纱线捻度对针织面料服用性能的影响分析

实验以纬平针组织为研究对象,采用24tex纯棉纱线为原料,科学地选取具有一定代表性的纱线捻度值进行加捻实验,通过KH-868／KR-838型针织横机编织形成相应织物。对由不同纱线捻度值形成的针织物进行服用性能测试,包括透气性、悬垂性、起毛起球性、拉伸断裂性能,以分析不同的纱线捻度对针织面料服用舒适性能产生的重要影响。实验得出,对于S捻的24tex纯棉并捻纱线,纱线捻度值在4r／10cm时,织物的力学性能、透气性、柔软性和悬垂性等均达到较理想水平。     

凉爽棉针织产品开发初探

对强捻棉纱的可编性及产品的服用性能进行了探讨。强捻棉针织产品所表现出的服用性能体现出它具有凉爽特点。     

基于均匀化理论的针织物拉伸形变有限元模拟

针对针织物形变规律问题,以纬平针织物为研究对象,通过均匀化理论建立宏细观线弹性数学模型,确定针织物的周期性边界条件及载荷边界条件,采用数值模拟方法对织物等效弹性刚度求解,并结合有限元方法计算两种纬平针织物在双向拉伸下的应力应变响应值。与试验数据相比,当织物拉伸的应变小于5%时,基于均匀化理论的方法可准确模拟形变的应力应变关系,而当应变超过15%时,该模拟方法存在一定误差,但误差均可控制在9.7%之内。     

纬编针织物在计算机中的三维仿真

为真实模拟纬编针织物的结构,通过分析纬编针织物的物理模型,在三维Pierce线圈模型基础上,引入B样条及椭圆描述线圈,从而建立三维几何线圈模型.根据纱线线圈的中心线走向,将线圈分为两个部分:弧段和圈柱,弧段(如针编弧、沉降弧)用椭圆描述,圈柱用三次B样条曲线模拟.最后利用OpenGL结合VC++模拟针织物的结构,并实现光照效果.试验结果表明:采用该模型及实现方法,模拟效果比单独采用三维Pierce模型、B样条模型更加逼真.     

Web-Based Interactive Simulation of Weft Knitted Fabric

In order to realize parametric simulation of three- dimensional (3D) fabric structure based on web,a 3D model describing a plain knitted fabric,in which the cross- section of the yarn is circular shape and the path of the yarn is cubic B-spline curve,is proposed in this paper. With this model,the 3D simulation of the loop and of the basic structures of the knitted fabrc is realized by using Virtual Reality Modeling Language (VRML). The virtual simulation scene is suitable for network transmission with freely available VRML browsers and can be translated,scaled and rotated quite arbitrarily. By using Java and External Authoring Interface (EAI) technology,the web- based interactive simulation platform of weft knitted fabric is established. The user can input type of structures,basic fabric parameters,and yarn colors interactively to obtain a more realistic simulation result in real-time. A new approach is provided to imitate the knitted fabric 3D appearance on network.     

Study on How to Design Knitted Fabric Pattern with Mathematical Theory

To improve design capabilities for the knitted fabric pattern, a preliminary study is carried out for the design method. Based on mathematical theory, pattern could be created automatically by computer with inputting different parameters for mathematical functions. The knitted fabric simulation is realized by Ml CAD pattern preparation system of STOLL Company. In the pattern,different color unit is replaced by obverse stitch with different color, or by obverse stitch and reverse stitch with the same color separately, after that the effects of knitted fabrics could be simulated. Designing with this method, it would not only help to acquire a great of diversity patterns,but also improve design efficiency and save cost.     

小口径圆筒形纬平针织物线圈形态的几何分析

小口径圆筒形纬平针织物作为人工气管、血管外支架等医用支架在医疗领域得到了应用,而支架的表面几何形态及其孔隙率是临床使用中考虑的一个重要因素.将小口径圆筒形纬平针织物的一个线圈分为8个部分,对其线圈形态进行分析,给出了线圈横向和纵向变形达到极限时的几何特征,推导了表面孔隙率的计算公式.并针对一个给定的小口径圆筒形纬平针织物进行了计算,得出了各几何参数之间的关系.     

基于几何模型的纬编提花织物结构计算机辅助设计

通过对构成纬编提花针织物的基本线圈单元进行几何结构分析,建立几何模型,开发了一套纬编提花针织物计算机辅助设计系统。利用该系统,通过输入花型信息及圈高、圈宽、纱线直径等参数,不仅能以图形方式直观地显示针织物的线圈结构形态,还能计算线圈长度等织物结构参数。     

热环境中针织面料穿着舒适性影响因素的研究

从人体穿着舒适的要求出发,对热环境中针织面料的穿着舒适性进行了研究,找出影响针织面料舒适性的某些织物结构参数,为功能性织物设计、生产及服装选料提供一定的参考.     

