钛合金载人舱球壳试验压力和应力衡准取值研究

Parameter research of test pressure and stress criterion for the titanium-alloy manned pressure hulls

各国潜水器规范对潜水器载人舱球壳试验压力的规定各有不同,以球壳的中面膜应力作为计算对象,推算各规范和标准关于膜应力在试验压力下的应力衡准。结合“蛟龙号”和“深海勇士号”两型潜水器载人舱球壳的外压试验,对计算应力和实测应力数据分析对比,提出适合钛合金载人舱球壳的试验压力和应力衡准参考值。

The specifications of the test pressure parameters for the external pressure hull are different in some submersible rules. In this article ,the membrane stress of the spherical hull is taken as the object of calculation, and the stress criterion of the membrane stress under the test pressure is calculated according to the rules and standards. After the external pressure test of the manned hulls of the “JIAOLONG” and “Deepsea Warrior”, the parameters of the external pressure test and the stress criterion for the titanium-alloy manned pressure hulls are proposed based on the comparative analysis of the theoretical calculated stress and the measured stress.