This paper presents results related to the Tailored Fibre Placement (TFP) Technology of 4 research projects accomplished at the Institute of Composite Structures and Adaptive Systems of DLR. The main result is the TFP design tool TACO (Tailored Composite Design Code), which was developed for the optimization of lightweight aerospace structures. It changes the fibre orientations within a selected layer of a composite Finite Element model. For a given load case, the fibres are aligned as closely as possible to the direction of the principal stresses. In this way, the shear stresses in the structure are minimized and thus its load-carrying capacity is increased. The final version of TACO is a user-friendly tool applicable in the industrial day-to-day design process. TACO was successfully applied to optimize a preliminary version of the HTP (Horizontal Tail Plane) connection beam - a part of the Airbus A340- 500/600 fuselage structure - in TFP technology. The optimized HTP connection beam was manufactured and tested. The test results were compared to test results for a conventional HTP connection beam made of fabrics that had been tested earlier. For the critical load case bending the load carrying capacity was 8% worse, however, for the other load cases there was a significant improvement of about 60 % for tension and 79 % for compression. The running project KRAFT investigates basic research questions of the TFP technology. It aims to improve the understanding and the application of the TFP technology within the industrial process and will derive design recommendations. The finished project ROVING aimed to develop a tool which generates automatically a continuous and easy to manufacture distribution of the rovings out of the optimized TACO calculation. During the project different concepts were developed, tested and evaluated. They build the foundation for further steps which have to be done in a follow-up project. It can be concluded that the TFP technology promises reserve capacities and significant weight reduction for structures which are subjected to a smaller number of load cases.


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    Title :

    Tailored fibre placement optimization tool


    Additional title:

    Optimierungswerkzeug für TFP-Technologie


    Contributors:


    Publication date :

    2006


    Size :

    10 Seiten, 16 Bilder, 20 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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