Trajectory Planning Method for Ply Drop-off Structure Based on In-situ Automatic Fiber Placement Forming Process

HU Shirui; LI Yanrui; LIAO Wenqiang; CHEN Zhikun; HUANG Zhigao; ZHOU Huamin

doi:10.3969/j.issn.1674-6457.2025.08.020

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Journal of Netshape Forming Engineering ›› 2025, Vol. 17 ›› Issue (8) : 194-202. DOI: 10.3969/j.issn.1674-6457.2025.08.020

Advanced Manufacturing Technology and Equipment

Trajectory Planning Method for Ply Drop-off Structure Based on In-situ Automatic Fiber Placement Forming Process

HU Shirui¹, LI Yanrui², LIAO Wenqiang², CHEN Zhikun¹, HUANG Zhigao^1,*, ZHOU Huamin¹

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Abstract

The work aims to conduct a trajectory planning research for automated fiber placement (AFP) according to the unique characteristics of composite ply drop-off structures. First, detailed structural modeling and design of composite ply drop-off structures were performed using the CATIA platform, with an emphasis on analyzing the geometric features of drop-off regions and their impact on ply trajectory generation. To address the shape complexity of ply drop-off surfaces, a comprehensive trajectory planning methodology integrating ply surface filling, trajectory generation, and geometric projection was proposed. This approach ensured coverage integrity in complex regions through a filling strategy, followed by geometric projection-based path partitioning for drop-off zones. Experimental validation was carried out using a laboratory-developed AFP platform to fabricate representative ply drop-off structural specimens. Experimental results demonstrated that the proposed method could efficiently generate placement trajectories adapted to the characteristics of ply drop-off structures. When non-process factors are excluded, both trajectory accuracy and placement quality reach a high level. This study provides theoretical and technical support for trajectory planning in practical engineering applications involving similar complex ply drop-off structures.

Key words

composite / ply drop-off structure / trajectory planning / automatic placement / in-situ forming

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HU Shirui, LI Yanrui, LIAO Wenqiang, CHEN Zhikun, HUANG Zhigao, ZHOU Huamin. Trajectory Planning Method for Ply Drop-off Structure Based on In-situ Automatic Fiber Placement Forming Process[J]. Journal of Netshape Forming Engineering. 2025, 17(8): 194-202 https://doi.org/10.3969/j.issn.1674-6457.2025.08.020

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