Research on the Dyeing Properties of Silk-like Knitted Fabric of Ultrafine Polyester Fiber

In this paper, dyeing processes of silk-like fabric of ultra-fine polyester fiber are studied through orthogonal experiment, dyeing properties （K/S value, L^＊ value, and C^＊ value） of the fabric are tested under different dyeing conditions （pH value, time, and bath ratlo）, and optimum dyeing conditions are arrived at through analysis.     

棉盖涤导湿针织面料的开发

导湿干爽面料是一种新型功能面料，能使人体的汗液导出并保持皮肤的干爽。本文就面料的开发提出一些思路，并对开发的面料的相关性能进行测试。通过对比分析认为棉盖涤面料经亲水性整理具有良好的导湿干爽功能。     

陶瓷纤维复合针织面料的研究

就陶瓷纤维混纺应用于针织面料的开发作了探讨,通过面料性能的测试,认为该面料具有较好的保暖保健功效。     

纱线和针织物导湿结构模型和应用研究

建立了纱线和针织物导湿结构模型，并用于优化差动毛细效应织物设计。     

接触电阻对导电纬平针织物柔性传感器的电-力学性能影响

采用Popper和Kawabata的针织物力学模型计算纬平针织物线圈中交叠纱线间的接触力,为了简化计算过程,采用两个弯曲的纱线相互钩套来模拟导电纬平针织物线圈中相互交叠的纱线,导电纱线间接触电阻和接触力的关系可用经验幂函数求得.由理论分析和试验研究可得:导电纬平针织物线圈中交叠纱线之间的接触电阻随接触力的增加呈幂函数减小;由接触电阻引起的电阻变化是影响导电纬平针织柔性传感器灵敏度的关键因素;导电纬平针织物电阻随应变的增加而线性减小.     

条件平衡处理对针织物尺寸稳定性的影响分析

介绍了针织物的结构特征、编织工艺、性能特点和针织物的变形机理等内容,根据针织物尺寸稳定性影响因素确定条件平衡处理的实验方案,选取棉和羊毛两种纱线为原料,用针织横机编织,随后进行条件平衡处理,通过多次洗涤后的尺寸变化分析条件平衡处理对针织物尺寸稳定性能的影响。     

经编针织运动服装的织物性能研究

从人体穿着舒适性能考虑,织物的热湿舒适性越来越成为人们重视的服用性能.本文针对功能性的针织运动服的原料选用和织物组织结构,分析其导湿性.     

针织物沿织层方向拉伸时的不屈曲性

针织物在受到拉伸时通常会屈曲，但当受到沿织层向拉伸时不发生屈曲，基于针织物的细观本构模型，给出了该不屈曲性的严格证明，证明中考虑了针织物在临界状态的大变形，使用了严格的三维不稳定性理论以避免薄板理论近似可能引起的偏差．针织物片被看作三维物体，其所有的边界条件皆被满足．研究证明，两种可能的屈曲模态（弯曲模态和桶形模态，即针织物受非织层方向拉仲时的可能屈曲模态）对受织层方向拉伸的针织物都不会发生．     

The Mechanical Behaviour of Rubber Hose Reinforced with Warp Knitted Fabric

IntroductionBendable pipe is an indispensable non-metallic part ofautomobiles , which is used to transport cooling liquid,hotair and oil media . Auto radiator hose is a bendable rubberhose connecting the water tank ,radiator and engine ,andit is used to transport cooling liquid . Smooth surface ,easy assemblage , high inside pressure bearing capacity ,low radial direction expansion ratio are required. As far asthe mech-anical perfor mance of auto radiator hose isconcerned , ISO4081requires t…     

三维成形针织间隔结构材料的编织研究

以半球体为例，通过在电脑横机上编织三维成形针织物的研究，分析和探讨了影响编织可靠性和产品结构与性能的因素，并提出了相应的工艺优化方法。     

Tensile Properties of Weft Knitted Fabric Reinforced Composites

Seven kinds of weft knitted fabrics from glass fiber yarns were used as reinforcement to make fabric/epoxy composite laminates. Tensile tests were carried out to examine and compare the mechanical properties in course and wale direction of these composites. On the basis of experimental results, attempts have been made to analyze some main factors influencing stress-strain curve, ultimate tensile strength and initial elastic modulus of specimens.