基于有限元的平压装置分析及优化

Analysis and optimization of platen device based on finite element method

为满足燃料电池膜电极等柔性电子器件的生产工况,对一种精密平压装置进行了建模和有限元分析,提出了优化模型。首先,对装置模型进行静力学分析,根据变形和应力分布情况,提出零/部件形状和尺寸优化的目标。其次,通过对部分组件的形状优化分析,获知其形状的优化趋势。再次,对装置模型进行模态分析,结果表明,装置的1阶固有频率较低,确定了对装置模态影响较大的组件。最后,设计了一种整体结构的优化方案,该方案在满足燃料电池膜电极生产工况要求的同时,使平压装置减重达10%,1阶固有频率提高约9%。

Based on the requirements of the operation condition of fuel cell membrane electrode assembly, a precise platen device is designed and finite-element analyzed, and the optimized model is proposed. The statics analysis of the model is computed and the stress and deformation distribution of the whole platen device is obtained. The results show the potential for lightweight design through structure configuration modification and optimization. A shape optimization analysis is conducted to find the way to opti- mize the shape of the components. Data of the modal analysis demonstrate that the fundamental frequency of the platen device is lower. Finally, the lightweight scheme is proposed and implemented, and results show that the optimized platen device not only meets the demand of the Membrane Electrode Assembly （MEA） producing process, but also makes the weight reduce by 10% and the fundamental frequency increase by 9%.