Dynamic Interaction Between Structures Modeled by Two-dimensional Finite Element and the Soil-foundation System.
Ronaldo Carrion1; Luiz Carlos Facundo Sanches2; Phelipe Gabriel Varoni3
1 Escola Politécnica - USP; 2 UNESP - São João da Boa Vista; 3 Escola de Engenharia de São Carlos - USP
doi:10.20906/CPS/COB-2015-0869
Resumo
In the present article a direct version of the Boundary Element Method (BEM) is applied to synthesize the 3D dynamic compliance matrix of a rigid and massless foundation interacting with unbounded soil profiles. The foundation compliance matrix is coupled to a 2D structure, modeled by Finite Element Method (FEM) leading to the dynamic response of a coupled structure-foundation-soil system. The direct version of the 3D Boundary Element Method (DBEM) is built based on the stationary fundamental solution of an elastic full-space where viscoelastic effects are incorporated by means of the elastic-viscoelastic correspondence principle. The article describes the methodology applied to couple rigid bodies with the BEM mesh. The result of the soil-foundation interaction is given in terms of a dynamic compliance matrix for a rigid and massless foundation. The structural analysis of the 2D structure is based on the FEM where linear triangular finite elements are coupled to soil-foundation system. This strategy allows performing frequency domain analysis of a structure-foundation-soil system.
Palavras-chave: Finite Element Method; Dynamic Soil-structure Interaction; Boundary Element Method