...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Smart Materials & Structures >Smart material based mechanical switch concepts for the variation of connectivity in the core of shape-adaptable sandwich panels
【24h】

Smart material based mechanical switch concepts for the variation of connectivity in the core of shape-adaptable sandwich panels

机译：基于智能材料的机械开关概念，适用于核心芯的连接性变化

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

Smart material based variable internal connectivity has the potential to overcome the inherent conflicting requirements of lightweight shape adaptable structures by reducing the actuation force required for shape adaptation, and, consequently, volume and mass of the actuation system, by increasing the compliance of the structure temporarily. In this paper, we consider shape adaptable sandwich panels with a truss core and implement smart material based variable connections, called mechanical switches, in the trusses of the core. We present three concepts of mechanical switches based on electro-bonded laminates, dielectric elastomer actuators and shape memory alloys, and evaluate their performance in terms of variation in stiffness and in maximum transferable force. Based on these results, we show how the implementation of variable connections in the core trusses can be used to reduce the actuation force by different orders of magnitude for three simple types of deformation of the panel: change in thickness, in transverse shear angle and bending. Further, considering the influence of the mechanical switches on the out-of-plane stiffness of the core, we demonstrate that this approach can be used to obtain changes in thickness of the panel, a kind of deformation that is not possible to obtain with other approaches found in literature. Moreover, we show that mechanical switches can be used to selectively vary the shear stiffness of the panel in the desired direction. Finally, we analyze the limitations of this technology in terms of mechanical properties in order to identify possible applications.
机译：基于智能材料的可变内部连接有可能通过减少形状适应所需的致动力，以及致动系统的体积和质量来克服轻质形状适应性结构的固有冲突要求。通过暂时增加结构的依从性。在本文中，我们考虑使用桁架芯的形状适应性夹层面板，并在核心的桁架中实现智能材料基于智能材料的可变连接，称为机械开关。我们基于电粘合的层压板，介电弹性体致动器和形状记忆合金提出了三种机械开关的概念，并在刚度的变化和最大可转力方面评价它们的性能。基于这些结果，我们展示了如何使用横梁三种简单变形的不同数量级的可变连接的实现如何降低致动力：厚度变化，横向剪切角度和弯曲。此外，考虑到机械开关对核心外平面刚度的影响，我们证明这种方法可用于获得面板厚度的变化，一种不可能获得的变形文学中发现的方法。此外，我们表明机械开关可用于选择性地改变面板的剪切刚度在所需方向上。最后，我们在机械性能方面分析了该技术的局限性，以识别可能的应用。

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