近壁面柱体涡激振动的迟滞效应<sup>1)</sup>

近壁面柱体涡激振动的迟滞效应¹⁾

刘俊^*^†,高福平^*^†²⁾(

)

HYSTERESIS IN VORTEX-INDUCED VIBRATIONS OF A NEAR-WALL CYLINDER¹⁾

Liu Jun^*^†,Gao Fuping^*^†²⁾(

)

图5. 升降流速过程柱体振动幅值随约减速度变化

Fig.5. Variations of vibration amplitude with reduced velocity both showing increasing and decreasing velocities ($D =0.08$m,$m^*=1.85$,$f_{\rm n} =0.57$Hz, $\zeta = 1.10 \times 10^{ - 2}$,$K_{\rm s} =3.14 \times 10^{ - 2}$,$Re =O(10^{4})$)