Vibration Characteristics and Power Flow Analyses of a Ship Propulsion Shafting System with General Support and Thrust Loading

Table 6

The first ten natural frequencies of original model under various elastic boundary restraints at the right end.

Mode order	Various elastic boundary restraints (N/m)
	10^2	10^4	10^6	10^8	10^10
1	15.341	15.341	15.354	15.379	15.380
2	16.705	16.706	17.327	36.637	38.469
3	39.434	39.438	39.460	48.583	60.023
4	60.083	60.086	60.079	60.159	94.699
5	92.185	92.184	92.224	94.175	122.644
6	110.754	110.786	110.880	120.903	156.495
7	152.497	152.487	152.515	155.325	223.717
8	217.997	218.004	218.042	221.557	291.042
9	285.106	285.105	285.151	289.102	368.156
10	365.7735	365.7764	365.8292	370.8595	446.9831