...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Smart Materials & Structures >Novel MRE/CFRP sandwich structures for adaptive vibration control
【24h】

Novel MRE/CFRP sandwich structures for adaptive vibration control

机译：用于自适应振动控制的新型MRE / CFRP三明治结构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of this work was the development of sandwich structures formed by embedding magnetorheological elastomers (MRE) between constrained layers of carbon fibre-reinforced plastic (CFRP) laminates. The MREs were obtained by mechanical stirring of a reactive mixture of substrates with carbonyl-iron particles, followed by orienting the particles into chains under an external magnetic field. Samples with particle volume fractions of 11.5% and 33% were examined. The CFRP/MRE sandwich structures were obtained by compressing MREs samples between two CFRP laminates composed. The used A.S.SET resin was in powder form and the curing process was carried out during pressing with MRE. The microstructure of the manufactured sandwich beams was inspected using SEM. Moreover, the rheological and damping properties of the examined materials with and without a magnetic field were experimentally investigated. In addition, the free vibration responses of the adaptive three-layered MR beams were studied at different fixed magnetic field levels. The free vibration tests revealed that an applied non-homogeneous magnetic field causes a shift in natural frequency values and a reduction in the vibration amplitudes of the CFRP/MRE adaptive beams. The reduction in vibration amplitude was attributed mainly to the stiffening effect of the MRE core and only a minor contribution was made by the enhanced damping capacity, which was evidenced by the variation in damping ratio values.
机译：这项工作的目的是开发通过将磁流变弹性体（MRE）嵌入碳纤维增强塑料（CFRP）层压板的受约束层之间而形成的三明治结构。通过机械搅拌底物与羰基铁颗粒的反应混合物，然后在外部磁场下将颗粒定向成链来获得MRE。检查了具有11.5％和33％的颗粒体积分数的样品。 CFRP / MRE夹层结构是通过在两个CFRP层压板之间压缩MRE样品而获得的。用过的A.S.SET树脂为粉末形式，固化过程在MRE压制过程中进行。使用SEM检查所制造的夹层梁的微观结构。此外，还对实验材料在有或没有磁场的情况下的流变和阻尼性能进行了实验研究。另外，研究了在不同固定磁场水平下自适应三层MR束的自由振动响应。自由振动测试表明，施加的非均匀磁场会导致固有频率值发生偏移，并导致CFRP / MRE自适应梁的振动幅度减小。振动幅度的减小主要归因于MRE芯的加强效果，而阻尼能力的提高仅贡献了很小的一部分，这可以通过阻尼比值的变化来证明。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号