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

2021; Elsevier BV; Volume: 249; Linguagem: Inglês

10.1016/j.compstruc.2021.106508

1879-2243

Matheus Brendon Francisco, João Luiz Junho Pereira, Guilherme Antônio Oliver, Fernando Helton Sanches da Silva, Sebastião Simões Cunha, Guilherme Ferreira Gomes,

Probabilistic and Robust Engineering Design

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.