文献类型：期刊文献

英文题名：Strain prediction and analysis of GF/epoxy composite cylindrical shells with various internal defects

作者：Bai, Hui[1];Hui, Hu[1];Yang, Bin[2];Huang, Song[1];Huang, Da[3];Yuan, Yiwen[3];Xian, Guang[4]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai, Peoples R China;[2]Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai, Peoples R China;[3]Shanghai Inst Special Equipment Inspect & Tech R, Shanghai, Peoples R China;[4]Sixth Acad CASIC, 41st Res Inst, Hohhot, Peoples R China

年份：2021

卷号：50

期号：8

起止页码：384

外文期刊名：PLASTICS RUBBER AND COMPOSITES

收录：;EI(收录号：20211510188639);WOS:【SCI-EXPANDED(收录号:WOS:000636866000001)】；

基金：This work was supported by the Fundamental Research Funds for the Central Universities: [grant number 222201714015]; the National Natural Science Foundation of China: [grant number 11702097]; the National Natural Science Foundation of China: [grant number 51835003].

语种：英文

外文关键词：GF; epoxy cylinder; 3D FE simulation; progressive damage; delamination defects; fracture defects‌ strain and stress prediction; ‌ internal pressure; external displacement load

摘要：A three-dimensional (3D) finite element model is built to investigate the strain response of glass fibre reinforced epoxy matrix (GF/epoxy) cylindrical shells. Internal defects including delamination (IDD) and fracture defects (IFD) with different areas are considered. Progressive damage models are adopted to predict the circumferential strain (CS) and longitudinal strain (LS) and stress distribution. Results show that CS is the dominant strain when the GF/epoxy cylinders contain IDD, and the maximum LS and Mises stress position coincides with the loading position. The maximum Mises stress increases with the increasing of IDD area. However, when the cylinders contain IFD are subjected to internal pressure, the CS and LS are close. The maximum LS and Mises stress are located at the upper end of the cylinder and the defect position, respectively. The results will be useful for damage detection and health assessment of cylindrical shells containing internal defects.