高温环境下电连接器内部温度有限元仿真分析及试验

Finite Element Simulation Analyses and Tests on Internal Temperatures of Electrical Connectors under High Temperatures

针对电连接器内部温度难以准确测量的问题,以Y2型宇航分离脱落电连接器为研究对象,完成了电连接器内部温度测试方法的仿真研究、试验设计及相关影响因素分析。利用SolidWorks软件建立电连接器的三维模型,基于ANSYS对电连接器模型进行热电耦合仿真分析,得到了电连接器在不同环境温度下的内部温升及温度分布规律。设计电连接器内部温度测试系统,完成电连接器内部温度测试以及与仿真结果的对比验证。基于此仿真方法,研究芯数、工作电流及接触电阻对电连接器温度变化的影响,发现电连接器内部最高温度均随这三个影响因素的增大而增大。

Simulation, experimental design and influential factors analysis were carried out, in view of the difficulties to measure the internal temperatures of the electrical connectors and the inaccurate measurement results, taking Y2 type electrical connectors as the research objects. Three-dimensional model was conducted by SolidWorks, thermal-electric coupling finite elements simulation was implemented by ANSYS, and then temperature rise and temperature field distribution were analyzed under different environmental temperatures. A set of internal temperature test systems was designed, actual internal temperatures of electrical connectors were measured and the experimental data show a good agreement with simulation results. The influences of number of cores, current and contact resistance on internal temperatures of electrical connectors were simulated, and the results show that the maximum temperatures increase with the increases of the three factors.