Evaluation of effective thermoelastic properties of
random fibrous composites
by
M. Sejnoha, J. Zeman and J. Sejnoha
Abstract
Effective thermal material properties are found for random fibrous
composite systems. In particular, the graphite fiber tow embedded in
the polymer matrix is selected as a representative of the
two-phase disordered composite media. Random character of fibers
arrangement is described here using the second order intensity
function. When used with a suitable optimization procedure, this
function allows to construct a representative periodic unit cell,
which statistically resembles the real microstructure. Standard
homogenization procedure based on the stress control is then invoked to
generate a system of governing equations to estimate the overall
coefficients of thermal expansion of the composite. Various
connections between the thermal and mechanical properties are further
reviewed for the completeness.
Last modified: Dec 12 2001