Implementing Simulationx in the Modelling of Marine Shafting Steady State Torsional Vibrations
Autor: | Branko Lalić, Karlo Bratić, Ladislav Stazić, Nenad Vulić |
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Rok vydání: | 2021 |
Předmět: |
Computer science
Naval architecture. Shipbuilding. Marine engineering VM1-989 020101 civil engineering Ocean Engineering 02 engineering and technology Shipyard Propulsion Diesel engine normal firing 01 natural sciences mechanical dynamic system critical speeds torsional stress amplitudes two-stroke marine Diesel engine normal firing critical speeds 010305 fluids & plasmas 0201 civil engineering Software 0103 physical sciences two-stroke marine diesel engine torsional stress amplitudes business.industry Mechanical Engineering Naval architecture Vibration Marine propulsion mechanical dynamic system business Marine engineering Verification and validation |
Zdroj: | Polish Maritime Research, Vol 28, Iss 2, Pp 63-71 (2021) |
ISSN: | 2083-7429 |
Popis: | Marine propulsion shafting systems are exposed to torsional vibrations originating from excitations in their prime movers and propellers. It is essential to analyse their steady state response in the earliest stage of ship design. The paper describes the implementation of SimulationX software based upon simulation modelling for these calculations. This software can be used either by the design office of the shipyard or by the classification society for verification within the plan approval phase. Some specifics of the input data preparation are briefly discussed. In addition, the simulation results depend on the modelling approach chosen. For these reasons, the real two-stroke Diesel engine ship propulsion system was chosen and several different models were implemented for system modelling. SimulationX calculation results are compared with those of two well-known and field-proven programs that use an analytical approach. Finally, the results are compared with the measurements performed on the actual newly built ship. Discussion reviews the selected SimulationX model, and its verification and validation in the case of engine cylinders with normal ignition. |
Databáze: | OpenAIRE |
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