A 2.5D coupled FEM-BEM-MFS methodology for longitudinally invariant soil-structure interaction problems

This paper is concerned with a new prediction methodology for longitudinally invariant soil-structure interaction problems in elastodynamics. The method uses the finite-element to model structure, boundary-element local soil surrounding structure and of fundamental solutions wave propagation through soil, all them formulated two-and-a-half dimensional domain. proposed firstly obtains displacement field on boundary making use coupled finite element–boundary element method. used then as post-processing tool compute response increasing computational efficiency overall respect that considers soil. accuracy verified four calculation examples: solid cylinder circular thin shell embedded homogeneous full-space also half-space. verification performed comparing results available analytical or semi-analytical conventional Furthermore, control increase robustness presented.