3D Structural Topology Optimization Using ESO, SESO and SERA: Comparison and an Extension to Flexible Mechanisms

This article investigates the study of Topology Optimization (TO) in 3D elasticity problems to determine the optimal topology by applying the evolutionary methods of Smoothing Evolutionary Structural Optimization (SESO), Sequential Element Rejection and Admission (SERA), and Evolutionary Structural...

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Bibliographic Details
Published in:Applied sciences 2023-05, Vol.13 (10), p.6215
Main Authors: Simonetti, Hélio Luiz, Almeida, Valério S., Neves, Francisco de Assis das, Almeida, Virgil Del Duca, Cutrim, Marlan D. S.
Format: Article
Language:English
Subjects:
Additive manufacturing
Compliance
Elastostatics
ESO
Evolution
Hexahedral finite elements
Isotropic material
MATLAB
Methods
Modulus of elasticity
Numerical methods
Optimization
Sensitivity analysis
SERA
SESO
SIMP
Topology
Topology optimization
Variables
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Summary:This article investigates the study of Topology Optimization (TO) in 3D elasticity problems to determine the optimal topology by applying the evolutionary methods of Smoothing Evolutionary Structural Optimization (SESO), Sequential Element Rejection and Admission (SERA), and Evolutionary Structural Optimization (ESO). These procedures were implemented in MATLAB code as an extension of Top3d implemented for SIMP by using the eight-node hexahedral finite element formulation in three-dimensional elastostatic structures. The approaches conducted in the present study are demonstrated with numerical examples involving the compliance minimization criterion. Further, a brief synthesis of flexible mechanisms was studied to emphasize the performance of complaint mechanisms measured in terms of two design specifications/functionalities: mechanical and geometrical advantages, which are the highlights of this article. To show the gains of the proposed methods, numerical results obtained are compared with Solid Isotropic Material with Penalization (SIMP) models.
ISSN:2076-3417
2076-3417
DOI:10.3390/app13106215