CAJ | 학술논문

运载火箭的整流罩横向解锁面一般采用爆炸螺栓连接,目前针对爆炸螺栓强度计算采用的是经验算法,由于没有考虑局部变形效应往往偏于冒进.采用有限元方法对爆炸螺栓的局部变形进行详细的仿真,揭示了爆炸螺栓结构的局部变形机理,并提出一种计算爆炸螺栓承载能力的方法,通过与有限元计算结果的对比,修正后的方法能够大幅提高爆炸螺栓承载力的计算精度.
운재화전적정류조횡향해쇄면일반채용폭작라전련접,목전침대폭작라전강도계산채용적시경험산법,유우몰유고필국부변형효응왕왕편우모진.채용유한원방법대폭작라전적국부변형진행상세적방진,게시료폭작라전결구적국부변형궤리,병제출일충계산폭작라전승재능력적방법,통과여유한원계산결과적대비,수정후적방법능구대폭제고폭작라전승재력적계산정도.
The transverse unlocking plane of fairing in launch vehicle is usually connected by explosive bolts. The empirical formula used for calculating explosive bolt strength is rash without considering local deformation effect. In this paper, finite-element method was adopted to stimulate the local deformation of explosive bolt which disclosed the mechanism of local deformation of explosive bolt. A method for calculating explosive bolt load-bearing capacity was proposed. By comparing with finite-element calculation results, the revised method can enhance the calculating precision of explosive bolt load-bearing capacity significantly.