纬编针织物导热性能的有限元仿真  

Finite element simulation of thermal conductivity of the weft knitted fabric

作　　者：杨恩惠 初曦 邱华[1] YANG Enhui;CHU Xi;QIU Hua(Key Laboratory of Eco-Textiles,Ministry of Education,College of Textile and Clothing,Jangnan University,Wuxi 214122,China)

机构地区：[1]江南大学纺织服装学院生态纺织教育部重点实验室

出　　处：《丝绸》2020年第1期31-36,共6页Journal of Silk

基　　金：江苏省产学研项目(BY2016022-14)

摘　　要：为了提出一种用于优化、评估、预测针织物导热性能的方法,文章探索了纬编针织物热量传递的有限元仿真模拟,尤其是夏季汗衫面料,因为其导热性能与人体舒适性密切相关。首先使用织物厚度仪和超景深显微镜获取织物结构参数,通过插入三次B样条曲线建立纬平针织物的三维几何模型。然后将单元线圈模型导入有限元分析软件STAR-CCM+中,通过网格划分、边界设置、迭代计算步骤进行数值计算,并和实验值进行了比较分析,误差在4%以内。表明此方法具有一定的实用性,可用于预测纬编针织物的导热性能。In order to propose a method for optimizing,evaluating and predicting the thermal conductivity of knitted fabrics,the finite element simulation of heat transfer of weft knitted fabrics was explored in this paper.Especially for summer T-shirt fabric,its thermal conductivity is closely related to the comfort of human body.Firstly,fabric structure parameters were obtained by means of fabric thickness meter and ultra-depth-of-field microscope.And three-dimensional geometric model of weft-flat knitted fabric was established by inserting cubic B-spline curve.Then,the element loop model was imported into the finite element analysis software STAR-CCM+.The numerical calculation was carried out by mesh division,boundary setting,and iterative calculation steps.Compared with the experimental data,the error was less than 4%.It is shown that this method is practical and can be used to predict the thermal conductivity of weft knitted fabrics.

关 键 词：纬编针织物 导热性能 三维模型 有限元仿真 网格划分 

分 类 号：TS186.2[轻工技术与工程—纺织材料与纺织品设计]