Abstract
A user element subroutine (UEL) to be used into the commercial finite element code ABAQUS has been developed and implemented. The subroutine is intended to treat generalized wave propagation problems in 2D-domains and in particular wave scattering problems. It has been formulated in the frequency domain, but fully implemented in terms of real-valued degrees of freedom as required by ABAQUS. Results are obtained both in the frequency and time domain. The subroutine is tested in the solution of problems related to topographic effects in earthquake engineering and in the propagation of waves in materials with microstructure introducing dispersion. Results have been provided in the frequency and in the time domain. The frequency domain is not only powerful from a conceptual point of view, since it offers many insights into the physical aspects of the problem, but it also has other advantages like:
Easy incorporation of excitations based on plane wave assumptions.
Simultaneous Consideration of temporal and spatial periodicity.
Easy consideration of dispersive materials.
Ver proyecto completo.