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| Analysis of collapse of liner with initial defects in type Ⅳ hydrogen storage cylinder considering deformation |
| Received:October 20, 2024 Revised:January 02, 2025 |
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| DOI：10.7511/jslx20241020001 |
| KeyWord:type Ⅳ hydrogen tank plastic liner collapse instability finite element analysis |
| Author | Institution |
| 娄雪莹 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE全国重点实验室, 大连 |
| 王奕元 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE全国重点实验室, 大连 |
| 郭宇鸿 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE全国重点实验室, 大连 |
| 谢艳芝 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE全国重点实验室, 大连 |
| 李刚 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE全国重点实验室, 大连 |
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| Abstract: |
| This paper establishes a finite element model of collapse instability of the liner of a 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 increase 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. |
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