Dissertation > Excellent graduate degree dissertation topics show

Research and analysis of finite element / boundary integral method

Author: XiaAiLong
Tutor: YeXiaoDongï¼›ChenRuShan
School: Nanjing University of Technology and Engineering
Course: Electromagnetic Field and Microwave Technology
Keywords: Finite Element Method Finite element / boundary integral method Singular term extraction Finite element tearing docking method Half-space Multi - layer UV method
CLC: O441.4
Type: Master's thesis
Year: 2009
Downloads: 147
Quote: 0
Read: Download Dissertation

Abstract


In the field of computational electromagnetics , the finite element method is particularly suited to address the moment method is suitable for processing open domain with complex geometry problems . A collection of their respective advantages , the development of a hybrid algorithm : a finite element / boundary integral method ( FE - BI) . In this paper, the FE-BI method based binding domain decomposition method , the multilayer UV method , electromagnetic scattering problems , the main tasks include the following aspects : First, according to the basic principles of the finite element / boundary integral method , derived detailed formulas , discussion on the combination of boundary integral part of the equation , and present three methods for solving the FE-BI matrix equations . Then , a detailed discussion of the key technologies of the singularity extraction method of calculation of the impedance matrix elements in the mixed field integral equation using improved singular term extraction method to deal with the singularity points . Secondly , in order to analyze the frequency containing medium load selective surface , part of the finite element finite element tearing docking method , boundary integral part of the parallel fast multipole technology . For such a thin dielectric layer structure , due to the poor part of the finite element sparse matrix condition number , the destruction of the whole behavior of the FE-BI system matrix , the outer iteration steps increase , but convergence is slow . For this case , the finite element tearing butt portion ultimately reduce the matrix solution algorithm has been improved . In addition, in order to reduce the number of outer iteration step , we adopt FGMRES external iteration accelerated solution to save computation time . Finally , because of the needs of the target environment integrated modeling , this paper studied the electromagnetic scattering characteristics of the target object in a half-space environment . In addition , for accurate , quick calculation of the electromagnetic scattering characteristics of the target object in a complex environment , the introduction of a multi-layer UV method to reduce the impedance matrix elements fill time , ease the memory requirements .

Related Dissertations

  1. Research on the Structure and Characteristics of Permanent Magnetic Coupling,TH139
  2. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  3. Stability Analysis of Roller Compacted Concrete Gravity Dam Based on Time-history Method,TV642.2
  4. Research on Intelligent Aerial Bomb for Forest Fire Fighting,S762
  5. The Band Structure in 2D Resonant Phononic Crystal,O735
  6. Research on Sensing with High Birefringent Photonic Crystal Fiber,TP212
  7. Numerical and Experimental Studies for Multi-Cracks of Asphalt Pavement with Semi-Rigid Basement Asphalt,U416.217
  8. Study on the Influence of Various Defects on the Characteristics of Infrared Photonic Crystal Fiber,TN253
  9. Applications of Vector Finite Element Method to Simulate Logging While Drilling Resistivity Tools,P631.83
  10. Uniform deformation laminate interlaminar stresses Numerical simulation and high-temperature creep behavior of 40Cr steel,TB33
  11. Scrap copper smelting furnace temperature measurement method,TF811
  12. Space hyperspectral imager Compensation focusing optical system of pre-,TH743
  13. Study of Composite Drive Shaft for an Automobile,U465.6
  14. Vehicle-mounted snubbing workover rig derrick Design and analysis,TE935
  15. Particle reinforced copper matrix composites mechanical behavior of finite element analysis,TB331
  16. Finite element analysis of gear transmission machine and Kinetics,TH132.41
  17. Large opening pressure vessel structural finite element analysis and strength design,TH49
  18. Composite cage rotor induction motor starting performance of the design and research,TM343
  19. More rarely slot reactance permanent magnet synchronous motor parameter calculation and research,TM341
  20. Magnetic induction tomography forward problem and reconstruction algorithm,TP391.41
  21. Ultimate Strength and Reliability,U661.43

CLC: > Mathematical sciences and chemical > Physics > Electromagnetics,electrodynamics > Electricity and Magnetism > Electromagnetic waves and electromagnetic fields
© 2012 www.DissertationTopic.Net  Mobile