摘要
基于ANSYS软件建立了低温复合材料气瓶爆破压力分析的有限元模型,通过缠绕层纤维损伤情况及内衬应力、应变和位移变化情况分析,对所研制气瓶80 K温度下的爆破压力进行了预测。搭建了复合材料气瓶的低温爆破试验装置,开展了所研制气瓶液氮温区下的爆破试验。研究结果表明,所研制低温复合材料气瓶80 K温度下爆破压力的有限元计算值和试验值分别为78 MPa和71.28 MPa,误差为9.4%,说明了该低温复合材料气瓶爆破压力有限元分析方法的合理性。
Based on ANSYS software, a finite element model using for analyzing the bursting pressure ofcryogenic composite overwrapped pressure vessels（COPV） is established. The damage states of the over-wrapped fibrous layer were analyzed and the analysis were also included about the variation conditions ofthe stress, strain and displacement of the inner lining, which were used to forecast the bursting pressure ofthe developed cryogenic COPV under the ambient temperature of 80 K. A test apparatus applying for thecryogenic bursting experiment of the COPV was build, and the bursting experiment of the developed cryo-genic COPV was carried on under the temperature of liquid nitrogen. To the bursting pressure of the de-veloped cryogenic COPV under the ambient temperature of 80 K, the calculated value of finite elementand the experimental value are respectively 78 MPa and 71.28 MPa, and the error of the two values is9.4%. The research results indicate that the analysis method of finite element proposed by this paper isrational, and can be used to effectively study the bursting pressure of the cryogenic COPV.
出处
《压力容器》
2016年第3期39-44,共6页
Pressure Vessel Technology
关键词
低温
复合材料气瓶
有限元
爆破压力
cryogenic
composite overwrapped pressure vessels
finite element
bursting pressure
