Kriging-based optimization of functionally graded structures

被引:0
作者
Marina Alves Maia
Evandro Parente
Antônio Macário Cartaxo de Melo
机构
[1] Universidade Federal do Ceará,Laboratório de Mecânica Computacional e Visualização, Departamento de Engenharia Estrutural e Construção Civil
来源
Structural and Multidisciplinary Optimization | 2021年 / 64卷
关键词
Kriging; Functionally graded materials; Sequential approximate optimization; Isogeometric analysis;
D O I
暂无
中图分类号
学科分类号
摘要
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.
引用
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页码:1887 / 1908
页数:21
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