Design of Braided Composite Pipes

摘要

The features of the braided fabric as reinforcements of composite materials are continuity of all fiber bundles, therefore, the excellent mechanical properties were expected. Other characteristic is capability of changing the braiding angle. Therefore, the mechanical properties can be variously designed according to the requirement. However, the fundamental parameters for the internal structure of the braided fabric, such as the braiding angle, the distance between braiding yarns, and the cross-sectional shape of braiding yarn, are not independent and they have the interrelationship each other. Therefore, designing the structural member of braided composite become difficult in considering the mechanical properties and the dimension such as thickness of layers. In this study, the internal structure of the braided composite was investigated on carbon fiber reinforced braided composite tube by changing the braiding angle. Furthermore, Finite Element Model considering not only the internal stricture but also the filament distribution in fiber bundle was proposed.