压力容器2025，Vol.42Issue(6)：1-8,8.DOI:10.3969/j.issn.1001-4837.2025.06.001
大容量Ⅳ型储氢气瓶过渡区域的分层失效行为研究
Investigation into the delamination of the transition in large-capacity type Ⅳ hydrogen storage cylinders
摘要
Abstract
This study focuses on the delamination failure of the transition region connecting the dome and cylindrical section of a large-capacity type Ⅳ hydrogen storage cylinder with an inner radius of 330 mm and design work pressure of 52 MPa.Based on multi-scale simulation and cohesive zone modeling for interfacial damage evolution,the intralaminar and interlaminar failure mechanisms of the composite layers in the transition region were analyzed,and the influence of delamination damage on structural strength was investigated.Parametric analysis was also conducted to propose potential methods for design and manufacturing optimization.The results indicate that the main causes of delamination failure in the transition region of a large-capacity type Ⅳ hydrogen storage cylinder are bending stress induced by geometrical discontinuity of the structure,abrupt changes in thickness and stiffness due to local winding design,and differences in interlaminar properties.The delamination initiates under a pressure load of 78 Mpa and the limited failure area is about h2.The research findings provide new insights for the strength prediction and design optimization of composite hydrogen storage cylinders.关键词
Ⅳ型储氢气瓶/大容量/复合材料/过渡区/分层失效Key words
type Ⅳ hydrogen storage cylinder/large-capacity/composite material/transition/delamination分类
机械工程引用本文复制引用
张云霄,范志超,王哲,曹文红,徐鹏,吕炎峰,李雨阳..大容量Ⅳ型储氢气瓶过渡区域的分层失效行为研究[J].压力容器,2025,42(6):1-8,8.基金项目
国家重点研发计划项目(2020YFB1506100) （2020YFB1506100）
合肥通用机械研究院有限公司博士科技基金项目(2023010789) （2023010789）
