Linear Density Dynamics of Yarn in Friction Yarn Formation Process
To improve the production efficiency and yarn quality the dynamic characteristics of the friction yarn formation process a dynamic model describing the behavior of the process variables and the analysis of the process characteristics are inevitably required. This study is performed on the dynamic distribution of the cross-sectional area of the in-process bundle in the yarn formation zone and the dynamic change of the output yarn thickness based on a mathematical model. Simulation results by FDM, applying Forward Time Backward Space Grid showed that dynamic behaviors of yarn thickness was similar to that of a Is-order-system for the step change of the input rate of the fiber fleece. Frequency response analysis showed that there could be a process resonance, where a specific range of the fluctuation in the input fleece thickness resulted in the yarn thickness change more amplified than the nearby frequency zone, depending on the yarn delivery speed.
Friction spinning Dynamic model In-process bundle The cross-sectional area Input fleece thickness Step response Frequency response Process resonance
You Huh Beata Lehmann Jong S. Kim
Department of Mech. and Ind. Systems Eng. , Kyunghee University,Yongin, 449-701, Korea Department of Mechanical Engineering, TU-Dresden, Dresden, 01062, Germany Department of Textile Engineering, Kyunghee University, Yongin, 449-701, Korea
国际会议
杭州
英文
26-34
2006-08-22（万方平台首次上网日期，不代表论文的发表时间）