Inter-fiber sliding in fabric shaping process

In the fabric shaping process during resin transfer molding, fabrics are deformed due to inter-fiber sliding and buckling of yarns. We have observed inter-fiber sliding and yarn buckling in the deep drawing of fabrics by a cylindrical punch. The amount of punch traveling and the molding die radius affect the occurrence of inter-fiber sliding and yarn buckling. Comparing simulation results and actual deformation of fabrics, we should take account of inter-fiber-sliding and buckling of yarns.