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- W2954603170 abstract "Abstract Recently, the propulsion shaft of a particular ship was fractured owing to high torsional vibration. To reduce this high torsional vibration, a coupling with low stiffness was applied. While applying this low stiffness coupling, an abnormal high torsional vibration occurred at the maximum speed of rotation of the shaft. When the speed of rotation of the shaft approached its maximum value, it operated in a stable condition and no high torsional vibration occurred initially. However, seconds later, high torsional vibration occurred suddenly. Because a rubber mount and flexible coupling were installed on the main engine, the root cause of this high torsional vibration could be attributed to the lateral-torsional coupled vibration of the shaft system. The lateral-torsional coupled vibration was investigated numerically after approximating the shaft system to a three-degrees-of-freedom Jeffcott rotor. To verify that the high torsional vibration is caused by the lateral-torsional coupled vibration, a test unit that can simulate this lateral-torsional coupled vibration occurring in the propulsion shaft is developed. Performing a vibration test with the test unit, it can be experimentally verified that the high torsional vibration occurring in the propulsion shaft of the particular ship was caused by the lateral-torsional coupled vibration. In addition, an estimation method for the speed range in which the lateral-torsional coupled vibration occurs is suggested." @default.
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- W2954603170 date "2019-10-01" @default.
- W2954603170 modified "2023-09-25" @default.
- W2954603170 title "Experimental verification for lateral-torsional coupled vibration of the propulsion shaft system in a ship" @default.
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- W2954603170 doi "https://doi.org/10.1016/j.engfailanal.2019.06.059" @default.
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