Crankshaft Optimization Based on Experimental Design and Response Surface Method

Table 3

NF and modal vibration description.

Order	NF (Hz)	Modal vibration description
1	3941.6	The balance weight of the first cylinder swings along the X-axis.
2	3942.6	The balance weight of the fourth cylinder swings along the X-axis.
3	4012.0	The balance weights of the second and third cylinders swing in the same direction along the X-axis.
4	4036.3	The balance weights of the second and third cylinders swing in the same direction along the X-axis.
5	5744.9	The balance weight of the fourth cylinder twists along the Y-axis.
6	5745.4	The balance weight of the first cylinder twists along the Y-axis.