Publisher : The Korean Society of Mechanical Engineers
DOI : 10.22634/KSME-A.2000.24.5.1231
Title & Authors
Dynamics of a Rotating Cantilever Beam Near Its Critical Angular Speed Choe, Chang-Min; Yu, Hong-Hui;
Dynamics of a rotating cantilever beam near its critical angular speed is investigated in this paper. The external, force is idealized as a periodic function which has the same period as the rotati ng frequency of the beam. The equations of motion are derived and transformed into a dimensionless form. A prescribed spin-up motion is employed for the rotating motion. Numerical study shows that the steady state and the transient responses of the beam are affected by the spin-up time constant and there exists a time constant at which the maximum transient response becomes minimum.
Rotating Cantilever Beams;Critical Angular Speed;Natural Frequency Variation;Slenderness Ratio;Hub Radius Ratio;External Force Ratio;Gyroscopic Damping Effect;