Ship noise & vibration consultancy 



      Noise prediction

      Noise reduction

      Vibration analysis

      Measurement surveys


More info

About ScanVibra




Vibration analysis
ScanVibra performs vibration review, analysis, calculations and predictions for wide range of vessel types. The vibration analysis of newbuildings serves to avoid problems in terms of comfort on board, as well as damage to structure or equipment.
The risk of excessive vibration is strongly related to resonance problems. Thus, a main focus in vibration analysis is to ensure that no critical hull structure natural frequencies coincide with the most important excitation frequencies.
For calculations, the Finite Element (FE) method is applied, using models comprising all relevant structures: Decks, bulkheads, shell, girders, beams and pillars. Local and global calculation models can be used: It is always required to perform local calculations of e.g. deck structures in order to avoid resonance problems. These local calculations are usually based on 2-dimensional FE models.
Depending on the vessel characteristics and the strictness of the vibration requirements, it can be decided to perform also global 3-dimensional FE calculations. In addition to natural frequency analysis, the global calculations allow for prediction of the vibration levels induced for example by the propellers.
The FE calculation method is well suited for the simulation of various vibration reducing measures - such as reduced propeller pressure pulsations, stiffening proposals etc.

Key services

Noise & vibration analysis
Design reviews
Measurement services

Trouble shooting




Passenger ships
Luxury yachts
Container ships, tankers
Offshore support, DP etc. - - +45 70 20 17 89 - Contact Ulrik M. Rasmussen