铂型离子聚合物金属复合材料传感特性

发布时间：2018-02-24 11:28

本文关键词： 复合材料传感模型离子聚合物金属复合材料不可逆热力学大挠度　出处：《机械设计与制造》2017年01期 　论文类型：期刊论文

【摘要】：基于不可逆热力学和薄板大挠度理论建立了大挠度状态下的IPMC的传感模型。即以不可逆热力学理论为基础,描述了IPMC的离子输运内在机理,以及离子运动与电场及浓度差之间的关系,并考察了IPMC内部的离子运动形式,建立电场与内部压力差之间的关系;同时通过分析受外载荷作用后发生大挠度情况下压力与挠度之间的关系,建立IPMC在大挠度时曲率与两金属膜之间形成的电势差之间的关系,即给出了大挠度状态下IPMC的传感性能模型,并分析了IPMC输出电压的影响因素。将模型仿真值与实验结果进行对比,误差在25%以内,说明建立的传感模型能够较好的预测大挠度状态下IPMC受载后的输出电压。研究结果也表明环境因素对IPMC传感性能的影响很大,在一定程度上限制了其应用范围。
[Abstract]:Based on the theory of irreversible thermodynamics and large deflection of thin plate, the sensing model of IPMC in large deflection state is established. Based on the theory of irreversible thermodynamics, the intrinsic mechanism of ion transport in IPMC is described. The relationship between ion movement and the difference of electric field and concentration is also discussed. The relationship between electric field and internal pressure difference is established by investigating the form of ion movement in IPMC. At the same time, the relationship between the curvature of IPMC and the electric potential difference between the two metal films is established by analyzing the relationship between the pressure and the deflection under the condition of large deflection after the external load, and the relationship between the curvature and the potential difference between the two metal films is established under the condition of large deflection. In this paper, the sensing performance model of IPMC under the condition of large deflection is given, and the factors influencing the output voltage of IPMC are analyzed. Compared with the experimental results, the error of the model is less than 25%. The results show that the sensor model can predict the output voltage of IPMC under large deflection. The results also show that the environmental factors have a great influence on the sensing performance of IPMC, which limits its application to a certain extent.
【作者单位】：南京航空航天大学机械结构力学及控制国家重点实验室;南京工业大学数理学院;南京理工大学发射动力学研究所;
【基金】：国家自然科学基金资助项目(11372132)
【分类号】：TB333

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