Passive vibration solutions through wire rope isolators

The vibrations can be mitigated through two processes. The first is the active vibration isolation. This process employs the use of electric power which is used for electronicPassive vibration solutions through wire rope isolators force cancellation through a number of sensors, actuators and control systems. However, most of the vibrations are dealt through passive vibration isolation. This process makes use of passive techniques like mechanical springs, elastomer pads and sheets etc. The wire rope isolators are categorised as passive vibration isolation techniques.


The passive vibration isolation is a vast subject in itself. Today, there are a number of passive vibration isolators that are used for a variety of applications. Civil engineering makes use of the passive isolation of structures from earthquakes, isolation of sensitive laboratory equipment from the ground vibrations etc. In the industrial applications the passive vibration isolators are used for pumps, motors, HVAC systems, and washing machines etc. The Andre HVAC wire rope mounts are highly effective in the mitigation of vibrations and shock.

Passive isolation working:

A passive isolation system like a wire rope mount contains mass, rope coil or spring and damping elements. The system moves as a harmonic oscillator where the coil stiffness and mass are responsible for generating the natural frequency of the system. The damping process results in the system losing energy and has a secondary effect on the natural frequency.

Understanding vibration:

Every piece of equipment on a flexible support system has its own fundamental natural frequency. When the equipment runs and generates vibration, the transfer of energy takes place most efficiently at the natural frequency. It is somewhat efficient below the natural frequency and at increasing efficiency above it. The ratio of the vibration of the isolated surface to that of the source is known as transmissibility. Vibrations can never be completely eliminated though it is possible to reduce them substantially. It is here that the Andre HVAC wire rope vibration isolators score over the competition.

The damping phenomenon:

Below the natural frequency the transmissibility ratio is around 1. It means that the vibration is passing through the system without getting amplified or reduced. The amplification happens at the resonant frequency. Damping is the process that limits the amplification. Any type of mechanical system in this world is likely to contain some amount of damping. It dissipates energy in the system, leading to a reduction in the vibration level and its transmission at the natural frequency. A passive isolator like the wire rope isolator for vibration damping can be viewed as a filter for vibrations.


The wire isolator normally functions in both the directions. It insulates the equipment from the floor vibrations and also does not allow the equipment vibrations to pass to the floor. Large HVAC systems which can cause vibrations in the building or room are isolated from the floor using the Andre HVAC wire rope isolator. There are multiple sources that can generate vibration. Depending on the requirement the multitude of vibration sources can be tackled for desired results.

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