Numerical Finite Element Method (FEM) for Scattering from Randomly Rough Surface and Target

2006 ◽  
pp. 260-309
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rough Surface ◽  
Numerical Finite Element ◽  
Randomly Rough Surface ◽  
Element Method

Estimation of Sound Absorption Performance of Complex Perforated Panel Absorbers by Numerical Finite Element Method and Examinining the Role of Different Layouts Behind It

2019 ◽  
Vol 18 (03) ◽  
pp. 1950013
Author(s):  
Z. Hashemi ◽  
M. R. Monazzam ◽  
A. Fahim
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Sound Absorption ◽  
Current Method ◽  
The Finite Element Method ◽  
Impedance Tube ◽  
Absorption Performance ◽  
Numerical Finite Element ◽  
Element Method

Perforated panels are one of the structures that are widely used nowadays. The sound absorption behavior of materials is studied by solving the equations governing the wave propagation in these materials. In this paper, the finite element method (FEM) was used to predict the absorption performances of few different perforated composite panels. Also, the studied structures were examined by two-microphone impedance tube to validate the results of the numerical method. The relative consistency of the results of the current method with the results of the impedance tube suggests the accuracy of this method in simulating the absorption rate of perforated composites. In addition, the results of evaluating various layouts (arrangements) showed that the use of absorber materials with higher flow resistivity at the back of the perforated panel and at the beginning of the sound wave entry increases the absorption performance by 1.6 times than that of the inverse layout ratio.

scholarly journals A robust and efficient numerical finite element method for cables

2020 ◽  
Vol 121 (18) ◽  
pp. 4157-4186
Author(s):  
C. Bertrand ◽  
V. Acary ◽  
C.‐H. Lamarque ◽  
A. Ture Savadkoohi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Finite Element ◽  
Element Method

Rough surface contact analysis by means of the Finite Element Method and of a new reduced model

2011 ◽  
Vol 339 (7-8) ◽  
pp. 473-490 ◽  
Author(s):  
Vladislav A. Yastrebov ◽  
Julian Durand ◽  
Henry Proudhon ◽  
Georges Cailletaud
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rough Surface ◽  
Contact Analysis ◽  
Reduced Model ◽  
The Finite Element Method ◽  
Surface Contact ◽  
Rough Surface Contact ◽  
Element Method
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