基于纱线交织的旋转编织预制体表面形貌预测  

Surface Morphology Prediction of Preforms in Rotational Braiding Process Based on Yarn Interlacement

作　　者：朱翔宇 单忠德 孙正 郭子桐 王尧尧 刘家乐[1] 高一岑 孙宪鹏 ZHU Xiangyu;SHAN Zhongde;SUN Zheng;GUO Zitong;WANG Yaoyao;LIU Jiale;GAO Yicen;SUN Xianpeng(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China;State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China;Nanjing Changjiang Industrial Technology Research Institute,Nanjing 211500,China)

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]南京航空航天大学航空航天结构力学及控制全国重点实验室,南京210016 [3]南京长江工业技术研究院,南京211500

出　　处：《南京航空航天大学学报(自然科学版)》2025年第2期318-326,共9页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：江苏省前沿引领技术基础研究专项基金(BK20212007);青年科学基金(52305376);中国博士后科学基金(YBA23044,YBA23031)。

摘　　要：旋转编织是一种高效的复合材料预制体成形工艺,编织过程中工艺参数的设计对预制体成形质量至关重要。传统模型由于忽略了纱线之间的相互作用,导致编织角的预测值与实际值之间存在较大误差。本文基于织物编织成形机理,划分了编织过程中的交织点行为区域,定义了纱线交织点的生成速度和消耗速度,并建立了基于预制体交织数量守恒的旋转编织数学模型,实现了对预制体编织角和纱线宽度的精确预测。此外,通过变截面芯模的编织实验验证了该模型的有效性。实验结果表明,该模型能够有效反映变截面编织过程中编织角和纱线宽度变化的滞后现象,同时探讨了不同速度配比对预制体表面质量的影响。Rotary braiding is an efficient composite preform molding process,and the design of process parameters during braiding is crucial to the preform’s forming quality.Traditional models,due to their neglect of the interactions between yarns,result in significant discrepancies between the predicted and actual braiding angles.Based on the mechanism of fabric braiding,this paper divides the interlacing point behavior regions during the braiding process,defines the generation and consumption speeds of yarn interlacing points,and establishes a mathematical model of rotary braiding based on the conservation of interlacing points in the preform.The model achieves accurate predictions of the braiding angle and yarn width of the preform.Furthermore,the validity of the model is verified through braiding experiments using a variable cross-section mandrel.Experimental results show that the model effectively reflects the hysteresis phenomenon of braiding angles and yarn width changes during the variable cross-section braiding process and explores the impact of different speed ratios on the surface quality of the preform.

关 键 词：旋转编织 编织角 预测模型 交织点 

分 类 号：TS104[轻工技术与工程—纺织工程]