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Finite element modeling and fabrication of an SMA-SMP shape memory composite actuator

机译：SMA-SMP形状记忆复合执行器的有限元建模和制造

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摘要

Shape memory alloys and polymers have been extensively researched recently because of their unique ability to recover large deformations. Shape memory polymers (SMPs) are able to recover large deformations compared to shape memory alloys (SMAs), although SMAs have higher strength and are able to generate more stress during recovery.;This project focuses on procedure for fabrication and Finite Element Modeling (FEM) of a shape memory composite actuator. First, SMP was characterized to reveal its mechanical properties. Specifically, glass transition temperature, the effects of temperature and strain rate on compressive response and recovery properties of shape memory polymer were studied. Then, shape memory properties of a NiTi wire, including transformation temperatures and stress generation, were investigated. SMC actuator was fabricated by using epoxy based SMP and NiTi SMA wire. Experimental tests confirmed the reversible behavior of fabricated shape memory composites. (Abstract shortened by ProQuest.).
机译：形状记忆合金和聚合物由于其恢复大变形的独特能力，最近已得到广泛研究。与形状记忆合金（SMA）相比，形状记忆聚合物（SMP）能够恢复较大的变形，尽管SMA具有更高的强度并能够在恢复过程中产生更大的应力。;该项目的重点是制造过程和有限元建模（FEM） ）形状记忆复合驱动器。首先，对SMP进行表征以揭示其机械性能。具体来说，研究了玻璃化转变温度，温度和应变速率对形状记忆聚合物压缩响应和恢复性能的影响。然后，研究了NiTi线材的形状记忆特性，包括相变温度和应力产生。 SMC执行器是使用基于环氧树脂的SMP和NiTi SMA线制成的。实验测试证实了制造的形状记忆复合材料的可逆行为。 （摘要由ProQuest缩短。）。

著录项

  • 作者

    Souri, Mohammad.;

  • 作者单位

    University of Kentucky.;

  • 授予单位 University of Kentucky.;
  • 学科 Mechanical engineering.;Engineering.;Materials science.
  • 学位 Ph.D.
  • 年度 2014
  • 页码 101 p.
  • 总页数 101
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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