JF系列某型电连接器组件端子可靠性研究

深入研究和分析了JF系列某型电连接器的组件端子在随机振动应力作用下的接触失效情况,由组件端子的失效机理及其运动状态构建出理论力学模型,考虑理论模型分析及实际失效情况,提出组件端子在随机振动作用下的可靠性增长方法。构建JF系列某型电连接器的组件端子插拔力的数学模型并对插拔力进行了分析,确定了插拔力的变化趋势及各因素之间的关系。参照相关手册确定了组件端子插拔力的取值范围,得出在取值范围内振动应力作用下组件端子接触失效随插拔力的增加而降低的结论。建立JF系列某型电连接器单针孔接触对的有限元仿真模型,并利用此模型模拟了电连接器接触件的插合与分开过程,得到接触面最大和最小插拔力时的应力和应变分布图以及随时间变化图。

Reliability Study on Terminal Contact Parts of Electrical Connector of JF Series

This paper studies the terminal contact failure of JF-series electric connector under random vibration stress, and presents the relative motion state and mechanical model from the failure mechanisms of terminal contact parts. A reliability growth program for electrical connector under random vibration stress is then proposed based on theoretical model analysis and actual failures the mathematical model of insertion and extraction force of terminal parts of JF Series electrical connector is established and analyzed, to determine in the relationship between the variation tendencies of insertion and extraction force and other factors. The conclusion that the data range of the terminal component insertion and extraction force is determined with reference to the relevant manuals where contact failure reduces as the insertion and extraction force increase within the data range is reached. Good correlation between the simulation results and those predicted from the theory models were obtained by establishing simulation experiment on the separation process of electric connector contact pair. The finite element simulation model of single pin and sock contact pair is developed, to simulate the dynamic behavior of the contacts, and to obtain the figure of the stress and strain distribution and variation with time for contacts at the time of the maximum and minimum insertion force.