Pre-processing of 3D CAD data for electromagnetic simulations by the method of moments

2002 ◽  
Author(s):  
R. Jobava ◽  
S. Frei ◽  
F. Bogdanov ◽  
A. Gheonjian ◽  
R. Kvaratskhelia ◽  
...  
Keyword(s):  
Method Of Moments ◽  
3D Cad ◽  
Electromagnetic Simulations

scholarly journals Optimization of Modified Yagi-Uda Nanoantenna Arrays Using Adaptive Fuzzy GAPSO

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Pitther N. Santos ◽  
Victor Dmitriev ◽  
Karlo Q. da Costa
Keyword(s):  
Transmission Line ◽  
Method Of Moments ◽  
Fuzzy System ◽  
Optimization Method ◽  
Voltage Source ◽  
Swarm Optimization ◽  
Adaptive Fuzzy ◽  
Electromagnetic Simulations ◽  
Loop Element ◽  
Nanoantenna Arrays

This paper presents an optimization of the radiation and absorption characteristics of modified Yagi-Uda (YU) nanoantenna arrays. Four geometries of antennas are considered: conventional YU fed by voltage source and transmission line, and YU with a loop element fed by voltage source and transmission line. The numerical electromagnetic simulations of these nanoantennas were made by the method of moments (MoM). The optimization method used is the adaptive fuzzy GAPSO, which consists of hybridization between genetic algorithm (GA) and particle swarm optimization (PSO), with a fuzzy system employed to adapt the inertial weight ω and the acceleration coefficients C1 and C2 of PSO. The optimized results show that the modified YU nanoantennas present better characteristics of gain, directivity, and radiation efficiency than the conventional YU antenna.

Advances in rib waveguide analysis using the weighted index method or the method of moments

1990 ◽  
Vol 137 (1) ◽  
pp. 27 ◽  
Author(s):  
P.C. Kendall ◽  
M.J. Robertson ◽  
P.W.A. McIlroy ◽  
S. Ritchie ◽  
M.J. Adams
Keyword(s):  
Method Of Moments ◽  
Index Method ◽  
Rib Waveguide ◽  
Weighted Index

APPLYING THE ISF TECHNOLOGY TO PRODUCE THE CAR PART MODELS

2010 ◽  
Vol 13 (4) ◽  
pp. 91-98
Author(s):  
Tuan Dinh Phan ◽  
Binh Thien Nguyen ◽  
Dien Khanh Le ◽  
Phuong Hoang Pham
Keyword(s):  
Rapid Prototyping ◽  
Incremental Sheet Forming ◽  
Cad Model ◽  
Post Processing ◽  
Technological Parameters ◽  
Batch Production ◽  
Complex Products ◽  
3D Cad ◽  
Real Size ◽  
Single Batch

The paper presents an application the research results previously done by group on the influence of technological parameters to the deformation angle and finish surface quality in order to choose technology parameters for the incremental sheet forming (ISF) process to produce products for the purpose of rapid prototyping or single-batch production, including all steps from design and process 3D CAD model, calculate and select the technological parameters, setting up manufacturing and the stage of post-processing. The samples formed successfully showed high applicability of this technology to practical work, the complex products with the real size can be produced in industries: automotive, motorcycle, civil...

Soot Particle Deposition within Porous Structures using a Method-of-Moments-Lattice-Boltzmann Approach

2006 ◽  
Vol v4 (i2) ◽  
pp. 221-232
Author(s):  
Bernhard F.W. Gschaider ◽  
Claudia C. Honeger ◽  
Christian E. P. Redl ◽  
Johannes Leixnering
Keyword(s):  
Method Of Moments ◽  
Lattice Boltzmann ◽  
Particle Deposition ◽  
Soot Particle ◽  
Porous Structures
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