Differential evolution for optimization of functionally graded beams

被引：52

作者：

Roque, C. M. C. ^{[1
]}

Martins, P. A. L. S. ^{[1
]}

机构：

[1] Univ Porto, Fac Engn, INEGI, P-4200465 Oporto, Portugal

来源：

COMPOSITE STRUCTURES | 2015年 / 133卷

关键词：

Differential evolution; Functionally graded material; Timoshenko beam; Free vibration; Optimization; FREE-VIBRATION; COMPOSITE PLATES; TIMOSHENKO; ALGORITHM; BEHAVIOR;

D O I：

10.1016/j.compstruct.2015.08.041

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Differential evolution optimization is used to find the volume fraction that maximizes the first natural frequency for a functionally graded beam. A formulation using three parameters is used to describe volume fraction. Beams with different ratios of material properties are considered. Two methods are used to compute the natural frequencies, analytical and meshless numerical method. Results show that differential evolution is capable to find distributions for volume fraction that increase the natural frequency of beams. It was also found that the RBF numerical method can be used with differential evolution to solve problems related to maximization of natural frequencies in functionally graded beams. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1191 / 1197

页数：7

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