Evaluation of effective properties of woven composite tubes
by
M. Wierer, J. Sejnoha and M. Sejnoha
Abstract
The stepping stone in evaluating effective elastic properties of
woven composite tubes is an accurate
geometrical description of the composite tube on meso-scale
taking the real geometry of the fiber-tow into account.
The relevant geometrical parameters gained from images of real
microstructure are provided by a powerful image analyzer Lucie.
Furthermore, the periodic character of a fiber-tows arrangement,
typical for woven composites, reduces the basic geometrical model
to a certain periodic unit cell. Two specific unit cells linked to two
different homogenization approaches are introduced. When subjected to
suitable periodic boundary conditions, the homogenized unit cells can
be periodically extended to map the effective elastic properties over
the macroscopic domain under consideration.
Last modified: Dec 12 2001