摘要
对一种为高速导弹设计的楔块式火工分离机构的薄弱环节进行了受力分析与强度校核,基于失效分析方法得到内筒螺纹段是影响分离机构总体载荷强度的关键,其最大承载力为21.6kN;通过对该机构进行分离能力与承载力试验,得到其分离时间为1.2ms左右,平均最大承载力为21kN左右。试验表明理论强度校核方法能准确估算出机构的最大承载力,可为类似航天器火工装置的设计提供有益参考。
Based on FMEA（failure mode and effect analysis）, the force analysis and maximum connection strength of a wedge-type pyrotechnic separation device designed for high-speed missiles was calculated, which showed that the screw thread of inner cylinder was the key part and the critical load of separation device was about 21.6kN.Meanwhile, the separation parameters and critical load of the separation device were tested, it was obtained that the separation time was about 1.2ms, maximum load capacity was about 2 lkN. The results showed that theory strength calculation of weakest strength structure can accurately estimate maximum critical load of separation device, and it can provide theoretical basis for similar pyrotechnic devices.
出处
《火工品》
CAS
CSCD
北大核心
2010年第5期1-4,共4页
Initiators & Pyrotechnics
关键词
分离机构
楔块式
强度校核
失效分析
承载力
Separation device
Wedge-type
Strength calculation
Failure analysis
Load capacity
