• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Active and passive smart structures and integrated systems >Optimal Design of a Shape Memory Alloy Actuated Composite Structure with Iterative Finite Element Analysis
【24h】

Optimal Design of a Shape Memory Alloy Actuated Composite Structure with Iterative Finite Element Analysis

机译：具有迭代有限元分析的形状记忆合金致动复合结构的最佳设计

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hod is described for solving an inverse design problem to find the unassembled, stress-free componentshapes of a structure that is integrally actuated with shape memory alloy (SMA) actuators. Morphing and mul-tifunctional structures are of interest in the aerospace industry because of the potential for improving structuraland aerodynamic performance across multiple operating conditions. The focus of this work is on structures are morphed with SMA flexural actuators. For the case where the geometry is known for the unassembledcomponents, assembly can be simulated to find the assembled shapes of the morphing structure. In the usualdesign case, however, only the desired shapes as assembled are known in multiple actuation states, and the cor-responding unassembled shapes must be determined by an iterative solution process. An iterative finite elementanalysis approach to this problem is reported here. First an initial guess for the unassembled shapes is madeand assembly is simulated with the finite element method. The resulting shapes are found for both SMA phasesand compared with the desired shapes. A gradient-based optimization method is employed to update the initialgeometry and iteration continues until the desired shapes are achieved. A simplified method of modeling theSMA material behavior is used for computational efficiently. It is found that this approach provides a practicalway to solve the inverse design problem for structures that are integrally actuated with SMA material.
机译：描述了求解逆设计问题以找到与形状记忆合金（SMA）致动器一体致动的结构的未组装的无应力组件接收器。由于在多种操作条件下改善了结构和空气动力学性能的可能性，传真和多官能结构对航空航天行业感兴趣。这项工作的重点是结构与SMA弯曲执行器发生形态。对于几何形状对于未组制的Components已知的情况，可以模拟组件以找到变形结构的组装形状。然而，在泛uEndesign案例中，只有组装的所需形状在多个致动状态下已知，并且必须通过迭代解决方法确定COR响应的未组装形状。在此报告了这个问题的迭代有限元分析方法。首先是对未组装形状的初始猜测是Madeand组件，用有限元方法模拟。发现所得形状与所需的形状相比，SMA PHASESANS。采用基于梯度的优化方法来更新初始测量测量法，并且迭代继续，直到实现所需的形状。模拟基因材料行为的简化方法有效地用于计算。发现该方法提供了一种难以解决与SMA材料整体致动的结构的逆设计问题的实践道。

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