Kriging-based optimization of functionally graded structures
| Autor: | Marina Alves Maia, Evandro Parente, Antônio Macário Cartaxo de Melo |
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| Rok vydání: | 2021 |
| Předmět: |
Functionally graded materials
Mathematical optimization Control and Optimization Computer science Particle swarm optimization Isogeometric analysis Sequential approximate optimization Computer Graphics and Computer-Aided Design Computer Science Applications Kriging Correlation function (statistical mechanics) Surrogate model Control and Systems Engineering Robustness (computer science) Reduction (mathematics) Engineering design process Software |
| Zdroj: | Repositório Institucional da Universidade Federal do Ceará (UFC) Universidade Federal do Ceará (UFC) instacron:UFC |
| ISSN: | 1615-1488 1615-147X |
| DOI: | 10.1007/s00158-021-02949-5 |
| Popis: | This work presents an efficient methodology for the optimum design of functionally graded structures using a Kriging-based approach. The method combines an adaptive Kriging framework with a hybrid particle swarm optimization (PSO) algorithm to improve the computational efficiency of the optimization process. In this approach, the surrogate model is used to replace the high-fidelity structural responses obtained by a NURBS-based isogeometric analysis. In addition, the impact of key factors on surrogate modelling, as the correlation function, the infill criterion used to update the surrogate model, and the constraint handling is assessed for accuracy, efficiency, and robustness. The design variables are related to the volume fraction distribution and the thickness. Displacement, fundamental frequency, buckling load, mass, and ceramic volume fraction are used as objective functions or constraints. The effectiveness and accuracy of the proposed algorithm are illustrated through a set of numerical examples. Results show a significant reduction in the computational effort over the conventional approach. |
| Databáze: | OpenAIRE |
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