Ⅳ复合高压储氢瓶参数化有限元分析

Parametric Finite Element Analysis of Type Ⅳ Composite High-pressure Hydrogen Storage Tank

IV型复合高压储氢瓶是当前车载储氢应用的主要研究目标,建立了IV型复合高压氢瓶的参数化建模方法.其次,通过有限元模型进行静态力学分析,得到不同材料不同部位的应力分布结果,在工作压力下最大的等效应力分布位于圆筒和瓶底部之间的过渡部分.研究了碳纤维缠绕角度,缠绕方法和碳纤维弹性模量对碳纤维缠绕层的影响,这三个因素中最重要的是碳纤维层的缠绕顺序,其次是碳纤维的弹性模量和缠绕角度.

The Type Ⅳ composite hydrogen storage tank is the main research target of current on-board hydrogen storage application. A parametric modeling method for Type Ⅳ composite high-pressure hydrogen tank is established in this paper. Then, the static mechanical analysis is made by means of the finite element model to obtain the distribution results of stress in different parts of different materials. The largest equivalent stress distribution under working pressure is located in the transition section between the cylinder and the bottom of the bottle. Then we investigate the effects of carbon fiber winding angle,winding method and carbon fiber elastic modulus on the carbon fiber wound layer. The most;important of these three factors is the winding order of the carbon fiber layer,followed by the carbon fiber elastic modulus and the winding angle.