STRUT-AND-TIE MODELS ANALYSIS USING NONLINEAR FORMULATION VIA TOPOLOGICAL OPTIMIZATION

• Grant number: 16/02327-5
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2017
• End date: January 31, 2019
• Field of knowledge: Engineering - Civil Engineering - Structural Engineering
• Principal Investigator: Valério da Silva Almeida
• Grantee: Valério da Silva Almeida
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The present work aims to the topological optimization application for elasticity problems in tridimensional field applied in the determination of strut-and-tie models in reinforcement concrete structures. In this context, it must be developed a numerical model which applies finite element analysis using 3D truss bars finite element where it must be incorporated geometrical and physical nonlinear formulation for better representation of the structure behavior. In order to propose an effective tool for developing strut-and-tie models, this work uses the technique in topology optimization called ESO - Evolutionary Structural Optimization. The method is based on the procedure of radical withdrawing of the inefficient elements at lower stress until it no longer has influence. The final optimal topology in strut-and-tie models must be presented, discussed and compared with each other when applied both linear and nonlinear analysis for solving classical examples in structural problems, as deep beams, pile caps or corbel joints. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SIMONETTI, HELIO LUIZ; ALMEIDA, VALERIO S.; DAS NEVES, FRANCISCO DE ASSIS; ALMEIDA, VIRGIL DEL DUCA; CUTRIM, MARLAN D. S.. 3D Structural Topology Optimization Using ESO, SESO and SERA: Comparison and an Extension to Flexible Mechanisms. APPLIED SCIENCES-BASEL, v. 13, n. 10, p. 22-pg., 2023-05-19. (16/02327-5)

SIMONETTI, HELIO LUIZ; ALMEIDA, VALERIO SILVA; DE ASSIS DAS NEVES, FRANCISCO; DEL DUCA ALMEIDA, VIRGIL; DE OLIVEIRA NETO, LUTTGARDES. Reliability-Based Topology Optimization: An Extension of the SESO and SERA Methods for Three-Dimensional Structures. APPLIED SCIENCES-BASEL, v. 12, n. 9, p. 24-pg., 2022-05-01. (16/02327-5)

SIMONETTI, HELIO LUIZ; DAS NEVES, FRANCISCO DE ASSIS; ALMEIDA, VALERIO S.. Multiobjective topology optimization with stress and strain energy criteria using the SESO method and a Multicriteria Tournament Decision. STRUCTURES, v. 30, p. 188-197, APR 2021. (16/02327-5)