拉毛针织面料热传递性能的有限元仿真  

Finite element simulation of heat transfer properties of brushed knitted fabrics

作　　者：刘薇 雷敏[1] 沈华[2] 李毓陵[2] 马颜雪 LIU Wei;LEI Min;SHEN Hua;LI Yuling;MA Yanxue(College of Textiles,Ministry of Education,Donghua University,Shanghai 201600,China;Key Laboratory of Textile Science&Technology,Ministry of Education,Donghua University,Shanghai 201600,China)

机构地区：[1]东华大学,纺织学院,上海201600 [2]东华大学,纺织面料技术教育部重点实验室,上海201600

出　　处：《现代纺织技术》2024年第8期100-107,共8页Advanced Textile Technology

基　　金：国家自然科学基金项目(51903034);中央高校基本科研业务费专项资金项目(2232022G-01);上海松江区科技攻关揭榜挂帅项目(21SJJBGS30)。

摘　　要：为探究拉毛针织面料的毛羽对面料热传递性能的影响规律,提出了一种预测拉毛针织面料热传递性能的方法,建立了针织线圈-毛羽层模型,在此基础上对拉毛针织面料的热传递性能进行有限元仿真分析,并通过实验验证模型的有效性。首先对实验面料进行测量,得到织物的几何结构参数,利用SolidWorks专业建模软件建立织物的针织线圈结构,利用ANSYS DesignModeler建立织物的毛羽层;然后借助有限元分析软件ANSYS Fluent,根据模拟环境设置边界条件,进行迭代运算,得到该模型的温度分布云图;最后将仿真模拟的结果与实验测试结果进行对比,对模型的有效性进行验证。研究结果表明:拉毛针织面料的模拟热阻值与实验热阻值相关系数接近0.993,最大差异小于17.7%,表明该有限元模型具有一定的可行性;拉毛针织面料的表面毛羽密度越高,织物的热阻值越大,但是毛羽密度达到一定范围后,织物热阻值发生较小变化。The surface hairiness of raised yarn knitted fabrics can not only affect the appearance style and fashion sense of the fabric,but also affect the heat transfer performance of the fabric.Therefore,relevant fabric manufacturers have designed and developed knitted fabrics with different degrees of raising yarn to meet the different fashion and functional needs of consumers.However,there is currently a lack of sufficient theoretical basis to elaborate on the relationship between hairiness and the heat transfer performance of raised yarn knitted fabrics.At the same time,traditional experimental testing methods have the disadvantages of being time-consuming,laborious,and requiring a large number of samples,which is difficult to fully and accurately explain this relationship.Therefore,it is necessary to use new methods to study the heat transfer performance of hairiness and raised yarn knitted fabrics,so as to guide the design and development of raised yarn knitted fabrics.To explore the influence of hairiness on the heat transfer performance of raised yarn knitted fabrics,a method was proposed to predict the heat transfer performance of raised yarn knitted fabrics.A knitted loop-hairiness layer model was established,and based on this,finite element simulation analysis was carried out on the heat transfer performance of raised yarn knitted fabrics.The effectiveness of the model was verified through experimental tests.Firstly,four knitted fabrics with different degrees of raising yarn were measured to obtain the geometric structural parameters of the fabrics.In SolidWorks professional modeling software,the knitted loop structure of the fabric was established based on Pierce's two-dimensional loop model theory.On the basis of this structure,the hairiness layer of the fabric was established by using ANSYS DesignModeler.Then,the models of the four fabrics were meshed,and finite element analysis software ANSYS Fluent was used to set boundary conditions according to the simulation environment,and performed iterative calculati

关 键 词：热传递 毛羽 拉毛针织面料 有限元仿真 线圈模型 

分 类 号：TS181.8[轻工技术与工程—纺织材料与纺织品设计]