摘要
讨论了炭纤维壳体封头低压破坏的原因及3种破坏模式,即靠近赤道附近部位的封头发生断裂,极孔部位在环向应力作用下断裂和封头沿接头肩部外缘被剪(弯)断;得到了3种破坏模式的强度校核公式。给出了防止封头破坏宜采取的有效措施,对开孔很大的后封头,宜采取补强措施;给出了补强层厚度和补强范围的确定方法。
The cause of the carbon fiber case dome failure at low pressure and the failure modes were discussed, i. e. dome fracture in the vicinity of equator, polar hole fracture due to hoop stress and dome shear fracture on the shoulder edge of flange. The strength check formulae for the three modes and effective measures to prevent low pressure failure of the dome were abtained. For the aft dome with larger open polar, reinforcement measures must be taken. The methods determining the thickness and the range of reinforcement layer were given.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2009年第5期543-547,共5页
Journal of Solid Rocket Technology
关键词
炭纤维
封头强度
应力平衡系数
封头补强
carbon fiber
dome strength
stress equilibrium factor
dome compensation strength
