An improved method to analyze the tensile behavior of carpet yarn

作者：Chi, Xinfu; Huang, Shuang; Liu, Ailin; Sun, Yize^*

来源：Journal of the Textile Institute, 2017, 108(6): 1018-1021.

DOI：10.1080/00405000.2016.1209828

• Viscoelasticity
• nonlinear
• carpet yarn
• constitutive model
• stress relaxation

Since the strain, friction, and vibration of carpet yarn have direct impact on the quality of tufted carpet, mechanical properties of yarn play an important role in carpet weaving. An improved method based on Boltzmann superposition principle for describing mechanical behavior of carpet yarn is presented in this paper, which greatly reduces the amount of calculation and further improves the fitting precision. To estimate the performance of the model, we carry out some experiments on carpet yarn specimens, and compared with a nonlinear viscoelastic model widely used in studying nonlinear material. The results showed that the improved method and the nonlinear viscoelastic model perfectly fit the stress relaxation experimental curves when the deformation of the specimens is small, however the improved method is more accurate than the nonlinear viscoelastic model based on single integral constructive equation when the models are used to predict the stress relaxation responses.

• 出版日期2017
• 单位东华大学