文献类型：期刊文献

英文题名：Structural modeling and analysis of three-dimensional cross-linked braided preforms

作者：Du, Chengjie[1,2];Meng, Zhuo[2];Hong, Jianhan[1];Sun, Zhijun[2];Liu, Shimin[3];Chen, Rui[4];Sun, Yize[2]

机构：[1]Shaoxing Univ, Zhejiang Sub Ctr Natl Carbon Fiber Engn Technol Re, Shaoxing Sub Ctr Natl Engn Res Ctr Fiber based Com, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Zhejiang 312000, Peoples R China;[2]Donghua Univ, Coll Mech Engn, Shanghai 201620, Peoples R China;[3]Hong Kong Polytech Univ, Dept Ind & Syst Engn, Hunghom, Hong Kong, Peoples R China;[4]WISDRI Engn & Res Inc Ltd, Wuhan 430000, Peoples R China

年份：2023

外文期刊名：AUTEX RESEARCH JOURNAL

收录：SCI-EXPANDED(收录号：WOS:001111322800001)、、WOS

基金：The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of the article: This work was supported by the Special Fund of Scientific and Technological Achievements Transformation in Jiangsu Province (BA2018061), the Applied Research Project of Public Welfare Technology of Zhejiang(LGG20E030002), and the Scientific Research Starting Foundation of Shaoxing University(13011001002/207).

语种：英文

外文关键词：Three-dimensional cross-linked braiding; composites; fabric structure; modeling; structure optimization

外文摘要：Rotary braiding is widely used in the preparation of high-performance fiber composites. However, neither conventional rotary two-dimensional braiding nor rotary three-dimensional braiding can prepare three-dimensional preforms with low porosity and dense surface yarns. This article designs a three-dimensional cross-linked braiding equipment, describes the mechanism of carrier motion of three-dimensional cross-linked braiding, and obtains a numerical model of three-dimensional cross-linked braided preforms by establishing the spatial coordinate system of the braided chassis and using cubic B-spline curve fitting. The reasons for the large difference between the numerical model of preform and the real fabric are analyzed, and an optimization algorithm is proposed to make the fabric compact by gathering the yarn to the center of the fabric. The experimental samples are braided on a three-dimensional cross-linked braiding machine, and the reliability of the optimization algorithm is verified by comparing the yarn coordinates of the experimental samples with those of the optimized numerical model. The accurate establishment of the geometric model of the preform provides a solid foundation for carrying out the prediction of the mechanical properties of composite materials.