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Reduction of vibration in the source of its origin:

 the replacement of the percussive processes by non-percussive;
 the static and dynamic balancing;
 the replacement of metallic details by plastics with the significant
internal friction;

 an application of the resilient insertions and gaskets in the connections;
 the greasing of the connecting and passing machine knots.

Vibration damper is a reduction of the vibration level of the protected object
by converting the energy of mechanical vibrations of this system, fluctuates in other
types of energy (Figure 12.2).

Figure 12.2 – Vibration damper

Increasing energy losses in the system can be by:
1) using vibration absorbents with the significant internal friction (plastics, soft
rubbers, mastics, thick felt);
2) using materials with greater internal friction allows lowering vibration in the
range of mean and high frequencies between 8–10 dB.

Vibration extinction is the reduction of vibration level of machines and
aggregates by placing it onto the vibration isolation bases.
Vibration isolation is the process of isolating an object, such as a piece of
equipment, from the source of vibrations (rubber, spring and combined).
1) Vibration isolation between the stationary equipment and the foundation by
means of rubber gaskets, springs, rubber and metal shock absorbers (Figure 12.3).
Spring insulators in comparison with rubber have a number of advantages: they
can be used for isolation of both low and high frequencies; they retain the constancy
of elastic properties in time longer, resist the effects of oils and heat, relatively small.
But they can skip high frequency vibrations, as the spring material (steel) has small
internal losses. Therefore, in this case it is recommended to install spring vibration

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