基于丝束增减位置动态调整的自动丝束铺放路径覆盖性优化

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (7): 49-56.

基于丝束增减位置动态调整的自动丝束铺放路径覆盖性优化

蒋敏^1,2,3, 吴保林^1,2,3*

1.中国科学院自动化研究所精密感知与控制研究中心,北京 100190;
2.中国科学院大学计算机与控制学院,北京 100049;
3.天津中科智能技术研究院,天津 300300

收稿日期:2017-12-26 出版日期:2018-07-25 发布日期:2018-07-20
通讯作者: 吴保林(1972-),男,博士,研究员,主要从事复合材料自动铺放成型方面的研究,baolin.wu@ia.ac.cn。
作者简介:蒋敏(1994-),男,硕士,主要从事复合材料自动铺丝成型路径规划方面的研究。
基金资助:
天津市智能制造科技重大专项(16ZXZNGX00120)

OPTIMIZATION OF PATH COVERAGE OF AUTOMATED FIBER PLACEMENT BASED ON DYNAMIC ADJUSTMENT OF THE POSITION OF TOW CUTTING AND RESTARTING

JIANG Min^1,2,3, WU Bao-lin^1,2,3*

1.Research Center of Precision Sensing and Control, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China;
2.School of Computer and Control Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
3.TianJin Intelligent Tech. Institute of Casia, Tianjin 300300, China

Received:2017-12-26 Online:2018-07-25 Published:2018-07-20

摘要/Abstract

摘要： 自动丝束铺放(Automated Fiber Placement,简称“AFP”)是一种先进的复合材料成型方法,可广泛应用于航空航天、风电、新能源汽车等领域。在丝束铺放过程中,由于构件外形的复杂性,相邻铺放路径之间的距离不能保持恒定,很容易产生丝束重叠和间隙等缺陷。通过应用丝束增减操作,可以减少丝束重叠和间隙的产生。现有的方法都是选取固定的丝束增减位置,缺乏关联构件几何特征的综合考虑。通过分析不同情形下丝束重叠和间隙的产生原因及覆盖区域计算方式,提出了一种基于丝束增减位置动态调整的丝束路径覆盖性优化方法,该方法能够有效减少铺放过程中丝束重叠和间隙的产生。最后,通过开展一系列计算及仿真实验,证明了该优化方法的有效性。

关键词: 复合材料, 自动丝束铺放, 丝束路径覆盖性, 丝束增减

Abstract: Composites are increasingly used in aerospace and automotive because of their high strength and stiffness. Among the production technologies, Automated Fiber Placement (AFP) is a high-efficiency one to manufacture high-quality composites, especially for complicated surface structures. During the process of AFP, path planning is an essential technology and the coverage of fiber path has a great impact on the strength of composite parts. When the fiber is laid on the mould, the distance between adjacent laying paths can′t be kept constant due to the complex shape of structures, and it will cause many fiber overlaps and gaps. Although overlaps and gaps can be reduced by applying the tow cutting and restarting operation, the existing methods just select a fixed operation position. This strategy doesn′t take into account the geometric features of structures. To overcome this problem, the paper proposed a novel strategy in which the position of the tow cutting and restarting is dynamically adjusted. Firstly, the fiber overlap and gap in various situations are analyzed. Then, an optimization model is established, in which the total area of the fiber overlaps and gaps is defined as the optimization objective. By optimizing the position of the tow cutting and restarting, the area of fiber overlaps and gaps can be reduced effectively. Finally, a series of simulation experiments are conducted, the optimization leads to a 66.67% and 20.41% reduction in the total area of fiber overlaps and gaps, respectively, in the two situations at most, which is a considerable improvement compared to the existing method. Therefore, the fiber cutting and restarting strategy proposed in this paper can indeed reduce the fiber overlaps and gaps, it can improve the quality of composite parts.

Key words: composites, automated fiber placement, fiber path coverage, tow cutting and restarting

中图分类号:

TB332

蒋敏, 吴保林. 基于丝束增减位置动态调整的自动丝束铺放路径覆盖性优化[J]. 玻璃钢/复合材料, 2018, 0(7): 49-56.

JIANG Min,WU Bao-lin,*. OPTIMIZATION OF PATH COVERAGE OF AUTOMATED FIBER PLACEMENT BASED ON DYNAMIC ADJUSTMENT OF THE POSITION OF TOW CUTTING AND RESTARTING[J]. Fiber Reinforced Plastics/Composites, 2018, 0(7): 49-56.

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