文献类型：期刊文献

中文题名：碳纤维缠绕储氢瓶的有限元自紧分析和爆破压力预测

英文题名：Autofrettage Analysis and Prediction of Burst Pressure of Carbon Fiber-winding Hydrogen Storage Vessels by FEM

作者：张广哲[1];王和慧[1];关凯书[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2011

卷号：28

期号：8

起止页码：27

中文期刊名：压力容器

外文期刊名：Pressure Vessel Technology

收录：CSTPCD;;北大核心:【北大核心2008】；

语种：中文

中文关键词：储氢瓶;自紧;复合材料;渐进失效;有限元分析

外文关键词：hydrogen storage vessels; autofrettage; composite materials; progressive failure; FEA

摘要：根据高压储氢瓶的金属内胆和外部碳纤维缠绕层的结构特点进行各向同性金属和各向异性复合材料叠层的有限元建模。考虑自紧作用与气瓶的实际工况,对气瓶在不同内压下应力和变形的弹塑性响应进行了分析。参考DOT CFFC标准对气瓶进行了自紧设计和弹塑性加卸压模拟分析。基于渐进破坏理论,用Tsai-Wu失效准则判断复合材料失效模式,并据此修改单元刚度;利用单元生死技术,依据失效单元数目的急剧增大来预测气瓶的爆破压力,与文献试验结果相比误差很小,验证了该方法的可靠性。
The finite element model embedded isotropy metal and anisotropy composite material is established according to the structure characteristics of the high pressure hydrogen storage vessel with metal liner and carbon fiber-winding layers.Static elasto-plastic stress and deformation simulations are carried out under various pressure loads,with considering the effect of autofrettage and working conditions and also referring DOT CFFC standard.Based on the progressive failure theory,Tsai-Wu failure criteria was employed to determine the failure properties of composite vessels,according to which the stiffness of relevant elements is modified.The birth-to-death element technique in the finite element analysis is used to describe the mechanical properties of carbon fiber composite elements.The burst pressure of the vessel predicted in terms of the rapid increasing of the number of failure elements with increasing internal pressure is in good agreement with the experimental results,which proved the acceracy of the proposed approach.