复合材料气瓶有限元分析与爆破压力预测  

Finite element analyses and bursting pressure prediction for COPV

作　　者：常新龙[1] 张晓军[1] 刘新国[1] 简斌[1] 

机构地区：[1]第二炮兵工程学院,陕西西安710025

出　　处：《火箭推进》2008年第4期27-31,共5页Journal of Rocket Propulsion

摘　　要：利用ANSYS大型有限元程序建立了复合材料气瓶的有限元模型,建模中将纤维缠绕层作为复合材料层合板处理,考虑了封头处缠绕层厚度及缠绕角沿子午线不断变化的情况。针对建立的模型进行了气瓶在几个工况点下的变形分析,利用最大应变准则预测了气瓶的爆破压力。通过分析结果与相应试验结果对比,验证了建模与分析方法的正确性。A finite element model of composite overwrapped pressure vessels （COPV） is established by ANSYS finite element software. In the modeling process, the number of filament winding layers is treated as composite laminates with thickness and wrap angle variations of every unidirectional layer in the domes section considered. Using this model, static deformation analyses are conducted at several operating modes. Based on the maximum strain criteria, burst pressure of the vessel is predicted. The analyses results are compared with the test ones. The method of COPV modeling and analyzing are validated.

关 键 词：复合材料气瓶 有限元建模 应力应变分析 

分 类 号：V414.8[航空宇航科学与技术—航空宇航推进理论与工程]