Influencing Factors Analysis On The Dynamics Of Intermittent Transmission Chain System

In this study, an integrated model describing the complex dynamics of the roller chain drive including moving sprockets is proposed. The methods of modeling and vibration control on the intermittent transmission chain are analyzed and studied in this dissertation.The kinematics and dynamics analysis of the intermittent roller chain system is presented firstly. The study on the associated impact between rollers and sprockets and dynamic loading in the system is carried out with different motion laws.0 Based on investigation on the dynamic behavior of intermittent transmission chain, the model is constructed, which consider the vibration of drive sprocket's torsion and driven sprocket's crankle. The corresponding differential equation is set up and solved through Semi-implicit Runge-Kutta Method. The dynamic performance of the system is analyzed when the chain runs with various motion curves.The effect to the vibration of components of intermittent transmission chain is non-linear, which is caused by the stiffness change of drive sprocket's torsion and driven sprocket's crankle. Bring forward the method that reduces vibration of transmission chain through variable stiffness of the driven sprocket's crankle. Based on calculations with analysis on the sample of the intermittent chain drive, the dynamic performance of the system is analyzed when the spring's stiffness is handled by different functions.The relative velocity at the contact point between the sprocket and chain is discussed in the thesis when there is a pseudo-penetration of a roller in a tooth profile because of the wear of the chain system or because the links are not rigid and elongate as a result of the dynamic loading.