Transverse Load Capacity at Mid-Span of Heat-Treated Nitinol and Finite Element Predictions

机译：热处理镍钛诺中跨的横向载荷能力和有限元预测

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Shape memory alloys (SMAs) are attractive as actuators due to their large energy density.rnAdditionally, SMA actuators can operate either in the low temperature phase, as a shape memoryrnalloy; or in the high temperature phase, as a superelastic alloy. In this work, load capacity at midspanrnof a nitinol beam has been studied in both the shape memory and superelastic regimes. Arnsample of nitinol was heat-treated (shape set) and force-displacement hystereses were recorded atrndifferent temperatures. Unified Model (developed by the Lagoudas group) predictions of thernexperimental response were compared and a good agreement observed. Geometric perturbationsrnwere then applied to the simulations to determine the characteristics of manipulation. To thisrnend, this work can be used to develop a nitinol actuator based on the desired force andrntemperature. Future work includes developing a control strategy for force and position in arnsensor-less fashion.

机译：形状记忆合金（SMA）由于具有较高的能量密度而作为致动器具有吸引力。rn此外，SMA致动器既可以在低温阶段运行，又可以用作形状记忆合金。或处于高温状态，作为超弹性合金。在这项工作中，在形状记忆和超弹性状态下都研究了镍钛诺梁中跨梁的承载能力。对镍钛诺的Arnsample进行热处理（定型），并在不同温度下记录力位移滞后现象。比较了Lagoudas组开发的统一模型对实验响应的预测，并观察到了很好的一致性。然后将几何扰动应用于模拟以确定操纵特性。为此，该工作可用于基于期望的力和温度来开发镍钛诺致动器。未来的工作包括以无传感器的方式开发用于力和位置的控制策略。

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来源
《Materials science amp; technology 2011 conference amp; exhibition》|2011年|890-901|共12页
会议地点 Columbus OH(US)
作者
W. Anderson; A. Eshghinejad; M. Elahinia;
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作者单位

University of Toledo, Toledo, Ohio, USA;

University of Toledo, Toledo, Ohio, USA;

University of Toledo, Toledo, Ohio, USA;

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会议组织
原文格式 PDF
正文语种 eng
中图分类
关键词
Nitinol; SMA; Bending; Transverse; Mid-span;

机译：镍钛诺;; SMA ;;弯曲;;横向;;中跨;

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Transverse Load Capacity at Mid-Span of Heat-Treated Nitinol and Finite Element Predictions

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