Simulation and Experiment Research on Fatigue Life of High Pressure Air Pipeline Joint

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Shang, Jin^1 ; Xie, Jianghui^1 ; Yu, Jian^1 ; Zhang, Deman^1

Wuhan Second Ship Design and Research Institute, Wuhan

430064, China^1

关键词: Experiment research;    High pressure air;    High pressure air system;    Maximum stress;    Pipeline joints;    Research teams;    Safety and stabilities;    Tightening torque;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012046/pdf
DOI  :  10.1088/1757-899X/274/1/012046

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

High pressure air pipeline joint is important part of high pressure air system, whose reliability is related to the safety and stability of the system. This thesis developed a new type-high pressure air pipeline joint, carried out dynamics research on CB316-1995 and new type-high pressure air pipeline joint with finite element method, deeply analysed the join forms of different design schemes and effect of materials on stress, tightening torque and fatigue life of joint. Research team set up vibration/pulse test bench, carried out joint fatigue life contrast test. The result shows: The maximum stress of the joint is inverted in the inner side of the outer sleeve nut, which is consistent with the failure mode of the crack on the outer sleeve nut in practice. Simulation and experiment of fatigue life and tightening torque of new type-high pressure air pipeline joint are better than CB316-1995 joint.