Mathematical Approximation of the Stress-strain Curves of Fabrics

In order to display the characteristic draping behavior of particular type of fabrics, it is important to incorporate the mechanical properties of the fabrics into the simulator. In this research, the mechanical properties of fabrics were first measured using the Kawabata Evaluation System (KES). And the KES plots were approximated with sectioned quadratic polynomials based on least-square fitting method, which were then incorporated into the mass-spring model to calculate internal forces. At last, through comparison of the experimental and fitted plots, and fabric drape simulation process, it was proved that the simulation results using this method can reflect the characteristic draped pattern of corresponding types of fabrics.