IJRME – Volume 1 Issue 4 Paper 5


Author’s Name :  Ummidi Gopi | Dr Naveen Kumar

Volume 01 Issue 04  Year 2014  ISSN No:  2349-3860  Page no: 15-17



In this paper, Vibrations is a molecular phenomenon. Vibration plays an important role in machines and structures by improving performance & stability, reducing noise and increasing lifetime. At the same time vibrations of structures is major problem. Vibrations us everywhere and in most cases these vibrations are undesirable. they can lead to excessive wear. Vibration may results in the failure of machines or there critical components. Therefore vibration control is very important. passive vibration control refers to minimizing vibrations by the use of dampers, absorbers, stiffness, structural modification. Generally lead to viscos-elastic material to control vibrations simple, reliable and highly effective. Several polymers exhibit the viscoelastic properties of naturally dissipating vibratory energy into heat energy. This is way they are largely used in aerospace, aeronautical, automobile, civil structures, machine design  industries to provide passive vibration damping. In this experiment, experimental model testing of L-shaped beam made of aluminum has been performed of obtain the mode shape & frequencies by using an analysis software. So the points of max strain energy have been observed using the software. Then later the viscoelastic material is applied to the points of max strain to reduce the vibrations passively.

Key Words:

Passive vibrations; Visco-Elastic material; Control


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