Path Planning Based on Ply Orientation Information for Automatic Fiber Placement on Mesh Surface
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Path Planning Based on Ply Orientation Information for Automatic Fiber Placement on Mesh Surface Jiazhi Pei 1 & Xiaoping Wang 1 & Jingyu Pei 1 & Yang Yang 1
Received: 11 February 2018 / Accepted: 15 February 2018 # Springer Science+Business Media B.V., part of Springer Nature 2018
Abstract This article introduces an investigation of path planning with ply orientation information for automatic fiber placement (AFP) on open-contoured mesh surface. The new method makes use of the ply orientation information generated by loading characteristics on surface, divides the surface into several zones according to the ply orientation information and then designs different fiber paths in different zones. This article also gives new idea of up-layer design in order to make up for defects between parts and improve product’s strength. Keywords AFP. Path placement planning . Fiber placement . Ply orientation information . Mesh surface
1 Introduction Fiber reinforcement composite was born at 1960s, with high strength-to-weight ratio and stiffness-to -weight ratio [1]. It was used widely in aerospace industries, because of its ideal properties. However, the composite’s characteristics aren’t beneficial for processing, compared with traditional structural material. Actually, many developed countries, such as America, Germany, France, have largely used automated tape placement (ATP) and automatic fiber placement (AFP) technology in producing fiber reinforced composite. In addition to ATP, AFP [2–4] also provides more flexible ways to make fiber tows to be placed on mould surface using so-called automated fiber placement machine. In automatic fiber placement, path planning is one of the key technologies. It is also a quite complicated process to implement, for which one must consider simultaneously many factors such as fiber affordability, interference between placement head or compaction roller, geometric constraints, mechanical constraints and much more. This technology directly affects the
* Jiazhi Pei [email protected]
1
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Appl Compos Mater
properties of products and working efficiency. In practical application, however, most of path planning methods published only consider pure geometric factors and few methods involve mechanical factors for the sake of simplicity. Abroad, the algorithms and softwares about path planning for automatic fiber placement are a little bit matured. Unfortunately publications directly targeting this issue are quite limited. Lewis and Romero [5] propose Bnatural^ path to ensure that wrinkles of tape wouldn’t be avoided. Shirinzade [6] offered a path planning algorithm for open-contoured structures, entitled the surface curve algorithm for AFP. Actually he used a surface-plane intersection strategy to formulate the initial reference path. Then the next path must be offset along the surface by a distance of one tow-width in a normal direction of the initial path, which is tang
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