烟火点火器多物理场耦合仿真分析

电火工品在复杂电磁环境下的物理状态变化一般都包含了电磁 -热耦合过程,采用单一物理场建模仿真的方法很难得到准确的结果。因此,采用 ANSYS Workbench仿真平台,建立了烟火点火器的多物理场耦合仿真分析模型。首先,建立了烟火点火器的 HFSS仿真模型,得到了桥丝上的功率损耗；然后,将桥丝的损耗功率输入稳态热分析模型作为激励条件,并通过稳态热仿真分析得到了桥丝上的温度分布。仿真结果表明,该方法物理过程清晰,仿真结果准确可靠。

Simulation and Analysis of Multi-Physics Coupling for Ignition Device

The physical state change of electro-explosive device (EED) in a complex electromagnetic environment usuallyincludes electromagnetic-thermal coupling process. The accurate result can hardly be obtained by the simulation of simplephysical field. So, the coupling model of multi-physics for ignition device was built up in ANSYS Workbench simulationplatform. First, the HFSS simulation model of ignition device was built up to obtain the power loss of the bridgewire. Then,the power loss was input to the steady-state thermal model as excitation, and the temperature distribution was got bysteady-state thermal simulation analysis. The simulation result show that this method has clear physical process, and thesimulation results are accurate and reliable.