Modeling of fiber-reinforced polymeric gels
Modeling of fiber-reinforced polymeric gels
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DOI：
10.1016/j.mechrescom.2019.02.002
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发表时间：
2019-03
影响因子：
2.4
通讯作者：
Nikola Bosnjak;Shuolun Wang;Daehoon Han;Howon Lee;Shawn A. Chester
中科院分区：
文献类型：
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作者：
Nikola Bosnjak;Shuolun Wang;Daehoon Han;Howon Lee;Shawn A. Chester
当聚合物网络暴露于合适的溶剂时，溶剂分子迁移到网络中将引起体积变形，称为溶胀，但更重要的是形成称为聚合物凝胶的混合物。尽管有许多潜在的应用，在聚合物凝胶中的耦合扩散-变形行为的许多方面还没有得到彻底的研究。在这里，我们把注意力集中在纤维增强聚合物凝胶的耦合变形扩散响应。在可溶胀的聚合物基质中嵌入纤维的存在导致整体行为的各向异性。为了捕捉这种响应，我们已经开发了一个本构模型的纤维增强聚合物凝胶，明确考虑到各向异性的机械和扩散行为。本构模型在商业有限元软件包Abaqus/Standard中作为用户单元子程序（UEL）实现。数值模拟显示的行为模型，并定性比较的实验软机器人手爪。
When a polymer network is exposed to a suitable solvent, the migration of solvent molecules into the network will cause volumetric deformation, known as swelling, but more importantly forms a mixture that is known as a polymeric gel. Despite numerous potential applications, many aspects of the coupled diffusion-deformation behavior in polymeric gels have not yet been thoroughly investigated. Here, we focus our attention on the coupled deformation-diffusion response of fiber-reinforced polymeric gels. The presence of embedded fibers in a swellable polymer matrix leads to anisotropy in the overall behavior. In order to capture this response, we have developed a constitutive model for fiber-reinforced polymeric gels, that explicitly takes into account anisotropy in both the mechanical and diffusive behavior. The constitutive model is implemented as user element subroutine (UEL) in the commercial finite element software package Abaqus/Standard. Numerical simulations are performed to show the behavior of the model, and qualitative comparisons are made to experiments of a soft robotic gripper.