Abstract The modal characteristics and stability of the slender body which can be subjected to follower thrust were compared and analyzed. It was shown that the axial component of follower thrust which was conservative would weaken the axial stiffness of the slender body. The critical value of dynamic instability of the slender body under the non-conservative transverse component was higher than its value of static buckling. At the critical point, the 1st and 2nd frequencies of the slender body remained the same. This indicates that the stiffness of different modes couples together under follower thrust. Therefore, the transverse component of thrust should be considered for the slender body, especially with obvious bending vibration.
2023, Vol. 6 
