Multiobjective design optimization of CFRP isogrid tubes using sunflower optimization based on metamodel

•Multi-objective optimization approach to maximize the structural performance.•A surrogate model was used for reducing manufacturing costs.•SunFlower optimization was used to find the optimal configuration of the structure.•The compression, torsion and modal performance were evaluated.•The obtained...

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Bibliographic Details
Published in:Computers & structures 2021-06, Vol.249, p.106508, Article 106508
Main Authors: Francisco, Matheus Brendon, Pereira, João Luiz Junho, Oliver, Guilherme Antônio, da Silva, Fernando Helton Sanches, da Cunha, Sebastião Simões, Gomes, Guilherme Ferreira
Format: Article
Language:English
Subjects:
Algorithms
Buckling
Composites
Compression tests
Configurations
Design optimization
Isogrid structure
Mathematical analysis
Metamodels
Multi objective
Multiple objective analysis
Numerical analysis
Resonant frequencies
Response surface methodology
Sunflower optimization
Sunflowers
Tubes
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Summary:•Multi-objective optimization approach to maximize the structural performance.•A surrogate model was used for reducing manufacturing costs.•SunFlower optimization was used to find the optimal configuration of the structure.•The compression, torsion and modal performance were evaluated.•The obtained results can be very useful in the design of this kind of structures. In this paper, the authors carried out the optimization of an isogrid structure considering six different responses: Tsai-Wu failure index under compression and torsion efforts; instability coefficient under compression and torsion efforts; mass and natural frequency. The response surface methodology was used to find the functions that describe the model from the data found by numerical analysis; and a new optimization algorithm called SunFlower Optimization (SFO) was used to find the best possible configurations. This paper shows something unprecedented in the literature to date when evaluating the compression, torsion, and modal performance of an isogrid tube. The simultaneous evaluation of several responses brings something more real to the scientific world, the results obtained here suggest that the optimal configuration for one response can be very bad for others and the use of a multi-objective optimization solved this problem.
ISSN:0045-7949
1879-2243
DOI:10.1016/j.compstruc.2021.106508