【作者】 开方明； 郑津洋； 刘鹏飞； 陈瑞； 李磊；

【Author】 KAI Fang-ming, ZHENG Jin-yang, LIU Peng-fei, CHEN Rui, LI Lei (Institute of Chemical Machinery and Process Equipment, Zhejiang University, Hangzhou 310027, China)

【机构】 浙江大学化工机械研究所；

【摘要】 高压储氢是目前燃料电池汽车的主要储氢方式。采用碳纤维增强树脂复合材料制成的70 MPa轻质高压储氢容器,容积储氢密度和单位质量储氢密度都较高,是世界各国高压储氢的研究重点。自增强是轻质高压储氢容器制造中的关键工艺。为确定容器整体在各种工况下的应力分布和最佳自增强压力,采用复合材料的层合分析方法,将内衬视为弹塑性材料,纤维树脂复合材料视为各向异性和线弹性材料,建立了容器自增强过程的理论模型。通过有限元分析模拟,数值结果表明该模型可用于轻质高压储氢容器的强度分析和设计计算。更多还原

【Abstract】 70 MPa high pressure hydrogen tank can successfully perform the role of hydrogen reservoir and fulfill the basic driving and economic requirements of FCV. 70 MPa high pressure hydrogen tank uses composite material, which leads to the lightweight construction and different load-bearing properties. This paper gives the method of theoretic modeling of autofrettage process in 70 MPa high pressure hydrogen tank of FCV based on the assumption that the liner is elastic-plastic and the outer composite is elastic. The numerical results and finite element analysis can predict the stresses and strains distributions of the entire tank in various conditions, and make sure the safety of the tank by considering special strength theory.更多还原