Trajectory optimization for automated tape placement on triangular mesh surfaces considering gap requirements

IF 5.4 3区 材料科学 Q2 CHEMISTRY, PHYSICAL
Peng Zhang, Yuyu Li, Kejun Tang, Lairong Yin, Long Huang, Hongbing Wang
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引用次数: 0

Abstract

Automated tape placement (ATP) is an important automated process adopted for the fabrication of large composite components. Trajectory planning is the key link of ATP, which directly affects the precision and efficiency of the layup process, and the quality of final products. Presently, most existing trajectory optimization methods for ATP focus on smooth surfaces. Nevertheless, as commercial CAD/CAM software generally uses NURBS (Non-uniform Rational B-Splines) for modelling, the difficulty of finding the solution and the low efficiency associated with the calculation process are inevitable. The discrete methods provide alternatives for designing layup trajectories, whereas their accuracy is seldom analyzed. Furthermore, a path optimization algorithm for eliminating gap problems while preventing wrinkles on discrete models is rarely reported. In this paper, the adjustment of layup trajectories for ATP is considered on triangular meshes. Firstly, the triangular mesh is reconstructed as a Nagata patch to recover the original geometry with good accuracy. Then, a numerical method for tracing desired paths on the Nagata patch set is provided, and the computation efficiency is validated. Next, two optimization methodologies are proposed to improve the layup of composite tapes while avoiding wrinkles. Finally, the presented two strategies are examined on a discrete hyperbolic surface and a discrete freeform surface, and some of the results are delivered.
考虑间隙要求,优化三角形网格表面上胶带自动贴放的轨迹
自动铺带(ATP)是制造大型复合材料部件所采用的一种重要的自动化工艺。轨迹规划是 ATP 的关键环节,直接影响铺放过程的精度和效率,以及最终产品的质量。目前,大多数现有的 ATP 轨迹优化方法都侧重于光滑表面。然而,由于商用 CAD/CAM 软件一般使用 NURBS(非均匀有理 B-样条曲线)建模,因此在计算过程中难免会出现求解困难和效率低下的问题。离散方法为设计铺层轨迹提供了替代方案,但很少对其精度进行分析。此外,一种既能消除间隙问题,又能防止离散模型起皱的路径优化算法也鲜有报道。本文考虑在三角形网格上调整 ATP 的铺层轨迹。首先,将三角形网格重构为永田补丁,以良好的精度恢复原始几何形状。然后,提供了在长田补丁集上追踪所需路径的数值方法,并验证了计算效率。接着,提出了两种优化方法,以改进复合材料带的铺设,同时避免起皱。最后,在离散双曲面和离散自由曲面上检验了所提出的两种策略,并给出了部分结果。
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
ACS Applied Energy Materials
ACS Applied Energy Materials Materials Science-Materials Chemistry
CiteScore
10.30
自引率
6.20%
发文量
1368
期刊介绍: ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
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