scholarly journals A macro‐element strategy based upon spectral finite elements and mortar elements for transient wave propagation modeling. Application to ultrasonic testing of laminate composite materials

2019 ◽  
Vol 119 (10) ◽  
pp. 964-990 ◽  
Author(s):  
Alexandre Imperiale ◽  
Edouard Demaldent
Keyword(s):  
Wave Propagation ◽  
Composite Materials ◽  
Ultrasonic Testing ◽  
Laminate Composite ◽  
Transient Wave ◽  
Propagation Modeling ◽  
Transient Wave Propagation ◽  
Macro Element ◽  
Spectral Finite Elements ◽  
Wave Propagation Modeling

Brief review on PE method application to propagation channel modeling in sea environment

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Irina Sirkova
Keyword(s):  
Wave Propagation ◽  
Fourier Transform ◽  
Parabolic Equation ◽  
Initial Conditions ◽  
Channel Modeling ◽  
Radio Propagation ◽  
Propagation Channel ◽  
Tropospheric Propagation ◽  
Propagation Modeling ◽  
Wave Propagation Modeling

AbstractThis work provides an introduction to one of the most widely used advanced methods for wave propagation modeling, the Parabolic Equation (PE) method, with emphasis on its application to tropospheric radio propagation in coastal and maritime regions. The assumptions of the derivation, the advantages and drawbacks of the PE, the numerical methods for solving it, and the boundary and initial conditions for its application to the tropospheric propagation problem are briefly discussed. More details are given for the split-step Fourier-transform (SSF) solution of the PE. The environmental input to the PE, the methods for tropospheric refractivity profiling, their accuracy, limitations, and the average refractivity modeling are also summarized. The reported results illustrate the application of finite element (FE) based and SSF-based solutions of the PE for one of the most difficult to treat propagation mechanisms, yet of great significance for the performance of radars and communications links working in coastal and maritime zones — the tropospheric ducting mechanism. Recent achievements, some unresolved issues and ongoing developments related to further improvements of the PE method application to the propagation channel modeling in sea environment are highlighted.

Transient wave propagation in Cosserat-type shells

2019 ◽  
Vol 163 ◽  
pp. 145-149
Author(s):  
Yury A. Rossikhin ◽  
Marina V. Shitikova
Keyword(s):  
Wave Propagation ◽  
Transient Wave ◽  
Transient Wave Propagation

scholarly journals The detonation wave propagation modeling in a cylindrical channel

2018 ◽  
pp. 1-14
Author(s):  
Ekaterina Alekseevna Zabrodina ◽  
Yurii Nikolaevich Orlov ◽  
Viktor Olegovich Soloviev
Keyword(s):  
Wave Propagation ◽  
Detonation Wave ◽  
Cylindrical Channel ◽  
Propagation Modeling ◽  
Wave Propagation Modeling ◽  
Detonation Wave Propagation
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