A simple lattice mode was defined and analyzed for investigating the stress-strain behavior of plain woven fabrics stretched in the biased directions. The stress-strain curve can be divided into initial elastic and strain hardening regions. The stress-strain relationships for the two regions were calculated and discussed with experimental results. The strain at a certain stress, the maximum strain of initial elastic region and the modulus of strain hardening region were calculated, and the results were compared with expermental values.
