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Iterative coupling procedure applied to the transient response of dynamic soil-structure systems

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Titel: Iterative coupling procedure applied to the transient response of dynamic soil-structure systems
Autoren: Tovo,Otávio Augusto, Lima,Luis Filipe do Vale, Labaki,Josué, Damasceno,Daniela Andrade, Mesquita,Euclides
Quelle: Latin American Journal of Solids and Structures v.17 n.8 2020
Verlagsinformationen: Associação Brasileira de Ciências Mecânicas
Publikationsjahr: 2020
Bestand: SciELO Brazil (Scientific Electronic Library Online)
Schlagwörter: Dynamic soil structure interaction, viscoelastic soils, time-domain iterative coupling procedure, convolution integral
Beschreibung: This paper proposes a methodology to obtain the transient response of structural system interacting with soil-foundation schemes supported by viscoelastic soils. The structure and soil are divided into sub-systems. The time domain solution for each subsystem is formulated by an appropriated methodology. The equations of motion of structure are solved by Newmark integration algorithm. The transient response of the soil is obtained by a convolution integral. The convolution integral uses transient impulse response of viscoelastic soils. Newmark and convolution algorithms are formulated as input and output schemes, which, in turn, are plugged to the time stepping iterative algorithm. The scheme is applied to vertical response of a dynamical system interacting with a massless foundation laying on a soil modelled as a three-dimensional homogeneous viscoelastic half-space. For two distinct external forces, the resulting coupled displacements, interface forces, errors and number of iterations within each time step are provided.
Publikationsart: article in journal/newspaper
Dateibeschreibung: text/html
Sprache: English
Verfügbarkeit: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000800605
Rights: info:eu-repo/semantics/openAccess
Dokumentencode: edsbas.3F4C7085
Datenbank: BASE
Beschreibung
Abstract:This paper proposes a methodology to obtain the transient response of structural system interacting with soil-foundation schemes supported by viscoelastic soils. The structure and soil are divided into sub-systems. The time domain solution for each subsystem is formulated by an appropriated methodology. The equations of motion of structure are solved by Newmark integration algorithm. The transient response of the soil is obtained by a convolution integral. The convolution integral uses transient impulse response of viscoelastic soils. Newmark and convolution algorithms are formulated as input and output schemes, which, in turn, are plugged to the time stepping iterative algorithm. The scheme is applied to vertical response of a dynamical system interacting with a massless foundation laying on a soil modelled as a three-dimensional homogeneous viscoelastic half-space. For two distinct external forces, the resulting coupled displacements, interface forces, errors and number of iterations within each time step are provided.