3D non-linear time domain FEM-BEM approach to soil-structure interaction problems
|Romero Ordóñez, Antonio
Domínguez Abascal, José
|Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras
|Dynamic soil-structure interaction is concerned with the study of structures supported on ﬂexible soils and
subjected to dynamic actions. Methods combining the ﬁnite element method (FEM) and the boundary
element method ...
Dynamic soil-structure interaction is concerned with the study of structures supported on ﬂexible soils and subjected to dynamic actions. Methods combining the ﬁnite element method (FEM) and the boundary element method (BEM) are well suited to address dynamic soil-structure interaction problems. Hence, FEM-BEM models have been widely used. However, non-linear contact conditions and non-linear behaviour of the structures have not usually been considered in the analyses. This paper presents a 3D non-linear time domain FEM-BEM numerical model designed to address soil-structure interaction problems. The BEM formulation, based on element subdivision and the constant velocity approach, was improved by using interpolation matrices. The FEM approach was based on implicit Green’s functions and non-linear contact was considered at the FEM-BEM interface. Two engineering problems were studied with the proposed methodology: the propagation of waves in an elastic foundation and the dynamic response of a structure to an incident wave ﬁeld.
|Ministerio de Economía y Competitividad (MINECO). España
|Romero Ordóñez, A., Galvín, P. y Domínguez Abascal, J. (2013). 3D non-linear time domain FEM–BEM approach to soil–structure interaction problems. Engineering Analysis with Boundary Elements, 37 (3), 501-512.