基于芳纶平纹织物微观几何结构的纱线抽拔力学性能分析  

Mechanical property analysis of yarn pull-out from aramid plain woven fabrics based on micro-geometry

作　　者：马莹 刘岳岩 赵洋 陈翔 禄盛 胡瀚杰 MA Ying;LIU Yueyan;ZHAO Yang;CHEN Xiang;LU Sheng;HU Hanjie(School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi′an Jiaotong University, Xi′an, Shaanxi 710049, China;The Green Aerotechnics Research Institute of Chongqing Jiaotong University, Chongqing 401120, China)

机构地区：[1]重庆邮电大学先进制造工程学院,重庆400065 [2]西安交通大学机械结构强度与振动国家重点实验室,陕西西安710049 [3]重庆交通大学绿色航空技术研究院,重庆401120

出　　处：《纺织学报》2022年第4期47-54,共8页Journal of Textile Research

基　　金：国家自然科学基金青年科学基金项目(12002070);重庆市留学人员回国创业创新项目(cx2018126);重庆市教育委员会科学技术研究项目(KJQN201900632)。

摘　　要：为研究芳纶平纹织物纱线抽拔力学性能及各参数的影响规律,建立纱线抽拔数学模型,为后续数值模型提供理论基础。采用数字单元法模拟芳纶平纹织物织造过程,获得其微观几何模型,并计算得出纱线轮廓。在此基础上,使用ABAQUS模拟单纱抽拔过程,建立纱线厚度方向单层网格划分准则和纱线材料属性,获得横向预紧力、纱线间摩擦因数对纱线抽拔力学性能的影响规律及能量转换机制。结果表明:仿真所得抽拔力峰值和横向预紧力峰值与实验值仅差5.96%和-8.51%,外力做功主要通过摩擦耗散;随着横向预紧力和纱线间摩擦因数的增大,抽拔力峰值增长速度逐渐减缓,所建模型可较为准确地预测纱线抽拔性能。In order to study the mechanical properties and parametric influence of yarn pull-out from aramid plain woven fabrics,an analytical model was proposed to provide the theoretical bases for subsequent numerical modeling.The micro-geometry of the plain woven fabric was generated through weaving process simulation using the digital element approach.On this basis,the yarn pull-out behavior of a single yarn was simulated by ABAQUS.One solid element is used through the thickness of the yarn and the yarn material properties were defined.The effect of transverse pre-loading and yarn-to-yarn friction on pull-out behavior and energy transfer mechanism were obtained.The simulation results show that the differences between the simulated peak pull-out force and the peak transverse force compared to the experimental ones are 5.96%and-8.51%,respectively.The external energy is mainly dissipated in the form of frictional energy.When the transverse pre-loading and yarn-to-yarn friction coefficient increases,the growth rate of the yarn peak pull-out force gradually decreases.The proposed model is capable of predicting the yarn pull-out performance with reasonable accuracy.

关 键 词：芳纶平纹织物 微观几何模型 纱线抽拔 抽拔力峰值 数字单元法 

分 类 号：TB332[一般工业技术—材料科学与工程]