Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Calculation method of bearing wear allowance based on vibration characteristics of marine shafting
| DOI: | 10.11809/bqzbgcxb2023.10.007 |
| Keywords: | ship shafting; elastic long support; vibration calculation; shafting parameters; impact assessment; allowable wear value |
| Abstract: | In order to increase the ship maintenance interval, reduce the cost of shafting maintenance, and effectively predict the allowable wear value of ship shafting bearings, this paper establishes a shafting vibration calculation method considering the uneven wear of shafting bearing surface. Through this method, the influence of the length, stiffness and wear of ship shafting bearings on the natural frequency of ship shafting is studied. Based on the above vibration calculation theory, a calculation method of bearing wear allowance is established. The allowable wear value of shafting bearing is calculated for the real ship. The results show that the calculation method established in this paper can effectively predict the maximum allowable wear of shafting bearings; The natural frequency of shafting vibration decreases with the decrease of bearing stiffness coefficient, the decrease of bearing length and the increase of wear; Considering the attached water mass of the propeller, the natural frequency of the ship shafting will be reduced by about 8%~10%. |
| Issue: | Vol. 44 No. 10 (2023) |
| Published: | 2023-10-28 |
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