Theoretical modeling of the tensile behavior of low-twist staple yarns: Part II – theoretical and experimental results

Abstract

To verify the theoretical model of the tensile behavior of staple yarns presented in Part I of this paper series, monotonic and cyclic tensile tests were carried out. Also, several yarn parameters were varied to study their effect on yarn behavior. The yarn parameters considered include: yarn twist, yarn count, fiber friction coefficient and fiber type. Comparison between experimental data and theoretical predictions shows that the predicted yarn behavior under monotonic and cyclic tensile loads is in reasonable agreement with experiment results. The yarn strength and the general shape of the yarn tensile stress–strain curves are well captured by the model. Also, the predicted effect of yarn parameters on yarn behavior agrees well with experimental results.