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ISBN 9783843930147

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978-3-8439-3014-7, Reihe Ingenieurwissenschaften

Monireh Fazeli
Technology development for woven node structures with complex geometry and in integral design for fiber-reinforced composite applications

189 Seiten, Dissertation Technische Universität Dresden (2016), Softcover, B5

Zusammenfassung / Abstract

Within this dissertation a process was developed for a productive, automated manufacturing of complex, woven node structures based on carbon fiber for automotive and aeronautics applications. This new technology allows for the weaving of complex, integrated node structures with multi-directional spatial branching without subsequent assembly requirements. The node structures were produced on a shuttle weaving loom as multi-surface woven fabrics in one piece. In order to flatten the 3D-node structure into a 2D node schematic, the 3D model was cut open along the particular edge/s of the structure. The resulting gaps in the flattened model were filled with floating yarns in weaving process. The shape of the gaps depends on the arrangement of the tubes in the required nodal structure and are determined mathematically. Pulling floating warp yarns after completing the weaving process contracts the area and joins the two cutting edges in the final structure. These newly developed node structures show great potential for lightweight construction applications. They can be manufactured with great reproducibility and a high degree of automation. The tube profiles are produced seamlessly, and the connection points between the tubes are jointless. The technological concept was proven to be viable by manufacturing of various complex spatial profile nodes.