Shock Mount Selection

Barum and Dewar have a long history of supplying large protective transit cases suitable for road, sea and air transport. Many of these have shock mounted interiors to protect the contents from the rigors of shipping.

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Shock Mount Selection

Wire Shock Mounts

Where specifications call up for a shock and vibration protection or equipment is known to be fragile, Barum and Dewar are able to offer wire shock mounts. Mounts provide a high level of combined shock and vibration isolation over a wide range of temperatures and are a durable long term damping solution.

The mounts are made up of stranded cables formed into a loops which provide the spring function. Materials can be chosen to provide chemical and corrosion resistance.


Inputs and Attenuation

Barum and Dewar can propose standards for inputs or can work with client requirements. These inputs together with target attenuation levels are used to recommend wire shock mounts. Selections are supported with single degree of freedom calculations and are presented for review.

Calculations together with interface details are the starting point for sizing a protective transit case. Sway space for the equipment to move must be added to the contents envelope and allow the mounts to perform as intended.


Detail Design

Once the initial selection has been made the container design is worked up in Barum and Dewar’s 3D CAD software.

Interface plates or cradles are modelled, bespoke brackets setting mounts at an angle to optimise performance can be designed if required. At this stage a review of sprung masses, centre of gravity and interfaces is carried out and the shock mount selection finalised.

If required, a full analysis can be carried out, this can be used to further verify selection and if applicable used in place of testing.


Testing

Barum and Dewar can facilitate shock testing and have done so in the past for clients.

Furthermore testing at approved test houses can be arranged but may be limited by the size of the container. If a container is too large full analysis can be employed to provide mount performance verification as required.


Variety

Shock mounting equipment is not limited to large hardware, Barum and Dewar have supplied protective transit cases for small items where the project requires shock and vibration protection.

In these instances the adaptation of commercially available off the shelf cases can provide an effective solution.