外压作用下深海腐蚀缺陷管道的屈曲失稳机理

龚顺风,徐勤贵,周家伟,王喜鹏,刘承斌

Buckle and collapse mechanisms of deep-sea corrosion defect pipes under external pressure

Shun-feng GONG,Qin-gui XU,Jia-wei ZHOU,Xi-peng WANG,Cheng-bin LIU

表 1 试件腐蚀缺陷几何尺寸

Tab.1 Geometric sizes of test specimen corrosion defects

试件编号 l/mm c/(°) d/mm TD1 89 18 1.35 TD2 89 18 1.8 TD3 89 18 2.25 TD4 89 18 2.7 TD5 89 18 3.15 TD6 44.5 18 2.7 TD7 133.5 18 2.7 TD8 178 18 2.7 TD9 89 9 2.7 TD10 89 27 2.7 TD11 89 36 2.7