固体火箭技术
固體火箭技術
고체화전기술
JOURNAL OF SOLID ROCKET TECHNOLOGY
2009年
5期
543-547
,共5页
炭纤维%封头强度%应力平衡系数%封头补强
炭纖維%封頭彊度%應力平衡繫數%封頭補彊
탄섬유%봉두강도%응력평형계수%봉두보강
carbon fiber%dome strength%stress equilibrium factor%dome compensation strength
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.
討論瞭炭纖維殼體封頭低壓破壞的原因及3種破壞模式,即靠近赤道附近部位的封頭髮生斷裂,極孔部位在環嚮應力作用下斷裂和封頭沿接頭肩部外緣被剪(彎)斷;得到瞭3種破壞模式的彊度校覈公式.給齣瞭防止封頭破壞宜採取的有效措施,對開孔很大的後封頭,宜採取補彊措施;給齣瞭補彊層厚度和補彊範圍的確定方法.
토론료탄섬유각체봉두저압파배적원인급3충파배모식,즉고근적도부근부위적봉두발생단렬,겁공부위재배향응력작용하단렬화봉두연접두견부외연피전(만)단;득도료3충파배모식적강도교핵공식.급출료방지봉두파배의채취적유효조시,대개공흔대적후봉두,의채취보강조시;급출료보강층후도화보강범위적학정방법.
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.
