Effective Thermomechanical Behavior Of Plain-Weave
Fabric-Reinforced Composites Using Homogenization Theory
A. Dasgupta and S. Bhandarker
A micro-mechanical analysis is presented to obtain the effective macro-scale
ortho-tropic thermomechanical behavior of plain-weave fabric reinforced
laminated composites based on a tow-scale asymptotic homogenization theory.
The model is based on the properties of the constituents and an accurate,
three-dimensional simulation of the weave micro-architecture, and is used
for predicting the thermomechanical behavior of glass-epoxy (FR-4) woven-fabric
laminates typically used by the electronics industry in Multi-layered Printed
Wiring boards (MLBs). Parametric studies are conducted to examine
the effects of varying fiber volume fractions on constitutive properties.
Nonlinear constitutive behavior due to matrix nonlinearity and post damage
behavior due to transverse yarn failure under in-plane uniaxial loads is
then investigated. Numerical results obtained from the model show
good agreement with experimental values and with data from the literature.
This model may be utilized by material designers to design and manufacture
fabric reinforced composites with tailored effective properties such as
elastic moduli, shear moduli, Poisson's ratio, and coefficients of thermal
article is available to CALCE Consortium Members.