Effectiveness of the Parallel Implementation of the FEM for the Problem of the Surface Waves Propagation

2015 ◽  
pp. 233-240
Author(s):  
Evgeniya Karepova ◽  
Ekaterina Dementyeva
Keyword(s):  
Surface Waves ◽  
Parallel Implementation ◽  
Waves Propagation

scholarly journals Propagation of Surface Waves in Asphalt Pavements Generated by Different Load Impulse of Falling Weight Deflectometer

2019 ◽  
Vol 15 (1) ◽  
pp. 29-35
Author(s):  
Jozef Komačka ◽  
IIja Březina
Keyword(s):  
Surface Waves ◽  
Travel Time ◽  
Time History ◽  
Asphalt Pavements ◽  
Load Force ◽  
Falling Weight Deflectometer ◽  
Waves Propagation ◽  
Propagation Of Waves ◽  
Falling Weight ◽  
The Waves

Abstract The propagation of waves generated by load impulse of two FWD types was assessed using test outputs in the form of time history data. The calculated travel time of wave between the receiver in the centre of load and others receivers showed the contradiction with the theory as for the receivers up to 600 (900) mm from the centre of load. Therefore, data collected by the sensors positioned at the distance of 1200 and 1500 mm were used. The influence of load magnitude on the waves propagation was investigated via the different load force with approximately the same load time and vice versa. Expectations relating to the travel time of waves, depending on the differences of load impulse, were not met. The shorter travel time of waves was detected in the case of the lower frequencies. The use of load impulse magnitude as a possible explanation was not successful because opposite tendencies in travel time were noticed.

scholarly journals Interaction between surface waves on wire lines

2021 ◽  
Vol 477 (2246) ◽  
pp. 20200795
Author(s):  
Daniel Molnar ◽  
Tobias Schaich ◽  
Anas Al-Rawi ◽  
Mike Payne
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Surface Waves ◽  
Short Range ◽  
Cross Coupling ◽  
High Bandwidth ◽  
Waves Propagation ◽  
Analytic Models ◽  
Remarkable Agreement ◽  
Optimum Separation

This paper investigates coupling between electromagnetic surface waves on parallel wires. Finite-element method (FEM)-based and analytic models are developed for single- and double-wire Sommerfeld and Goubau lines. Models are validated via measurements for Goubau lines and a comparison between the analytic and the FEM-based computations for coupled Sommerfeld- and Goubau-type lines is carried out. The measurements and calculations show remarkable agreement. The FEM-based and analytic models match remarkably well too. The results exhibit new favourable effects for surface waves propagation over multiple conductors. The short-range behaviour of the coupled wires and, consequently, the existence of an optimum separation of coupled wires is one of the most significant findings of this paper. We comment on the relevance of our results, particularly in relation to applications of high bandwidth demands and cross-coupling effects.

Higher modes of seismic surface waves: Propagation in Eurasia

1966 ◽  
Vol 56 (6) ◽  
pp. 1227-1239 ◽  
Author(s):  
Stuart Crampin
Keyword(s):  
Surface Waves ◽  
Rapid Change ◽  
Phase Relationship ◽  
Dispersion Characteristics ◽  
Constructive Interference ◽  
Higher Modes ◽  
Mountain Ranges ◽  
Seismic Surface Waves ◽  
Wave Trains ◽  
Waves Propagation

Abstract Second Love and second Rayleigh modes are found to propagate in Eurasia across many different structures; the continent is divided into regions where these higher modes have the same dispersion characteristics. The condition for constructive interference breaks down only when the second modes cross areas of rapid change at oceanic-continental boundaries and under some mountain ranges. There are many paths in Eurasia where the second Love and Rayleigh modes have the same dispersion, and along these paths the two wave trains have a constant phase relationship, suggesting that the modes have some form of elastic linkage.

The effect of nickel nanostructure on surface waves propagation in silicon support

2012 ◽  
Vol 527 ◽  
pp. 96-100 ◽  
Author(s):  
A. Trzaskowska ◽  
S. Mielcarek ◽  
B. Graczykowski ◽  
B. Mroz ◽  
P. Patoka ◽  
...  
Keyword(s):  
Surface Waves ◽  
Waves Propagation
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