水下插拔电连接器的结构热应力及动力学分析

Structural thermal stress and dynamic analysis of wet-mate electrical connectors

为保证水下插拔电连接器在深海高压与通电发热条件下工作的可靠性,建立连接器插头内壳体组件三维模型。采用Ansys Workbench软件对插头内壳体组件进行稳态热分析和结构热应力分析,研究在不同插针接触体温度条件下各组件的应力分布与变形规律;对主要部件进行模态分析,得到前6阶模态下固有频率及振型,讨论不同预应力和结构厚度对内壳体模态的影响。结果表明:随着插针接触体工作温度的升高,内壳体和压力平衡膜的等效应力与变形量逐渐减小,内壳体的等效应力逐渐增大但其变形量减小;在不同的海水深度下,预应力的变化对内壳体固有频率的影响较小;增大内壳体的厚度,固有频率显著增大。仿真结果可为水下插拔电连接器的结构设计与国产化制造提供理论指导,提高水下插拔电连接器的可靠性。

In order to ensure the reliability of the wet-mate electrical connector under the conditions of deep-sea high pressure and power-on heating,a three-dimensional model of the plug inner shell components was established.Steady-state thermal analysis and structural thermal stress analysis of the plug inner shell components were conducted by using the software Ansys Workbench.The stress distribution and deformation of each component under the different pin contact body temperature conditions were studied.Through the modal analysis of the main components,the natural frequency and mode shape of the first six modes were obtained,and the influence of different prestress and structure thickness on inner shell modal was discussed.The results showed that as the working temperature of the pin contact body increased,the equivalent stress and deformation of the inner shell and the pressure balance membrane gradually decreased.The equivalent stress of the inner shell gradually increased,but the deformation decreased instead.Under different sea depths,the change of prestress had little effect on the natural frequency of the inner shell.With the increase of the thickness of the inner shell,the natural frequency increased significantly.The simulation results could provide theoretical guidance for the structural design and localized manufacturing of wet-mate electrical connectors,and improve the reliability of wet-mate electrical connectors.