A skeletal line-based printing path planning method for continuous fiber reinforced composite structures

IF 11.1 1区 工程技术 Q1 ENGINEERING, MANUFACTURING
Yamin Li , Xiaobao Zhi , Xin Yan , Jiancheng Hao , Shangqin Yuan , Tong Gao , Jihong Zhu , Weihong Zhang
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引用次数: 0

Abstract

Continuous fiber-reinforced composite (CFRC) 3D printing integrates the benefits of additive manufacturing and advanced composites, enabling the fabrication of complex geometries with enhanced mechanical performance. However, CFRC printing faces significant path planning challenges. Conventional path generation methods frequently introduce printing defects such as voids and fiber misalignment, which substantially compromise the structural integrity of printed components. This paper proposes a novel skeletal line-based continuous path planning methodology that optimizes both manufacturability and mechanical strength, which is especially suitable for beam-like structures. The approach begins with extraction of the part's medial axis skeleton, followed by strategic decomposition into simplified sub-curves through skeleton node disconnection. Each sub-curve undergoes offset-based sub-path planning, after which the generated sub-paths are intelligently reconnected to form continuous loops. The process culminates in global path continuity through systematic loop interconnection. Experimental validation was performed to evaluate the efficacy of the proposed methodology. Comparative analysis demonstrates that our approach significantly reduces printing-induced defects while improving mechanical performance relative to conventional path planning techniques, including the Connected Fermat Spiral (CFS) method.
基于骨架线的连续纤维增强复合材料结构打印路径规划方法
连续纤维增强复合材料(CFRC) 3D打印集成了增材制造和先进复合材料的优点,能够制造具有增强机械性能的复杂几何形状。然而,CFRC打印面临着重大的路径规划挑战。传统的路径生成方法经常引入打印缺陷,如空隙和纤维错位,这大大损害了打印部件的结构完整性。本文提出了一种新的基于骨架线的连续路径规划方法,该方法可优化制造性和机械强度,特别适用于类梁结构。该方法首先提取零件的内轴线骨架,然后通过骨架节点断开,战略性地分解成简化的子曲线。每个子曲线经过基于偏移量的子路径规划,生成的子路径智能重新连接,形成连续的循环。这一过程通过系统的环路互连在全球路径连续性中达到高潮。实验验证了所提出方法的有效性。对比分析表明,与传统的路径规划技术(包括连通费马螺旋(CFS)方法)相比,我们的方法显著减少了印刷引起的缺陷,同时提高了机械性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Additive manufacturing
Additive manufacturing Materials Science-General Materials Science
CiteScore
19.80
自引率
12.70%
发文量
648
审稿时长
35 days
期刊介绍: Additive Manufacturing stands as a peer-reviewed journal dedicated to delivering high-quality research papers and reviews in the field of additive manufacturing, serving both academia and industry leaders. The journal's objective is to recognize the innovative essence of additive manufacturing and its diverse applications, providing a comprehensive overview of current developments and future prospects. The transformative potential of additive manufacturing technologies in product design and manufacturing is poised to disrupt traditional approaches. In response to this paradigm shift, a distinctive and comprehensive publication outlet was essential. Additive Manufacturing fulfills this need, offering a platform for engineers, materials scientists, and practitioners across academia and various industries to document and share innovations in these evolving technologies.
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