Title: Holistic Design Analysis Approach for Additive Tape Placement Process
Authors: Anthony Cheruet and Pierre-Yves Lavertu
Abstract: This paper is focused on the design optimization of complex 3D composites structures made by additive manufacturing processes. There are commercial CAD-CAM software solutions for detailed offline path programming, but there is a growing need for innovative tools and methodologies for doing trade off studies very early at design stage. Most of the technology available on the market are not really suited to easily check and compare various design proposals, with an efficient compromise between accuracy and performances, especially for thick and large laminates. A new innovative solution has been developed, allowing both designers and stress engineers to quickly analyze complex double-curved geometries, including variable stiffness approach and structural analysis of manufacturing defects. Automatic Fiber Placement (AFP) is a fast and efficient deposition process of carbon prepreg for large component applications. To accommodate the composite strips onto a double curved surface, the tows can be cut, restarted and slightly mis-oriented resulting in the apparition of gaps between tows. These defects, the gaps and the misalignment of the tows, affect the mechanical performance of the final part.
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Conference: SAMPE 2020 | Virtual Series
Publication Date: 2020/06/01
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