion Analysis of Wave Propagation in Cubic–Tetrahedral Assembly by Doublet Mechanics

Chinese Physics Letters, 2004
Based on elongation and shear microstrains between the doublet particles, we present the dynamic scaling equations of plane wave propagation in a cubic–tetrahedral assembly (lattice type H4) in accordance with the formalism of doublet mechanics (DM).
Jin Yan-Fang, Zhang Jue, Fang Jing, Mauro Ferrari   +3 more
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Mechanical normal dispersive 𝒩ℒℋ𝒮 shock waves of microfluidics in shallow model

Modern Physics Letters B
In this paper, we obtain normal dispersive [Formula: see text] shock waves for [Formula: see text] dam-break intensity by the nonlinear heat system. Then, we obtain super-fluid normal dispersive [Formula: see text] shock waves for [Formula: see text] dam-break microfluidics. Finally, we illustrate thermonormal [Formula: see text] pressure of [Formula:
Fatih Şevgin, Talat Körpinar
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Numerical Tools for Semi-Active Optimization of 2D Wave’s Dispersion Into Mechanical System

ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 2010
In the context of mid-frequency elastodynamical analysis of periodic structures, the Floquet-Bloch theorem has been recently applied. The latter allows the use of limited-size modeling of a representative cell to characterize waves dispersion properties of the assembled structure.
Manuel Collet, Morvan Ouisse, Mohammed Ichchou, Massimo Ruzzene   +3 more
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The Dispersion by Hydrogen-Like Atoms in Wave Mechanics

1928
In view of the recent experimental determination of the dispersion by atomic hydrogen it seems interesting to apply the theory of dispersion developed by Schrodinger to this case. In this paper we restrict ourselves to an approximation in which terms of the order of relativistic correction are neglected.
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Mechanisms of shock wave dispersion and attenuation in weakly ionized cold discharge plasmas

9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999
Both mechanism of shock wave filamentary discharge interaction, and shock wave propagation through transverse temperature non-uniform discharge region are shown to describe available experimental data for shock acceleration and diffusion. A criterion for stable filament formation is obtained for high current discharge giving filament parameters that ...
V. Soloviev, V. Krivtsov, A. Konchakov, N. Malmuth   +3 more
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Influence of mass density and mechanical properties on the surface acoustic wave velocity dispersion

Microelectronic Engineering, 2006
The surface acoustic wave technique is a non-contact, non-destructive opto-acoustic technique used to measure film thickness and material properties, such as elastic properties and density. Simulation of acoustic wave velocity dispersion revealed that the contribution density makes is larger in the first mode, whereas the modulus makes a larger ...
A. Sekiguchi, S.H. Brongersma, K. Maex
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T-wave changes in patients with Wellens syndrome are associated with increased myocardial mechanical and electrical dispersion

The International Journal of Cardiovascular Imaging, 2017
Some patients with unstable angina and critical stenosis of the left anterior descending coronary artery (LAD) present with Wellens syndrome (WS), i.e., inverted or biphasic T-waves in the anterior precordial leads. We assessed clinical, angiographic, electro- and echocardiographic characteristic of patients with WS.
Ivan, Stankovic, Srdjan, Kafedzic, Aleksandra, Janicijevic, Radosava, Cvjetan, Tijana, Vulovic, Milica, Jankovic, Ivan, Ilic, Biljana, Putnikovic, Aleksandar N, Neskovic   +8 more
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Shear Wave Dispersion Ultrasound Vibrometry Based on a Different Mechanical Model for Soft Tissue Characterization

Journal of Ultrasound in Medicine, 2012
Ultrasound vibrometry can measure the propagation velocity of shear waves in soft tissue noninvasively, and the shear moduli of tissue can be estimated inversely from the velocities at multiple frequencies. It is possible to choose the appropriate model for tissue characterization from mathematical methods and analysis of model behaviors.
Ke, Chen, Aiping, Yao, Eugene E, Zheng, Jiangli, Lin, Yi, Zheng   +4 more
openaire   +2 more sources