Damping optimization of viscoelastic laminated sandwich composite structures

被引：59

作者：

Araujo, A. L. ^{[1
]}

Martins, P. ^{[2
]}

Soares, C. M. Mota ^{[2
]}

Soares, C. A. Mota ^{[2
]}

Herskovits, J. ^{[3
]}

机构：

[1] Polytech Inst Braganca, ESTIG, P-5301857 Braganca, Portugal

[2] Univ Tecn Lisboa, IDMEC IST, P-1049001 Lisbon, Portugal

[3] Univ Fed Rio de Janeiro, COPPE, BR-21945970 Rio De Janeiro, Brazil

来源：

STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION | 2009年 / 39卷 / 06期

关键词：

Sandwich structures; Layerwise finite element model; Passive damping; Multiobjective optimization; Gradient optimization; Genetic algorithms; FEASIBLE DIRECTIONS ALGORITHM; FINITE-ELEMENT; BOUNDARY-CONDITIONS; GENETIC ALGORITHM; BEAMS; DESIGN; VIBRATION; PLATES; LAYERS; MODEL;

D O I：

10.1007/s00158-009-0390-4

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Recent developments on the optimization of passive damping for vibration reduction in sandwich structures are presented in this paper, showing the importance of appropriate finite element models associated with gradient based optimizers for computationally efficient damping maximization programs. A new finite element model for anisotropic laminated plate structures with viscoelastic core and laminated anisotropic face layers has been formulated, using a mixed layerwise approach. The complex modulus approach is used for the viscoelastic material behavior, and the dynamic problem is solved in the frequency domain. Constrained optimization is conducted for the maximization of modal loss factors, using gradient based optimization associated with the developed model, and single and multiobjective optimization based on genetic algorithms using an alternative ABAQUS finite element model. The model has been applied successfully and comparative optimal design applications in sandwich structures are presented and discussed.

引用

页码：569 / 579

页数：11

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