Tech Papers

[17] Building SEA Predictive Models to Support Vibro-Acoustic Ship Design

In the past, the shipping industry has used empirical models extensively to predict vibro-acoutic responses aboard ships. This method has proven effective for reasonable ship size, shapes and typical materials. However, empirical approaches offer little flexibility and are limited to known construction types and materials. Nowadays, ships are getter larger and use more sophisticated material such as composite. Regulation and ship owners impose more stringent vibroacoustic performance of their vessels and the luxury yacht segment is no exception. In addition, the timeframe available to design the vibro-acouctics package aboard a ship is shrinking forcing designers to seek industrially efficient methods to build ship models and perform design analysis. This paper presents an efficient method for quickly building a detailed predictive vibro-acoustic model from 2D or 3D data. This model includes all SEA structural subsystems of the hull, superstructure, interior bulkhead, etc. It also includes SEA acoustic subsystems of all cabins and other living areas. Structureborne and airborne sources are defined for all types of excitation encountered in a ship such as engine, gearbox, generator, HVAC, bow thrusters,
propeller…. Vibration, SPL and Power inputs are available at any locations of the vessel and serve as the basis for vibroacoustic design analysis.

2009 – DAGA, Rotterdam, The Netherlands
Denis Blanchet (ESI Group, Germany)
Sandor Matla (Van Cappellen Consultancy, The Nertherlands)

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