航空学报 > 2020, Vol. 41 Issue (11): 423704-423704   doi: 10.7527/S1000-6893.2020.23704

规则回转体自动铺丝轨迹规划与丝束增减

宋桂林, 王显峰, 赵聪, 高天成, 薛柯   

  1. 南京航空航天大学 材料科学与技术学院, 南京 210016
  • 收稿日期:2019-12-03 修回日期:2020-01-15 出版日期:2020-11-15 发布日期:2020-05-14
  • 通讯作者: 王显峰 E-mail:wangxf@nuaa.edu.cn
  • 基金资助:
    装备发展部装备预研共用技术项目(41422010403);江苏省基础研究计划(自然科学基金)青年基金(BK20190425);中国博士后科学基金面上资助(2018M642250);江苏省博士后科研资助计划(2018K064C)

Fiber placement trajectory planning and tows increase or decrease algorithm for revolution body

SONG Guilin, WANG Xianfeng, ZHAO Cong, GAO Tiancheng, XUE Ke   

  1. College of Materials Science&Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2019-12-03 Revised:2020-01-15 Online:2020-11-15 Published:2020-05-14
  • Supported by:
    Equipment Common Technology Project of Equipment Development Department (41422010403); Natural Science Foundation of Jiangsu Province for Youth (BK20190425); China Postdoctoral Science Foundation (2018M642250); Jiangsu Postdoctoral Science Foundation (2018K064C)

摘要: 为满足自动铺丝轨迹的满铺覆性要求,针对现阶段自动铺丝轨迹规划存在的不足,提出了不同的丝束增减算法。首先讨论纤维铺放方向的确定和中心轨迹数量的计算,设计不同铺放方向轨迹的生成算法。然后以丝束重叠系数为重要参数,对于纤维局部堆积和空缺问题提出单侧纤维裁剪算法和双侧纤维裁剪算法,并对裁剪后的重叠区域和间隙区域进行面积求解,使得纤维丝束均匀覆于芯模表面。最后基于CATIA CAA二次开发平台,将上述算法集成到纤维铺放CAD系统中,通过运动仿真系统验证算法的正确性。利用提出的丝束增减算法,实现了间隙/重叠区的均匀分布,尽量降低了富树脂区等相关缺陷的聚集对性能的不良影响。

关键词: 先进复合材料, 自动铺丝, 轨迹规划, 丝束增减, 二次开发

Abstract: To meet the requirements of full layability of automatic fiber placement and overcome the shortcomings of current trajectory planning, different tows increasing and decreasing algorithms based on path planning of AFP (Automated Fiber Placement) are proposed in this paper. The definition of fiber direction and the generation algorithm of the central track are first discussed to determine the number of central trajectories. Then, the tows overlapping coefficient is used as an important parameter to propose a single-sided fiber cutting algorithm and a double-sided fiber cutting algorithm for the local fiber accumulation and vacancy problems. The overlap area and gap area after cutting are obtained to uniformly cover the fiber tows on the surface of the core mold. Finally, based on the CATIA CAA secondary development platform, the above algorithms are integrated into the fiber placement CAD system, and the correctness of the algorithms is verified by the motion simulation system. Using the proposed tows increase and decrease algorithms, the gap/overlap areas are evenly distributed, minimizing the adverse effect of the accumulation of related defects such as the resin-rich area on the performance.

Key words: advanced composites, automatic fiber placement, fiber path planning, tows drop, secondary development

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