钢球式解锁螺栓分离装置的强度计算

基于失效分析方法,文章确定了某钢球式火工分离装置各组成部件的强度最薄弱环节,并针对这些环节进行了受力分析与最大承载力计算,通过计算得到了外筒壁厚与钢球直径的尺寸设计是影响分离装置总体载荷强度的关键。同时,对火工分离装置进行了分离能力与承载力的试验,结果表明文章提出的强度计算能准确估算出分离装置最大承载力,为类似航天器火工装置的尺寸设计以及小型化设计提供了理论参考依据。

Strength Calculation of Steel Ball-Type Pyrotechnic Separation Device

Based on FMEA（Failure Mode and Effect Analysis）,this paper made sure which part in every component of Steel Ball-type pyrotechnic separation device was the weakest strength structure,and especially,the force analysis and maximum connection strength of those segments were calculated,the calculation results show that the thickness of outer cylinder and the diameter of steel ball were the key parts which affect the critical load of the pyrotechnic separation device.Meanwhile,the separation parameters and critical load of the separation device were tested,the results show that the theory strength calculation of the weakest strength structure could accurately estimate the maximum critical load,it provided theoretical basis for the miniaturization design of similar pyrotechnic devices.