"Electronic electro-active polymers under electric loading: Experiment, modeling and simulation"

“电负载下的电子电活性聚合物：实验、建模和模拟”

• 批准号: 68543691
• 负责人: Professor Dr.-Ing. Paul Steinmann
• 金额: --
• 依托单位: Lehrstuhl für Technische Mechanik (LTM)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/68543691?language=en
• 关键词: Electronic; electro; active; polymers; under

The mechanical response of electronic electro-active polymers (EEAP) under electric loading is influenced both by mechanical and electric properties of the material. Understanding the behavior of EEAP is vital in the development and design of EEAP based actuators and artifical muscles. Despite the fact that applications of EEAP are very promising, until now only a handful of experimental works have been realized to characterize their material properties. Moreover, so far only one-sided coupled models were used to explain experimental data and there exist discrepancies between meausrement, modeling and simulation. In this proposal, first experimental work will be performed to determine the material characteristics of a typical EEAP material then the electro-mechanical coupling phenomenon exhibited by EEAP will be modeled within the frameof hyperelasticity and viscoelasticity. Finally, by using a variational approach, a formulation representing the fully coupled problem will be derived, discretized, linearized and solved by the Finite Element Method in order to simulate the behavior of EEAP. Benchmark simulations will be performed to validate the applicability of the coupled model. Efforts will also be directed to the study of defects of EEAP by the Material Force Method and with the help of some recent developments in the spatial and material setting of nonlinear electro-elasticity. Especially the Material Force Method will be applied in numerical studies of cracked structures made of EEAP.

电子型电活性聚合物（EEAP）在电载荷作用下的力学响应受材料力学和电学性质的共同影响。了解EEAP的行为对基于EEAP的驱动器和人工肌肉的开发和设计至关重要。尽管事实上，EEAP的应用是非常有前途的，到目前为止，只有少数实验工作已经实现，以表征其材料性能。此外，目前仅采用单边耦合模型来解释实验数据，测量、建模和仿真之间存在差异。在这个建议中，首先将进行实验工作，以确定一个典型的EEAP材料的材料特性，然后EEAP所表现出的机电耦合现象将在超弹性和粘弹性的框架内建模。最后，通过使用变分方法，代表完全耦合的问题的配方将推导，离散化，线性化和有限元法求解，以模拟EEAP的行为。 将进行基准模拟，以验证耦合模型的适用性。努力也将针对EEAP的缺陷的物质力方法的研究，并在非线性电弹性的空间和材料设置的一些最新发展的帮助下。特别是材料力法将被应用于含裂纹的EEAP结构的数值研究中。