缠绕层表面2mm深椭圆损伤对CNG-Ⅱ复合气瓶应力的影响  

Influence of Winding Layer with Elliptic Pit Damage in 2 mm Depth on the Stress of CNG-Ⅱ Composite Cylinder

作　　者：张爽[1] 由宏新[1] 高国栋[2] 李斌 管亚军[1] 马凯[4] 

机构地区：[1]大连理工大学化工机械学院,辽宁大连116024 [2]中国石油天然气管道局国际事业部,河北廊坊065000 [3]国家压缩天然气气瓶质量监督检验中心,重庆401120 [4]新疆石油勘察设计研究院(有限公司),新疆克拉玛依834000

出　　处：《压力容器》2014年第10期34-41,共8页Pressure Vessel Technology

摘　　要：为了研究缠绕层外表面损伤对于CNG-Ⅱ复合气瓶安全性能的影响,通过考察实际气瓶表面损伤形状,将复合气瓶表面损伤简化为一定尺寸的椭圆形凹坑。对缠绕层表面带有2 mm深度椭圆形凹坑损伤的复合气瓶进行爆破试验,利用有限元软件ANSYS计算其爆破压力。比较试验爆破压力和数值分析结果,验证数值分析方法的正确性。在此基础上,对带椭圆形凹坑损伤的CNG-Ⅱ复合气瓶进行应力分析,得出缠绕层外表面椭圆形凹坑损伤对气瓶安全性能造成不良影响。To study the influence of surface damage of winding layer on the safety performance of CNG-Ⅱcomposite cylinders,the surface damage of composite cylinder was simplified as a elliptic pit on the ba-sis of investigating the shape of the surface damage of the cylinder.A composite cylinder with a elliptic pit damage（2 mm in depth） on the winding layer was used for burst testing,and the finite element software ANSYS was used to calculate its burst pressure.Through comparison of the burst pressure in the test and the numerical analysis result, the correctness of numerical analysis method was verified.On this basis, stress analysis was conducted for CNG-Ⅱcomposite cylinder with elliptic pit damage which could have negative effects on the safety performance of CNG-Ⅱcomposite cylinder.

关 键 词：CNG-Ⅱ复合气瓶 椭圆形凹坑损伤 有限元分析 应力分析 

分 类 号：TH49[机械工程—机械制造及自动化] O346.5[理学—固体力学]