Textile Fabric Force-Displacement Curve

The relative importance of each of these deformation mechanisms is fabric-specific and in some cases certain deformation modes may not be utilized at all. 

It can be seen that the curves for both the woven and knitted fabrics follow similar trends. Intra-yam or inter-fiber friction (a) is most influential at the origins of both curves, starting out as the static friction that needs to he overcome to initiate the sliding of long fibers past one another. 

It is important to note that while the different regions of the force-displacement curves shown in Hgure 10 have been drawn with similar orders of magnitude for explanation purposes, this is usually not the case in practice. For instance, actual force-displacement curves of woven fabric can look quite steep and linear, indicating that regions (e) and (f) are the most dominant. Furthermore, for most fabrics, region (a) will be significantly smaller than the rest of the curve. 

---

During the deformation of a textile fabric, combinations of these mechanisms occur simultaneousiy and the influence of each mode ehanges continuously throughout the entire deformation. Figure 10 compares the force displacement curves for woven and knitted fabrics, with regions of the curves identified to show where certain deformation modes are thought to be of greatest influence. 

---