轻工机械2025，Vol.43Issue(3)：1-8,8.DOI:10.3969/j.issn.1005-2895.2025.03.001
碳纤维针刺预制体的微尺度模型构建
Microscale Model Construction of Carbon Fiber Acupuncture Preform
摘要
Abstract
In order to explore the needle forming mechanism of carbon fiber needled precast body at the microscopic scale,the research group proposed a numerical simulation method of virtual fiber structure of carbon fiber needled precast body.Based on the microscopic image of the carbon fiber mesh embryo to obtain the fiber trajectory characteristics and distribution characteristics of the fibers,a virtual fiber trajectory generation method and a virtual mesh embryo fiber distribution method were developed,a virtual carbon fiber mesh embryo was established,on this basis,a finite element needling dynamics analysis and needling experiments were carried out,and the needled pore cross section of finite element simulation was compared with the needled pore of the actual mesh embryo.The results show that the needling pore cross section of the actual mesh embryo matches well with the needling dynamics model.The construction of the microscale model of carbon fiber needled precast is helpful to understand the pore structure and internal fiber changes of the needled precast during the needling process,and provides a good basis for analyzing the porosity and the mechanical properties of the carbon-carbon composites.关键词
碳纤维/虚拟纤维/碳纤维网胚/针刺过程/微观图像Key words
carbon fiber/virtual fiber/carbon fiber mesh embryo/needling process/microscopic image分类
机械工程引用本文复制引用
应志平,孙雪岩,陈海洋..碳纤维针刺预制体的微尺度模型构建[J].轻工机械,2025,43(3):1-8,8.基金项目
国家自然科学基金项目(52305428). （52305428）
