Research on Multi-needles-multi-directions Cooperative Weaving Path Generation Method of Composite Preform#br#

doi:10.3969/j.issn.1004-132X.2021.10.002

Abstract

Abstract: The preform with convex polygonal section was fabricated using the multi-needles- multi-directions method, interference would occur between the x and y-direction fibers. A method of generating multi-needles-multi-directions cooperative weaving path was proposed. The shape characteristics of the cross-sectional profile of the preform were analyzed by using geometric abstraction. The combination of the laying direction of the sub-regions was discussed after dividing the cross-sectional profile, and the conditions for generating the interference-free weaving path of the cross-sectional profile were obtained. A typical preform was fabricated by the path generation method, it is found that the fibers laid in different directions will not interfere, and the fibers inside the preform are complete and will not overlap. The results show that the path generation method is rational.

Key words: composite, preform, multi-needles-multi-directions, path planning, regional division

摘要： 针对凸多边形复杂截面预制体x、y方向纤维束多针多向铺纱干涉问题，提出了一种多针多向协同织造路径生成方法。采用几何抽象方法，分析了预制体截面轮廓的形状特点。通过划分截面轮廓区域，分析了子区域的铺放方向组合方式，得到了截面轮廓生成无干涉织造路径的条件。运用该方法进行典型预制体织造实验，发现不同方向的纤维束没有产生干涉，预制体内部纤维束完整且没有交叠，实验表明该路径生成方法合理有效。

关键词: 复合材料, 预制体, 多针多向, 路径规划, 区域划分

CLC Number:

TH16

CHEN Zhe, LIU Feng, WU Xiaochuan, DU Wudi. Research on Multi-needles-multi-directions Cooperative Weaving Path Generation Method of Composite Preform#br#[J]. China Mechanical Engineering, 2021, 32(10): 1151-1156.

陈哲, 刘丰, 吴晓川, 杜悟迪. 复合材料预制体多针多向协同织造路径生成方法研究[J]. 中国机械工程, 2021, 32(10): 1151-1156.

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