Numerical Dynamic Analysis of Fabric Transport in Sewing Process

The paper addresses the problem of uncontroled fabric motion resulting in irregular formation of the sewing stitch. A numerical analysis is proposed based on the dynamic model with friction. Equations of motion are derived for several possible situation with respect to the friction conditions. Time – displacements diagrams are obtained by numerical integration. The results indicate the influence of the process parametres to the regularity of the fabric motion.