Modal analysis on transverse vibration ofaxially moving roller chain coupled with lumped mass

来源期刊：中南大学学报(英文版)2011年第1期

论文作者：许立新 杨玉虎 常宗瑜 刘建平

文章页码：108 - 115

Key words：roller chain; modal analysis; transverse vibration; lumped mass

Abstract: The modal characteristics of the transverse vibration of an axially moving roller chain coupled with lumped mass were analyzed. The chain system was modeled by using the multi-body dynamics theory and the governing equations were derived by means of Lagrange’s equations. The effects of the parameters, such as the axially moving velocity of the chain, the tension force, the weight of lumped mass and its time-variable assign position in chain span, on the modal characteristics of transverse vibration for roller chain were investigated. The numerical examples were given. It is found that the natural frequencies and the corresponding mode shapes of the transverse vibration for roller chain coupled with lumped mass change significantly when the variations of above parameters are considered. With the movement of the chain strand, the natural frequencies present a fluctuating phenomenon, which is different from the uniform chain. The higher the order of mode is, the greater the fluctuating magnitude and frequency are.