Analytical approach to suppress the vibration of spur gear pair using particle damping technique

Abstract

Vibration and noise have annihilated effect on the mechanical systems. These two are main adverse parameters leading to many undesirable effects lead to fatigue and failure of the machine decreased reliability, energy losses and degraded performance. Vibration damping is reactive vibration control method. Passive and active damping techniques are used to reduce the resonant vibrations. Theory of energy dissipation mechanism is followed by particle damping and is one of the passive vibration control technology. Particle damping, an impact mass is attached contains number of particles. The dissipation of loss of vibrational energy will occur due to impact, friction and change of energy. Damping is an effect of reducing, preventing its oscillations. Particle impact dampers are used to decrease the undesirable vibration in automobile industries, robots aerospace industries, gear box, etc. like engineering applications. This paper focused on the particle damping technology to reduce the vibrations generated in transmission spur gear. The model is developed which have cavity or holes in which particle dampers are present; it decide the relation between friction coefficient of the particles at constant rotational speed, various particle size. In present research damping particle of different sizes are selected to study the effect on damping using modal analysis. We found that, at the low or minimum speed, small and edgeless particles have good damping impact and at fast speed, more unpleasant and irregular particles are even better. It is observed that, the particle size and damping effect are directly proportional. This reduces the noise and harshness in system and ultimately improves the quality performance and life of the gearbox.