Research on the theory and simulation of torsional vibration for CODAD systems

DOI

10.2991/meic-14.2014.309How to use a DOI?

Keywords

propulsion shafting; CODAD; torsional vibration; simulation; discrete model

Abstract

Two machines driving one propeller, especially CODAD (Combined Diesel and Diesel) has been widely used in marine propulsion shafting for power performance and fuel economy, but there were few researches about the device for shaft vibration. In this paper, based on the independent design multi-functional test bench of the marine power plant, the torsional vibration calculation method of the test bench was established and the calculation results were gotten by the theory analysis. Then the corresponding system simulation model was set up on the basis of constructing discrete dynamics model of the two diesel engines with different cylinders, and response curves of the shaft under the different rotational speed were obtained. The resonant frequency of the shaft system was estimated through Fast Fourier Transform Algorithm (FFT), and the simulation result has better consistency with the theoretical value, which proved that the natural frequency in complex shafting could be obtained by the simulation method.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiang Xu
AU  - Keke Chen
PY  - 2014/11
DA  - 2014/11
TI  - Research on the theory and simulation of torsional vibration for CODAD systems
BT  - Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 1370
EP  - 1373
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-14.2014.309
DO  - 10.2991/meic-14.2014.309
ID  - Xu2014/11
ER  -