宇航材料工艺2024，Vol.54Issue(6)：71-77,7.DOI:10.12044/j.issn.1007-2330.2024.06.010
机织复合材料变曲率薄壳件固化特性分析
Analysis of Curing Characteristics of Thin Shell Woven Composites With Variable Curvature
摘要
Abstract
Composite structures made of woven composites undergo both physical and chemical changes during the curing process,and will produce deformation after demolding,which significantly impacts the accuracy of the parts.In order to accurately predict the deformation,this paper first establishes a multiscale analysis model for the curing deformation of woven composites parts,and combines the meso-mechanical method to obtain the evolution of mechanical and thermal properties of woven composites during the curing process.Then,the effects of curvature and thickness parameters on the curing characteristics of woven composite parts were further analyzed using the sequential thermo-mechanical coupling analysis method to simulate the thin shell parts of variable curvature and laminates with different curvature.The results showed that woven composite parts with a lower thickness have a lower temperature gradient during curing and a more uniform curing degree.The curvature parameters influence on the curing deformation of woven parts,and the thinner the member thickness,the more significant the effect of curvature on deformation.After the thin shell parts of variable curvature was cured and demolded,the maximum displacement in the warp and weft directions is greater than that in the thickness direction at the same curvature.关键词
曲率/代表性体积单元/多尺度/变形/残余应力Key words
Curvature/Representative volume element/Multiscale/Deformation/Residual stress分类
通用工业技术引用本文复制引用
姚文标,牛雪娟..机织复合材料变曲率薄壳件固化特性分析[J].宇航材料工艺,2024,54(6):71-77,7.基金项目
天津市自然科学基金重点项目(23JCZDJC00450) （23JCZDJC00450）
