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建立一套设计压力为 5MPa、开孔率di/Di 为 0 6、内伸接管长度为 2 0mm的半球形封头大开孔内伸接管实验装置 ,利用电测法在压力为 3 0MPa ,3 5MPa ,4 0MPa等多组实验压力下 ,对封头与内伸接管的连接区进行了实验应力分析。结果表明 ,最大应力为封头与接管连接区外壁的环向拉应力
A set of design pressure of 5MPa, the opening rate of di / Di is 0 6, the extension of the tube length 20mm hemispherical head large opening within the extension tube experimental device, the use of electrical measurements at a pressure of 3 0MPa, 3 5MPa, 40MPa and other groups of experimental pressure, the head and the extension of the connecting area of the pipe was subjected to experimental stress analysis. The results show that the maximum stress is the circumferential tensile stress between the head and the outer wall of the connecting area