Finite continuum elements in 2.5D
* Präsentierender Autor
Zusammenfassung:The goal of the project is the simulation of vibrations from trains in tunnels. The simulation is divided into two parts. The first part is the simulation of a horizontally layered anisotropic half-space and the second part is the simulation of the tunnel structure. It is assumed that the tunnel is straight and infinity long. Therefore, as Fourier transformation is used about time and the longitudinal axis. In the past 2.5D boundary, elements are derived for a layered anisotropic medium. Now, finite elements are presented in 2.5D for the simulation of the tunnel structure. A 3 node triangular element is derived for the tunnel shell and a beam element will be added for the simulation of the rail. The load will be a moving vibrating force as a part of a high speed train. The effect of several axis can be simulated by a superposition of incoherent loads using shifts in space that lead to a modulation in the wave-number domain.