宇航材料工艺2026，Vol.56Issue(4)：88-92,5.DOI:10.12044/j.issn.1007-2330.2026.04.008
单向纤维增强复合材料拉伸强度预测有限元建模
Finite Element Modeling for Tensile Strength Prediction of Unidirectional Fiber Reinforced Composites
程远琦 1张书锋 1朱付磊1
作者信息
- 1. 国防科技大学智能科学学院装备综合保障技术重点实验室,长沙 410073
- 折叠
摘要
Abstract
In order to ensure the safety and reliability of composite structures in complex service environments,the ultimate strength of unidirectional carbon fiber reinforced composites(UD CFRP)was discussed in this paper.The research focuses on the dispersion of fiber strength in UD CFRP and the non-uniformity of its meso-structure.By constructing a set of UD CFRP ultimate strength prediction models that comprehensively consider the randomness and non-uniformity of fiber strength,the finite element simulation technology is used for calculation and analysis.The prediction results of the model are strictly compared with the experimental data,which verifies the high accuracy of the model in predicting the uniaxial ultimate tensile strength of UD CFRP.On this basis,this paper further proposes a strategy to optimize the fiber strength distribution.Practice has proved that by removing the proportion of fibers with lower strength,it can not only effectively improve the overall strength of the composite material,but also significantly reduce the dispersion of strength.The coefficient of variation is reduced from the original 1.42％to 0.31％,which provides a scientific basis for improving the reliability and design optimization of the composite material.关键词
有限元/单向碳纤维增强复合材料/强度预测Key words
Finite element/Unidirectional carbon fiber reinforced composite(UD CFRP)/Strength prediction分类
通用工业技术引用本文复制引用
程远琦,张书锋,朱付磊..单向纤维增强复合材料拉伸强度预测有限元建模[J].宇航材料工艺,2026,56(4):88-92,5.
