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Finite bending of a temperature-sensitive hydrogel tri-layer: An analytical and finite element analysis

机译：热敏水凝胶三层的有限弯曲：分析和有限元分析

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摘要

Layered hydrogel structures have been utilized to design sensors, actuators, and switches for various applications. In this article, we introduce a new design concept of a tri-layer composed of a positive and a negative temperature-responsive hydrogels layers attached to an elastomeric layer. This structure is capable of bi-directional bending while maintaining high strength and stiffness. Then, swelling induced finite bending of the tri-layer is studied both analytically and numerically (finite element method). The analytical method developed in this work is a novel method which is in a very good agreement with the finite element method results both for the deformation and the stress fields. Finally, several parametric studies are conducted to investigate various material and geometrical parameters effects on the deformation and the stress fields. The obtained results can be used in the tri-layer design and applications. (C) 2016 Elsevier Ltd. All rights reserved.
机译：分层的水凝胶结构已经被用于设计用于各种应用的传感器，致动器和开关。在本文中，我们介绍了三层的新设计概念，该三层由连接到弹性体层的正温度响应性水凝胶层和负温度响应性水凝胶层组成。这种结构能够双向弯曲，同时保持较高的强度和刚度。然后，对溶胀引起的三层有限弯曲进行了分析和数值研究（有限元方法）。这项工作中开发的分析方法是一种新颖的方法，与变形和应力场的有限元方法结果非常吻合。最后，进行了几项参数研究，以研究各种材料和几何参数对变形和应力场的影响。所得结果可用于三层设计和应用。 （C）2016 Elsevier Ltd.保留所有权利。

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