State-of-the-art Shock Absorber

What applications can POLARIS shock absorber be used for?

Shock absorption and overload protection. Especially well suited for pile run protection during hammering of piles into the seabed.

How does POLARIS shock absorber work?

POLARIS shock absorber combines a hydraulic cylinder with a gas accumulator. The gas accumulator provides the spring effect while the oil flow is precisely controlled to provide damping.

The below simplified Excel simulator (requires Office 365) can be used to get a basic understanding. Contact us at post@nodynamics.com to get access to the full simulator.

Precharge HP refers to the minimum force required to start stroking and should be in the range 50-120% of mass. Precharge valve refers to the force required for the main valve to start opening and should be set to match your desired DAF level.

Notes!

• Only to be used for concept illustration.

• The full model is far more realistic.

• Ignores crane reeving and mass.

• Ignores vessel motion.

• Ignores friction.

• Ideal gas law.

• Simplified valve model.

• Lack of limiters (stroke, pressure, force).

How much does it cost?

Please contact us for a quote, in general much less expensive than competing solutions.

What range do you offer?

POLARIS shock absorber has standard SWL designs of 75t to 4000t. The standard stroke length is 1m to 8m.

Where can I get more information?

You can reach us by calling +47 9664 7886 or by contacting us at post@nodynamics.com. Also check out the datasheet below.

What are the technical benefits of POLARIS shock absorber versus other shock absorber units?

• Much lower weight (~70% reduction)!

• Much more compact, only a single cylinder required, no external accumulators, even on the largest SWL!

• Much more efficient (~50% increase)!

• Much faster to adjust (~80% faster)!

• Designed and approved according to DNV ST-0378 and DNV RP-N202.