宇航材料工艺2017，Vol.47Issue(6)：29-35,7.DOI:10.12044/j.issn.1007-2330.2017.06.005
自紧工艺对CFRP气瓶应力水平的影响
Stress Analyses of CFRP Cylinder Under Autofrettage Process
摘要
Abstract
Stress and damage analyses are performed on a carbon fiber overwrapped aluminum-lined cylinder un der internal pressure through finite element method (FEM) by ABAQUS software.The variational thickness and wound angle of the head is reflected in the finite element model in accordance with the actual structure.A progressive damage model considering four failure modes are adopted for the composite,i.e.,the fiber tension and compression,the matrix tension and compression.The regularities of the initiation and distribution of autofrettage pressure are analyzed.The effects of the autofrettage pressure on the stress amplitude of the liner are also discussed.It is concluded that when the cylinder carrying pressure is greater than the autofrettage process pressure,the PEEQ value of the liner will con tinue to accumulate after the autofrettage process,and the autofrettage process of the cylinder starts to fail.关键词
CFRP气瓶/铝内胆/爆破压力/自紧工艺/有限元分析Key words
CFRP cylinder/Aluminum liner/Burst pressure/Autofrettage process/Finite element analysis分类
通用工业技术引用本文复制引用
王宗鑫,赵建平..自紧工艺对CFRP气瓶应力水平的影响[J].宇航材料工艺,2017,47(6):29-35,7.基金项目
国家重点研发计划项目资助(2016YFC0801903) （2016YFC0801903）
