材料工程2016，Vol.44Issue(4)：76-81,6.DOI:10.11868/j.issn.1001-4381.2016.04.013
纤维缠绕复合材料起伏区域残余应力
Residual Stresses in Local Fiber Undulations for Filament-wound Composites
和欣辉 1韩小平2
作者信息
- 1. 西北工业大学 力学与土木建筑学院,西安 710129
- 2. 西安交通大学 机械结构强度与振动国家重点实验室,西安 710049
- 折叠
摘要
Abstract
Aimed at the fiber crossover and undulation,a meso-scale model was proposed to analyze the residual stress in the undulation regions of filament-wound composites.The process induced resid-ual stress fields of filament-wound composites during curing process was numerically simulated by commerce software.Based on transit heat conductive equation,curing kinetics model and composite laminated stress analysis theories,the corresponding formulas of the finite element analysis were in-troduced.The time's course and variation scope of residual stress during curing process were fully in-vestigated through the example analysis.The results show that there is great difference of residual stress in different positions of fiber bundle.In laminated zone,the fiber bundle is under tensile stress state,while in fiber undulation zone,that is under compressive stress state,and the maximum residu-al stress appears in resin rich zone.The residual stress shows V-shaped trend along undulation direc-tion,and it appears tensile or compressive stress state in different position of fiber bundle.The maxi-mum compressive residual stress appears in the fiber maximize undulation angle.关键词
纤维缠绕复合材料/固化过程/残余应力/纤维束交叉起伏/细观模型Key words
filament-wound composite/curing process/residual stress/fiber bundle crossover and undu-lation/meso-scale model分类
通用工业技术引用本文复制引用
和欣辉,韩小平..纤维缠绕复合材料起伏区域残余应力[J].材料工程,2016,44(4):76-81,6.
