Sökning: "waveguide finite element"
Visar resultat 1 - 5 av 25 avhandlingar innehållade orden waveguide finite element.
1. Waveguide Finite Elements Applied on a Car Tyre
Sammanfattning : Structures acting as waveguides are quite common withexamples being, construction beams, fluid filled pipes, railsand extruded aluminium profiles. Curved structures like cartyres and pipe-bends may also be considered as waveguides. Wavesolutions in such structures may be found by a method calledthe Waveguide Finite Element Method or WFEM. LÄS MER
2. Numerical methods for waveguide modelling
Sammanfattning : Waveguides are used to transmit electromagnetic signals. Their geometry is typically long and slender. This particular shape can be used in the design of efficient computational methods. Only special modes are transmitted and eigenvalue and eigenvector analysis becomes important. LÄS MER
3. Direct and Inverse Methods for Waveguides and Scattering Problems in the Time Domain
Sammanfattning : Numerical simulation is an important tool in understanding the electromagnetic field and how it interacts with the environment. Different topics for time-domain finite-difference (FDTD) and finite-element (FETD) methods for Maxwell's equations are treated in this thesis. LÄS MER
4. Modern numerical methods in electromagnetics applied to the design of reflector antennas and horn feeds
Sammanfattning : .... LÄS MER
5. Effective vibro-acoustical modelling of rubber isolators
Sammanfattning : This thesis, gathering four papers, concerns the enhancement in understanding and modelling of the audible dynamic stiffness of vibration rubber isolators including experimental measurements. Paper A studies the performances of three different types of vibration isolator using an indirect measurement technique to estimate the blocked dynamic transfer stiffness of each specimen. LÄS MER