CAJ | 학술논문

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。
위료연구전요층외표면손상대우CNG-Ⅱ복합기병안전성능적영향，통과고찰실제기병표면손상형상，장복합기병표면손상간화위일정척촌적타원형요갱。대전요층표면대유2 mm심도타원형요갱손상적복합기병진행폭파시험，이용유한원연건ANSYS계산기폭파압력。비교시험폭파압력화수치분석결과，험증수치분석방법적정학성。재차기출상，대대타원형요갱손상적CNG-Ⅱ복합기병진행응력분석，득출전요층외표면타원형요갱손상대기병안전성능조성불량영향。
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.