Structural response
Long Base Strain Gauge, courtesy BES Long Base Strain Gauge, courtesy BES
General Information
In ship design the structural response is very important, as the structural integrity is one of the end products of the ship design. A distinction can be made between static structural response (e.g. hogging & sagging) and dynamic structural response (e.g. whipping and springing). The overall structural response during operation of time the vessel results in fatigue damage. The accumulated fatigue damage ultimately determines the life cycle of the vessel.

Service & Activities
At the Seakeeping Department the structural response of vessels is investigated by means of seakeeping model tests. These model tests are in general performed in the Seakeeping and Manoeuvring Basin.

The Trials & Monitoring department is specialised in full scale measurements and evaluation of structural response on board of ships.

Facilities & Tools
Structural response model tests are performed in the following MARIN facilities:

To measure and analyse structural response on board of ships, MARIN uses the following:

  • Strain gauges for stress measurements
  • Long bases strain gauges for measurements of ship deformation
  • Accelerometers
  • Pressure transducers
  • Natural input mode analysis software
The following tools are used to study structural response numerically:

  • ANSYS
  • FEM tools
Software Sales
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.

Experience Record
The list below gives a review of structural response projects carried out at MARIN:

  • Cooperative Research Ships (CRS)
  • Heavy Lift Vessel (Heerema) 2009
  • Girassol Buoy (Total) 2004-2008
  • Victoriaborg full scale structural loads monitoring (2004)
Most recent papers on structural response presented by MARIN
(complete overview of articles can be found under Publications)

Most recent articles on structural response written for MARIN Report
(complete overview of articles can be found under Publications)

Contact
For more information on how MARIN can assist your organisation with structural response issues, please contact MARIN's Trials & Monitoring department

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