On the Critical Speed, Supercritical Bifurcation, and Stability Problems of Certain Type of High-Speed Rail Vehicle

Table 1

Eigenvalues for = 30 MN/m.

Nat. damping	Frequency (Hz)
1	0.2325
1	0.7672
0.0285	1.0079
0.0606	1.8823
0.0561	1.9632
0.0404	2.0079
0.0731	2.3198
0.9899	2.5590
0.9831	3.3193
0.3636	3.4589
0.4235	3.9598
−0.0043	7.0055
−0.0086	7.0253
0.7082	9.3246
0.7076	9.3303