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Vibration analysis of warp yarns of high speed loom

Published:2015-04-07 author:CHEN Fei，LIU Yi-sheng，CHEN Yi-bing Browse: 2516 Check PDF documents

Vibration analysis of warp yarns of high speed loom

CHEN Fei，LIU Yi-sheng，CHEN Yi-bing

（Faculty of Mechanical Engineering & Automation，Zhejiang Sci-tech University，Hangzhou 310018，China）

Abstract：Aiming at the problems of the weaving performance of loom affected by the vibration，the coupling vibration of warp yarns in

lengthwise and crosswise were researched in the process of the weaving of high speed loom，the dynamics model of the coupling vibration

of warp yarns in lengthwise and crosswise was established，the fluctuation process of warp yarn was analyzed by the nonlinear vibration

method and elastic mechanics. Kelvin model was selected as warp viscoelastic constitutive relations. A differential equation of the warp

yarn vibration in lengthwise and crosswise was established by Newton law. And the variables of time and space were separated by using

Galerkin truncation method.The complex partial differential equations were converted into ordinary differential equations. The vibration

characteristic of warp yarns in lengthwise and crosswise were analyzed by 4-order Runge-Kutta method and Matlab. The vibration of

warp was affected by the parameters of warp. The results indicate that transverse vibration of warp is hardly affected by longitudinal

vibration for small amplitude coupling vibration of warp in the process of the weaving of high speed loom. The vibration frequency of warp

is effectively reduced by changing the corresponding parameters of the warp，and broken yarn is effectively prevented，the theoretical basis

is provided for effective vibration control of warp yarns.

Key words：high speed loom；coupling；warp yarn；vibration；simulation

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