电磁冲击波发生器箔片多物理场设计优化

为实现高功率电磁冲击波发生器箔片的优化设计,利用多物理场仿真工具COMSOL Multiphysics 对箔片建模并进行仿真和优化。相较于高阶本征频率,箔片在一阶本征频率下振动时具有更大的振幅;提出了箔片形变收益最大点的概念,据此可分析箔片在不同激励下的转换效率并用于确定激励电路参数以实现高效输出;其后对3种不同结构的箔片的性能在仿真分析的基础上进行了比较讨论,得到了波纹结构箔片在同等激励下具有更大振幅的结论。论文工作对高效高功率电磁冲击波发生器的研制具有一定参考价值。

Multi-Physics Filed Simulation and Optimization for the Membrane of Electromagnetic Acoustic Shock Wave Generator

The model of the membrane established with the multi-physical field simulation tool is simulated and optimized to achieve the optimal design of the membrane of electromagnetic acoustic shock wave generator. A greater amplitude of the membrane is obtained by operating in the fundamental frequency when compared to the higher eigen frequencies. A concept of the maximum deformation point is proposed and used in analyzing the conversion efficiency under different excitation and determining the parameters of the excitation circuit in order to get efficient output;and then the performances of three type of membrane are compared and discussed based on the simulation results, the conclusion is obtained that the corrugated membrane has a larger amplitude under the same excitation. The work of this paper has certain reference value for the development of high efficiency and high power electromagnetic acoustic shock wave generator.