Abstract
ABSTRACTA multibody dynamics methodology for the study of roller chain drives, which includes the use of a continuous cylindrical contact model, is used here to investigate the influence of energy dissipative factors on the drive dynamics. The chain drive mechanisms are described as a planar multibody system in which the connection between each pair of links is modelled as a multiple revolute clearance joint, instead of the traditional kinematic constraint, and the meshing between the roller and sprocket teeth is also treated as a generalized revolute clearance joint. The contact force model includes the geometric contact detection and the contact force evaluation, which in turn includes energy dissipative features resulting from the friction and restitution coefficients terms used in the model. Recognizing the numerical and physical limitations of the existing cylindrical contact models, an enhanced cylindrical contact model is applied here and demonstrated with the study of the dynamics of a roller chain drive with varied initial pre-tensions and energy dissipative coefficients.
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