|
|
| |
| 考虑形变的Ⅳ型储氢瓶含初始缺陷内胆坍塌分析 |
| Analysis of Collapse of liner with Initial Defects in Type IV Hydrogen Storage Cylinder Considering Deformation |
| 投稿时间：2024-10-20 修订日期：2025-01-02 |
| DOI： |
| 中文关键词: Ⅳ型储氢气瓶 塑料内胆 坍塌失稳 有限元分析 |
| 英文关键词:Type IV hydrogen tank Plastic liner Collapse instability Finite element analysis |
| 基金项目:国家自然科学基金（12372119，12302146）;资助项目；中国博士后科学基金（2022T150086） |
|
| 摘要点击次数: 8 |
| 全文下载次数: 0 |
| 中文摘要: |
| 本文建立了Ⅳ型储氢瓶含初始缺陷塑料内胆筒身段坍塌失稳的有限元模型，考虑了Ⅳ型储氢瓶快速减压过程中内胆变形对塑料内胆所受内外压差的影响，对含初始缺陷的塑料内胆在快速减压时的坍塌失稳情况进行了有限元分析。在此基础上，探究了初始压力、气瓶排气速率、最终压力等关键因素对内胆坍塌临界压力及坍塌程度的影响。结果表明，相同排气速率下，瓶内初始压力越大，内胆坍塌临界压力越大；随着排气速率不断增加，内胆坍塌临界压力的增加量不断减小，当排气速率超过某个临界值时，内胆坍塌压力的大小与排气速率无关；最终压力越大，内胆的变形程度越小，内胆越不易坍塌。 |
| 英文摘要: |
| This paper establishes a finite element model of collapsing instability of the liner of Type IV hydrogen storage cylinder with initial defects, mainly considering the influence of liner deformation on the internal and external pressure difference of the plastic liner during the rapid pressure reduction process of the cylinder. The finite element analysis of collapse instability of the plastic liner with initial defects under rapid pressure reduction is carried out. Based on this, the effects of key factors such as initial pressure, the emptying flow rate, and final pressure on the collapse critical pressure and collapse degree of the liner are explored. The results show that the larger the initial pressure in the cylinder, the larger the collapse critical pressure of the liner; with the increasing of the emptying flow rate, the increase of the critical pressure of the tank collapse decreases, and when the emptying flow rate exceeds a specific critical value, it will hardly affect the collapse pressure of the liner; the smaller the final pressure, the smaller the deformation degree of the liner, and the less likely it is to collapse. |
| 查看/发表评论 下载PDF阅读器 |
