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ANALYTICAL METHODS FOR TEXTILE COMPOSITES
8-10
8.4 PW, SAT5, SAT8
Author
: Ivatury S. Raju
References:
I.S. Raju and John T. Wang, “Classical Lamination Theory Models for Woven
Fabric Composites,” J. of Composites Technology and Research, 16[4], 1994, pp.
289-303.
User
Manual
:
None. Example data files provided with code.
Format:
FORTRAN code which may be compiled for the target machine.
Geometric
Model:
2-dimensional unit cells are defined for plain weaves, 5-harness satin weaves, and
8-harness satin weaves. Non-rectangular, minimal unit cells are used for the satin
weaves. Within the unit cells, regions are defined in which the yarns are either
straight or undulate sinusoidally. Yarn cross-sections are effectively rectangular.
The length of the undulating cross-over points is computed to match the specified
fiber volume fraction.
Stiffness
Model:
Isostrain assumptions are used to derive plate stiffness matrices (A, B, and D).
Thermal expansion coefficients are computed.
Strength
Model:
None.
Data
Required:
Yarn and matrix stiffness properties. Yarn spacing, tow thickness, ply thickness,
yarn volume fraction, yarn packing fraction.