COMPLEX MODAL-ANALYSIS OF A FLAT BELT PULLEY SYSTEM WITH BELT DAMPINGAND COULOMB-DAMPED TENSIONER

The effects of damping on rotational vibratory solutions of a multiple pulley-flat viscoelastomeric belt system with rotary arm tensioner is developed. A complex model procedure is developed to solve both under damped and overdamped cases. This complex modal procedure allows for f uture extension to include nonsymmetric rotational models, such as tra nsverse belt vibration coupling. The modal solution enables rapid anal ysis over a spectrum of frequencies. Seven pulley system experimental results reported in the literature support the analytical development. Belt damping has significant vibration and belt tension amplitude eff ects. Tensioner spring rate and coulomb damping has minor effects.