ITERATIVE COUPLING PROCEDURE APPLIED TO THE TRANSIENT RESPONSE OF DYNAMIC SOIL-STRUCTURE SYSTEMS

OTÁVIO AUGUSTO TOVO; LUIS FILIPE DO VALE LIMA; JOSUÉ LABAKI; DANIELA DAMASCENO; EUCLIDES MESQUITA

doi:10.1590/1679-78256046

ITERATIVE COUPLING PROCEDURE APPLIED TO THE TRANSIENT RESPONSE OF DYNAMIC SOIL-STRUCTURE SYSTEMS

Authors

OTÁVIO AUGUSTO TOVO DEPARTAMENTO DE MECÂNICA COMPUTACIONAL, FACULDADE DE ENGENHARIA MECÂNICA, UNIVERSIDADE ESTADUAL DE CAMPINAS, CAMPINAS, SP, BRASIL HTTPS://ORCID.ORG/0000-0002-1127-3202
LUIS FILIPE DO VALE LIMA DEPARTAMENTO DE MECÂNICA COMPUTACIONAL, FACULDADE DE ENGENHARIA MECÂNICA, UNIVERSIDADE ESTADUAL DE CAMPINAS, CAMPINAS, SP, BRASIL HTTPS://ORCID.ORG/0000-0001-7682-2789
JOSUÉ LABAKI DEPARTAMENTO DE SISTEMAS INTEGRADOS, FACULDADE DE ENGENHARIA MECÂNICA, UNIVERSIDADE ESTADUAL DE CAMPINAS, CAMPINAS, SP, BRASIL HTTPS://ORCID.ORG/0000-0003-2024-4793
DANIELA DAMASCENO DEPARTAMENTO DE MECÂNICA COMPUTACIONAL, FACULDADE DE ENGENHARIA MECÂNICA, UNIVERSIDADE ESTADUAL DE CAMPINAS, CAMPINAS, SP, BRASIL HTTPS://ORCID.ORG/0000-0002-7660-982X
EUCLIDES MESQUITA DEPARTAMENTO DE MECÂNICA COMPUTACIONAL, FACULDADE DE ENGENHARIA MECÂNICA, UNIVERSIDADE ESTADUAL DE CAMPINAS, CAMPINAS, SP, BRASIL HTTPS://ORCID.ORG/0000-0001-6512-7596

DOI:

https://doi.org/10.1590/1679-78256046

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.

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Published

2020-09-02

Issue

Vol 17 No 8 (2020) - MecSol 2019 São Carlos

Section

MecSol 2019 São Carlos

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