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首页> 外文期刊>Smart Materials & Structures >A constrained maximization formulation to analyze deformation of fiber reinforced elastomeric actuators
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A constrained maximization formulation to analyze deformation of fiber reinforced elastomeric actuators

机译：一种限制的最大化制剂，分析纤维增强弹性致动器的变形

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摘要

Fiber reinforced elastomeric enclosures (FREEs) are soft and smart pneumatic actuators that deform in a predetermined fashion upon inflation. This paper analyzes the deformation behavior of FREEs by formulating a simple calculus of variations problem that involves constrained maximization of the enclosed volume. The model accurately captures the deformed shape for FREEs with any general fiber angle orientation, and its relation with actuation pressure, material properties and applied load. First, the accuracy of the model is verified with existing literature and experiments for the popular McKibben pneumatic artificial muscle actuator with two equal and opposite families of helically wrapped fibers. Then, the model is used to predict and experimentally validate the deformation behavior of novel rotating-contracting FREEs, for which no prior literature exist. The generality of the model enables conceptualization of novel FREEs whose fiber orientations vary arbitrarily along the geometry. Furthermore, the model is deemed to be useful in the design synthesis of fiber reinforced elastomeric actuators for general axisymmetric desired motion and output force requirement.
机译：纤维增强弹性机箱（易碎）是柔软的和智能气动致动器，其在通胀时以预定的方式变形。本文通过制定简单的变化问题来分析释放的变形行为，涉及涉及封闭体积的约束最大化的变化问题。该模型精确地将变形的形状与任何一般光纤角度取向的释放，及其与致动压力，材料特性和施加负荷的关系。首先，验证模型的准确性，具有现有的麦克宾充气人工肌动致动器的现有文献和实验，具有两个相等且相对的螺旋包裹纤维的家族。然后，该模型用于预测和实验验证新型旋转收缩释放的变形行为，其不存在现有的文献。该模型的一般性使得新颖的释放的概念化能够沿着几何形状任意地随意地变化。此外，该模型被认为是用于纤维增强弹性致动器的设计合成，用于一般轴对称期望的运动和输出力要求。

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