Abstract
An algorithm for filament winding of non-axisymmetric tapered composite components having polygonal cross-section is developed for two-axes filament-winding machines. It is based on a geometrical approach, in which the input parameters include the mandrel shape, winding angle, position of mandrel and delivery point at the beginning of the filament-winding process. By using geometrical and trigonometrical relations, necessary data for the complete filament-winding process are generated. These data include the corresponding values of the angular position of the mandrel, the delivery-point position and the fiber lay-down path for the complete winding process. The data generated can also be used to calculate the total material required for the complete winding of the component. The algorithm was used to develop an interactive computer program, “POLYGONFW”, which can generate the corresponding values of the angular position of the mandrel, the delivery-point position and the fiber lay-down path for the complete winding process for any tapered mandrel having polygonal cross-section. The algorithm was verified experimentally, using a mandrel having the form of a square cross-sectional pyramid and a computer-controlled two-axes filament-winding machine. The experimentally measured fiber-winding angle agreed well with the intended fiber-winding angle.
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