VIBRATION CONTROL OF BEAM WITH ACTIVE CONSTRAINED LAYER DAMPING

Abstract

Vibration problems have received much attention in recent years. Passive methods, such as sound absorbing
but in low frequent noise problems these passive methods may lead to an unacceptable increase of weight and volume
materials give good results in reducing many vibration problems. In the present study the effect of Active Constrained
Layer on the vibration control of beam treated fully cover with Active Constrained Layer. Passive constrained layer
damping (PCLD) treatments are applied to reduce vibrations of structures due to their reliability and simplicity, but the
drawback of PCLD treatments is that once installed, the damping cannot be adjusted. Active constrained layer damping
(ACLD) treatment, In which a piezoelectric (PZT) layer is used to replaced the constrained layer of PCLD treatment,
thereby integrating the advantages of both. The piezo patch increases the shear strain in the viscoelastic layer which
increases the energy dissipation. So we adopt the active constrained layer damping for a smart, fail-safe and better
vibration control.