你看看你的坐标轴与你的图形都不对应,坐标轴旋转一下就好了。红线二和三可能是二倍频和三倍频线,但要看你是如何定义它的。建议数据输出来在matlab中重新绘图会更好,可参考文献(The Physical Reason and The Analytical Condition for The Onset of Dry Whip in Rotor-to-Stator Contact Systems[J]. ASME Journal of Acoustics And Vibration, December, ,2005,127: 594-603.)