现代纺织技术2024，Vol.32Issue(8)：100-107,8.DOI:10.19398/j.att.202311027
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
摘要
Abstract
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 calculations to obtain the temperature distribution cloud images of the four fabric models.Finally,the knitted fabrics with different degrees of raising yarn were tested through experiments,and the simulation results with the experimental test results were compared to verify the effectiveness of the model. The research results show that the correlation coefficient between the simulated thermal resistance value and the experimental thermal resistance value of the raised yarn knitted fabric is close to 0.993,and the maximum difference is less than 17.7%,indicating that the finite element model has certain feasibility.The higher the surface hairiness density of the raised yarn knitted fabric,the greater the thermal resistance of the fabric.However,when the hairiness density reaches a certain range,the thermal resistance of the fabric changes slightly.关键词
热传递/毛羽/拉毛针织面料/有限元仿真/线圈模型Key words
heat transfer/hair/brushed knitted fabrics/finite element simulation/loop model分类
轻工纺织引用本文复制引用
刘薇,雷敏,沈华,李毓陵,马颜雪..拉毛针织面料热传递性能的有限元仿真[J].现代纺织技术,2024,32(8):100-107,8.基金项目
国家自然科学基金项目(51903034) （51903034）
中央高校基本科研业务费专项资金项目(2232022G-01) （2232022G-01）
上海松江区科技攻关揭榜挂帅项目(21SJJBGS30) （21SJJBGS30）
