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On the use of discontinuous elastomer patches to optimize the damping properties of composite sandwich plates

机译:关于使用不连续的弹性体补片来优化复合夹芯板的阻尼性能

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摘要

This study investigates the optimization of a hybrid composite/elastomer sandwich plate structure using a periodical pattern of viscoelastic material. Design variables consist in the thicknesses of the layers, their fiber orientations, the position of the elastomer patches and their geometrical distribution. Damping properties of the hybrid structure are calculated by the Method of Strain Energy (MSE) and the constrained optimization maximizes these properties using the active-set algorithm. Two optimized plates containing patterns embedded or not in a composite matrix are compared with a plate damped by a continuous viscoelastic layer. Results show that optimizing composite plates with patches gives interesting results: damping properties are about ten times the properties of the plates with continuous viscoelastic layers, the patches can be sticked on the external layers of the plate and not internally, and all the strain components in elastomer are involved in damping.
机译:这项研究调查了使用粘弹性材料的周期性模式的混合复合材料/弹性体夹心板结构的优化。设计变量包括层的厚度,它们的纤维取向,弹性体补片的位置及其几何分布。混合结构的阻尼特性通过应变能方法(MSE)计算,而受约束的优化使用主动集算法将这些特性最大化。将包含嵌入或未嵌入复合基质中的图案的两个优化板与被连续粘弹性层阻尼的板进行比较。结果表明,优化带有贴片的复合板可获得有趣的结果:阻尼特性约为具有连续粘弹性层的板的性能的十倍,贴片可以粘在板的外层而不是内部,并且所有应变分量弹性体参与阻尼。

著录项

  • 来源
    《Composite Structures》 |2011年第11期|p.3057-3062|共6页
  • 作者

    N. Le Maout; E. Verron; J. Begue;

  • 作者单位

    Institut de Recherche en Genie Civil et Mecanique, UMR CNRS 6183, Ecole Centrale Nantes, BP 92101, 44321 Nantes cedex 3, France;

    Institut de Recherche en Genie Civil et Mecanique, UMR CNRS 6183, Ecole Centrale Nantes, BP 92101, 44321 Nantes cedex 3, France;

    Centre Technique des Industries Mecaniques (CETIM), Technocampus EMC2, ZI du Chaffault, 44340 Bouguenais, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    passive damping; discontinuous elastomer patches; periodic pattern; method of strain energy (MSE); optimization;

    机译:被动阻尼;不连续的弹性体斑块;周期性模式;应变能(MSE)方法;优化;

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