A-frame crane calculations

Norwegian Deck Machinery develops and supplies equipment for ships and offshore installations worldwide. To get the new 30 ton A-frame crane DNV certified, Inventas Femlab has performed calculations verifying the design in terms of fatigue and worst-case load.

The A-frame will be used for handling plows for subsea pipelines, which causes demandingrequirements for the equipment. Even the calculated model was complex and analytical work was challenging, a fine mesh model that could be used to simulate the strain and fatigue in various configurations was created.

The calculations performed confirmed that the A-frame can withstand the stresses according to the current standards. The A-frame design was approved by DNV.