Optimization of filament-wound parts based on non-geodesic winding

Abstract

When designing filament-wound parts, use of an integrated strategy is recommended to take advantage of the benefits of composites despite limitations of the filament winding process. This paper describes a computer-integrated methodology for the design of filament-wound parts which includes: (1) initial part design using a computer-aided design system; (2) preliminary finite element analysis to determine ideal fibre orientations; (3) fibre path generation, including non-geodesics, to obtain feasible fibre paths; (4) choice of final lay-up sequence; and (5) composite finite element analysis to adapt the final lay-up until strength and stiffness requirements are met. The proposed methodology, embodied in the computer code CAWAR, is illustrated by application to a conical filament-wound part.