基于变截面复丝模型的机织物模拟  

Woven fabric simulation based on variable section multifilament model

作　　者：徐辉 朱昊[1,2] 潘苏情 史红艳 应迪[1] XU Hui;ZHU Hao;PAN Suqing;SHI Hongyan;YING Di(College of Textile and Garment,Shaoxing University,Shaoxing,Zhejiang 312000,China;Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province,Shaoxing,Zhejiang 312000,China)

机构地区：[1]绍兴文理学院纺织服装学院,浙江绍兴312000 [2]浙江省清洁染整技术研究重点实验室,浙江绍兴312000

出　　处：《纺织学报》2024年第5期70-78,共9页Journal of Textile Research

基　　金：绍兴文理学院学生科研项目(Y20220707)。

摘　　要：为解决机织物模拟时因纱线截面不变而导致纱线互相渗透、模拟效果失真等问题,提出一种变截面复丝模型作为机织物模拟时经纬纱的模型。从空间圆参数方程中受到启发,建立空间椭圆参数方程作为纱线的截面模型;提出一种椭圆等分算法,通过等分弧长的方式建立了复丝模型。从受力分析的角度分析纱线中心线上不同位置截面的受挤压程度,建立了平纹及非平纹组织的交织模型,并以压扁系数表示不同截面的压扁状态。研究结果表明:变截面椭圆与复丝相结合构成的经纬纱模型模拟效果逼真;交织模型在减少纱线渗透的同时,也更符合实际情况;模拟的机织物表层纹理清晰,达到了预期效果。Objective In order to improve the simulation effect and accuracy of woven fabric simulation and solve the problem of yarn interpenetration during weaving due to the constant yarn cross section,a variable cross-section multifilament model is proposed as the model of warp and weft yarns during woven fabric simulation.Method Inspired by the spatial circular parameter equation,the spatial elliptical parameter equation is established as the yarn cross-section model.An ellipse bisection algorithm is proposed,and the multifilament model is established by bisecting the arc length.From the point of view of force analysis,the compression degree of cross sections at different positions on the yarn centerline is analyzed,and the interweaving model of plain and non-plain weave is established,and the flattening state of different cross sections is expressed by flattening coefficient.Results It is considered that the cross section of the yarn in the process of warp and weft interweaving is elliptical,and the spatial elliptical parameter equations are derived through rotation transformation and translation transformation.Different from the previous practice that the space curve cylinder is regarded as a yarn model,the proposed multifilament model represents the yarn from the fiber level,and the proposed ellipse circumference bisection algorithm simulates the visual effect of monofilaments arranged on the multifilament surface.When simulating the twisting effect of multifilament,the ellipse circumference bisection algorithm is modified,and the parameters of twist angle are added to simulate the multifilament effect diagrams with different twist angles.From the mechanical point of view,the buckling degree of warp and weft yarns and the degree of extrusion deformation at different positions are deduced,and the woven fabric interweaving model is established by geometric means.The model analyzes the flattened shape of the yarn at the interweaving point and the middle section of the adjacent interweaving point.After calculating the fl

关 键 词：空间椭圆 变截面复丝模型 交织模型 机织物模拟 经纬纱模型 

分 类 号：TS101.1[轻工技术与工程—纺织工程]