J. Whitcomb et al., EVALUATION OF HOMOGENIZATION FOR GLOBAL-LOCAL STRESS-ANALYSIS OF TEXTILE COMPOSITES, Composite structures, 31(2), 1995, pp. 137-149
Global/local analysis is essential for textile composites because of t
heir unusually large microstructure. Homogenized engineering propertie
s were used in this study to obtain global solutions. The response of
a local region was approximated by several fundamental strain or stres
s modes. The magnitudes of these modes, which were determined from the
global solutions,:were used to scale and superpose solutions from ref
ined analyses of the fundamental modes, thus obtaining a refined local
solution. Results from numerical experiments showed that the use of h
omogenized engineering properties often results in significant errors
in prediction of global response, especially at boundaries. Also, the
local predictions were very sensitive to the choice of fundamental mod
es.