Optimum Modeling of 3-D Circular Braided Composites.

Abstract

An effective geometric modeling is developed in order so that precise material properties of the 3-D circular-braided composite can be estimated. Most researchers of this field use straight lines to describe their yarn paths in the braided composite unit cell. However, in this study, yarn paths are described as curved lines using third-order spline, which are close to real geometric formation of the 3-D braided composite. Unit cells should be classified into several different categories because of a specificity of the 3-D braided composite. Particularly, in terms of 3-D circular-braided composites, a couple of unit cells can be taken.