Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
A topology optimization study of structural foundations considering dynamic loading
Submission Author:
Renato Picelli , SP
Co-Authors:
Kamilla Emily Santos Silva, Josue Labaki, Renato Picelli
Presenter: Renato Picelli
doi://10.26678/ABCM.DINAME2023.DIN2023-0128
Abstract
This work presents a topology optimization study of structural foundations subject to dynamic loading from in-soil sources. In this approach, a large square region within the soil is defined as a design domain, where the foundation should exist and provide support for a tower above the soil. The physical problem is solved via the Finite Element Method (FEM). The perfectly matched layer (PML) approach is employed to absorb dynamic waves and simulate the infinite domain. Decision variables indicate the material properties for each finite element in the design domain mesh, being either concrete (variable 1) or soil (variable 0). The goal is to find the structural foundation topology (0,1) that minimizes the squared difference of the displacements between the top and bottom points of the tower subject to a maximum mass of concrete used. Dynamic loading is applied in different locations, under and at the soil surface. The optimization problem is solved by employing sequential integer linear programming via the Topology Optimization of Binary Structures (TOBS) method. Sensitivities are calculated by semi-automatic differentiation and the optimizer is based on the branch-and-bound algorithm. Numerical results show the potential of topology optimization to provide insights about the soil-structure interaction and the design of structural foundations subject to dynamic loads.
Keywords
Topology optimization, Structural Design, dynamic loads, Soil-Structure Interaction
