A simplified discrete-tow model for modeling stiffness and failure within woven composites.

摘要

Using a simplified discrete-tow model of a woven composite structure, it is possible to accurately predict the stiffness of a woven composite. The simplified discrete-tow model is based on the idea of discretely representing the fiber tows and resin independently as beam and shell finite elements respectively. The use of the discrete-tow model in progressive failure allows for the ability to better predict the behavior and physical orientation of the tows throughout the analysis in a manner that is more computationally efficient than a fully three-dimensional model. In the present study progressive failure is conducted using stiffness reduction in both the beam and shell elements of the discrete-tow model to represent fiber and matrix damage respectively.