纺织工程学报2023，Vol.1Issue(6)：25-34,10.
三组分螺旋拉胀纱的拉伸力学性能及影响
Tensile Mechanical Properties and Influence of Three-component Helical Auxetic Yarn
摘要
Abstract
The construction of mechanical model is a common method to study the mechanical properties of yarns.A viscoelastic-plastic model was established to predict the tensile stress-strain relationship of the three-component helical auxetic yarn.The relationship between yarn structure,negative Poisson's ratio effect and me-chanical properties was further investigated.Based on the tensile fracture characteristics,a five-element nonlin-ear viscoelastic model composed of Kelvin element,Maxwell element and linear spring and a plastic model sim-plified to linear relationship were established.Taking the yield point as the piecewise point,the piecewise func-tion model of tensile mechanics was constructed.By introducing the correction coefficient,the validity of the model is optimized,and the correlation coefficient is greater than 0.999.On this basis,the influence of the initial spiral angle on the tensile mechanical properties was studied.The model can be used to predict the tensile prop-erties of the three-component helical auxetic yarn.The results show that the yarn structure with spiral angle as the main parameter affects the viscosity coefficient and negative Poisson ratio of the yarn,and then affects the mechanical properties and auxeticity properties of the yarn.关键词
螺旋拉胀纱/负泊松比/力学模型/粘滞系数/拉伸性能Key words
helical auxetic yarn/negative poisson ratio/mechanical model/viscosity coefficient/tensile property分类
轻工纺织引用本文复制引用
郭晨宇,蒋云,杨瑞华..三组分螺旋拉胀纱的拉伸力学性能及影响[J].纺织工程学报,2023,1(6):25-34,10.基金项目
国家自然科学基金面上项目(52273034) （52273034）
江苏省自然科学基金面上项目(BK20181350). （BK20181350）
